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Special operating instructions:
Wheels and tires:
Wheel and tire combinations 134
Approved wheel and tire specifications 136
Under the hood:
Washer fluids
Oil for power steering/
Level control system
Care and maintenance:
Laws and regulations:
Technical modifications to the vehicle 157
121 n
Overview
Controls and features
Operation, care and maintenance
Owner service procedures
Advanced technology
Technical data
Index
Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
122 n
Break-in procedure
To ensure that your vehicle provides maximum economy throughout a long service life, we request that you comply with the following:
Engine and differential
Up to 1,200 miles (2,000 km) :
Drive at varying engine speeds and road speeds, but do not exceed
4500 rpm and/or 105 mph (170 km/h) during this initial period. Comply with the legal speed limit at all times.
Refrain from using full throttle and avoid pressing the accelerator beyond the kickdown point.
Once 1,200 miles (2,000 km) have elapsed, engine speeds and road speeds can gradually be increased.
You should also comply with these break-in procedures if the engine or differential is replaced later in the course of the vehicle service life.
When the vehicle is operated on wet or slushy roads, a wedge of water may form between the tire and the road surface. This phenomenon is referred to as aquaplaning, or hydroplaning, and can lead to partial or complete loss of traction, vehicle control and braking effectiveness. Reduce your speed on wet roads.
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Brake system
Approximately 300 miles (500 km) must elapse before the brake pads and rotors achieve the optimal pad-surface and wear patterns required for trouble-free operation and long service life later on.
To break-in the separate parking brake drums, apply the parking brake lightly when coasting to a standstill (at a traffic signal, for instance), provided that traffic conditions allow you to do so.
To avoid corrosion, repeat this procedure from time to time.
The brake lamps do not come on when the parking brake is applied.
Vacuum for the brake system servo unit on your BMW is available only when the engine is running. When you move the car with the engine shut off – when towing, for instance – substantially higher levels of pedal force will be required to brake the vehicle.
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Tires
Due to technical factors associated with their manufacture, tires do not achieve their full traction potential until an initial break-in period has elapsed.
Thus drive with extra care during the initial 200 miles (300 km).
Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Driving notes
Brakes:
Do not drive with your foot resting on the brake pedal. Even light but consistent pedal pressure can lead to high temperatures, brake wear and possibly even brake failure.
Aquaplaning:
When driving on wet or slushy roads, reduce road speed. If you do not, a wedge of water can form between tires and road surface. This phenomenon is referred to as aquaplaning or hydroplaning. It is characterized by a partial or complete loss of contact between the tires and the road surface. The ultimate results are loss of steering and braking control.
Driving through water:
Do not drive through water more than
1 foot (30 cm) deep. In water of this depth, drive only at walking speed, otherwise damage to the engine, the electrical system and the transmission can occur.
Rear parcel tray:
Do not use the rear parcel tray to store heavy or bulky objects. They could pose a danger to the occupants during braking maneuvers.
Clothes hooks:
Hang items of clothing from the hooks so that they will not obstruct the driver's vision. In order to avoid personal injuries during braking maneuvers, do not hang heavy objects on the hooks.
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123 n
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124 n
Catalytic converter
The catalytic converter reduces harmful exhaust emissions, and is designed for use with unleaded fuel only.
Even minute quantities of lead would be enough to permanently damage both the catalytic converter and the system's oxygen sensor.
To ensure efficient, trouble-free engine operation and avoid potential damage:
> Be sure to comply with the scheduled maintenance requirements
> Fill the fuel tank well before it is empty
> If you have problems starting the engine, use jumper cables (you cannot tow-start the vehicle with an automatic transmission)
> Avoid other situations in which the fuel is not burned, or burns incompletely, such as engaging the starter frequently or for extended periods, or repeated start attempts in which the engine does not start (stopping and restarting an engine which is running properly does not present a problem).
Never let the engine run with any of the spark plug cables disconnected.
Be sure to comply with the instructions above to prevent unburned fuel from reaching the catalytic converter. Otherwise there is danger of overheating and damage to the catalytic converter.
Extreme temperatures occur at the catalytic converter on this and every catalyst-equipped vehicle. Heat shields are installed adjacent to some sections of the exhaust system. Never remove these shields; do not apply undercoating to their surfaces. When driving, standing at idle, and parking the vehicle, take care to avoid contact between the exhaust system and flammable materials (grass, hay, leaves, etc.). Such contact could lead to a fire, resulting in personal injury and property damage.
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Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Antilock Brake System (ABS)
125 n
The concept
ABS enhances active safety by helping to prevent the wheels from locking during brake applications. The reason:
Locked wheels are dangerous. When the front wheels slide, the driver loses steering control over the vehicle. Traction loss at the rear wheels can cause the rear end to break into an uncontrolled skid.
The system can achieve the shortest braking distances possible under most conditions (on straights and in curves, on asphalt, ice, wet road surfaces, etc.).
ABS is designed to meet two essential requirements during every brake application:
> To help provide vehicle stability
> To help maintain steering control and maneuverability – on all types of road surfaces (asphalt, concrete, mud, wet pavement, snow, ice).
Braking with ABS
The system becomes operative once the vehicle exceeds a speed of approx.
6 mph (10 km/h). The ABS is deactivated whenever the vehicle's speed drops back below approx. 4 mph (6 km/h). This means that the wheels can lock in the final phase of a panic stop – a factor of no significance in actual use.
If you are in a situation which requires full braking, you will exploit the full benefits of the ABS system if you apply maximum brake pressure ("panic stop").
Since the vehicle maintains steering responsiveness, you can avoid possible obstacles with a minimum of steering effort, despite the full brake application.
The ABS system closed-loop control circuit cycles in fractions of a second.
A pulsation at the brake pedal indicates to the driver that ABS is active, that is, that the vehicle is within its maximum braking range. In addition, a pulsation – a result of the control function cycles – indicates to the driver that vehicle speed should be reduced to adapt to road surface conditions when there is reduced traction and grip between tires and road surface (slippery road surface).
Always depress the brake pedal with constant pressure. Keep the brake pedal down. Do not pump the brakes.
In driving conditions where there is a loose upper surface together with a subsurface which provides better traction (on gravel or snow, for instance), or with snow chains, the braking distance may also be longer than when the wheels are locked. However, ABS continues to provide enhanced vehicle stability and steering response under these conditions.
Information for your safety
Not even ABS can suspend the laws of physics. ABS alone cannot prevent accidents when the brakes are applied without an adequate safety interval between vehicles, if the car is driven at an excessive rate of speed in curves, or if aquaplaning occurs. Responsibility for these types of situations remains in the hands (and at the feet) of the driver. You should never allow the added safety of
ABS to lull you into a false sense of security, or mislead you into taking increased risks that could affect your own safety and that of others.
Do not make any modifications to the ABS system.
Service procedures on ABS are to be performed by authorized technicians only.
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126 n
Antilock Brake System (ABS)
In the event of a fault
If the ABS warning lamp in the instrument cluster comes on, re-
fer to page 21 . The brake sys-
tem then reverts to conventional operation as on vehicles without
ABS. However, have the brake system checked by your BMW center as soon as possible. To prevent undetected defects and cumulative faults from adversely affecting the brake system, refer any problems to your authorized BMW center at the earliest opportunity.
Disc brakes
Disc brakes furnish optimum deceleration and braking control and greater fade resistance under heavy use.
When the vehicle is driven only occasionally, during extended periods when the vehicle is not used at all, and in operating conditions where brake applications are less frequent, there is an increased tendency for corrosion of the rotors and accumulation of contamination on the brake pads. This occurs because the minimal pressure which must be exerted by the pads to clean the rotors by brake applications is not reached.
If the brake rotors are corroded, they will tend to respond to braking with a pulsating effect which even extended application will fail to cure.
We recommend the use of original
BMW brake pads and components, otherwise driving safety can be impaired.
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Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Disc brakes
127 n
Driving notes
While driving in wet conditions and in heavy rain, it is a good idea to apply light pressure to the brake pedal every few miles. Watch traffic conditions to ensure that this maneuver does not endanger other road users. The heat generated in this braking process helps dry the brake pads and rotors.
Maximum braking force is obtained while the wheels continue to rotate, peaking when the wheels remain on the verge of locking without actually doing so. ABS maintains this state automatically. If the ABS fails, you should revert to the staggered braking technique de-
scribed below (refer to page 129 ).
Extended or steep mountain descents do not necessarily have to lead to reduced braking efficiency; downshift to a gear in which only minimal periodic brake applications are required - move the selector lever to the appropriate lower range.
You can continue to increase the braking effect of the engine by selecting a lower gear - you can select transmission ranges as low as position 2 for extreme conditions.
Should engine braking prove inadequate, you should still avoid extended, continuous braking. Instead of maintaining low to moderate pressure over an extended period of time, you should decelerate the vehicle by applying more substantial force on the pedal (watch for following traffic!) and then pausing before repeating the application. This staggered braking technique allows the brakes to cool in the intervals between active braking phases, preventing overheating and ensuring that full braking capacity remains available at all times.
Do not coast with the transmission selector lever in neutral. Do not drive with the engine shut off. The engine provides no braking effect when the transmission is in neutral, and there is no power-assist for braking or steering when the engine is shut off.
Never allow floor mats, carpets or any other objects to protrude into the area around the accelerator and brake pedals and obstruct their movement.
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Dynamic Brake Control (DBC)
*
If you apply the brakes rapidly, this system automatically produces the maximum braking force boost and thus helps to achieve the shortest possible braking distance during "panic stops."
All of the benefits of the ABS system are exploited under these circumstances.
Do not reduce the pressure on the brake pedal for the duration of the brake application. When the brake pedal is released, the DBC is deactivated.
In the event of a malfunction, the warning lamp comes on with a yellow light. Conventional braking efficiency is available without limitations.
Have the system checked and repaired at your BMW center as soon as possible.
For "Information for your safety" covering the ABS system, refer to
page 125 . This information also gener-
ally applies for DBC.
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128 n
Brake system Winter operation
Brake fluid level
The warning lamp for the brake hydraulic system comes on or the message "Check Brake
Fluid" appears in the Check
Control:
The brake fluid level is too low in the
reservoir. Refer to page 147 .
If the brake fluid level is too low and brake pedal travel has become noticeably longer, there may be a defect in one of the brake system's hydraulic circuits.
The remaining circuit continues to provide adequate brake-system performance.
Brake pads
The message "Check Brake Pads" appears in the Check Control:
The brake pads have reached their minimum pad thickness. Proceed to the nearest authorized BMW center as soon as possible to have the pads replaced.
The onset of winter is often accompanied by rapid changes in weather. Adaptations in driving style should be accompanied by preparations on the vehicle itself to ensure that your vehicle operation through the winter remains safe and trouble-free.
We recommend the use of original
BMW brake pads and components, otherwise driving safety can be impaired.
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Coolant
Be sure that the coolant mixture is kept at the year-round ratio of 50:50 (water and antifreeze/corrosion protection).
This mixture provides protection against freezing down to approx. –34 7
(–37 6 ). Replace the coolant every four years.
Proceed to the nearest authorized
BMW center. Higher brake application pressure may be necessary under these conditions, and brake pedal travel may be significantly longer.
Please remember to adapt your driving style accordingly.
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Locks
BMW door lock deicer can be used to free the locks if they are frozen. This deicer also contains lubricant.
After using deicer, treatment with BMW lock barrel grease is recommended.
The warning lamp also comes on with the "Check Brake Pads" message in the
Check Control.
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Winter operation
129 n
Rubber seals and components
In order to prevent the weather-stripping from freezing, apply rubber treatment or a silicone spray to the seals on the doors, hood and luggage compartment lid.
A full range of car care products is available from your BMW center.
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Snow chains
BMW snow chains * can be fitted on both summer and winter tires in response to severe winter road conditions. Mount them in pairs on the rear wheels only, and be sure to comply with the manufacturer's safety instructions.
Do not exceed a maximum speed of
30 mph (50 km/h). In this situation
(snow chains mounted), deactivate the
ASC+T or DSC *
Driving on low-traction road surfaces
Use smooth, gentle pressure to control the accelerator pedal. Avoid excessive engine speeds and shift to the next higher gear at an early point. Adapt your speed and driving style when approaching grades. Maintain an adequate distance between yourself and the car ahead.
Brakes
Winter road conditions substantially reduce the amount of traction available between the tires and the road surface; the resulting increases in braking distance are considerable and should be continually borne in mind.
ABS is intended to prevent the wheels from locking during brake applications, thus helping to maintain vehicle stability and steering response.
If the ABS does not respond in a critical braking situation and the wheels lock:
Reduce the pressure on the brake pedal until the wheels just start to roll again while still maintaining enough force to continue braking.
Following that, increase pedal pressure again. Reduce the pressure as the wheels lock, then reapply pressure, etc.
This type of staggered braking will reduce the braking distance, and the vehicle still remains responsive to steering.
You can then attempt to steer around hazards after you have reduced pressure on the brake pedal.
Do not shift down on slick road surfaces. Doing so could cause the rear wheels to lose traction and skid, which could result in the loss of vehicle control.
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Starting off
When starting off in deep snow or when rocking the car to free it, we recommend that you switch the ASC+T or
DSC *
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130 n
Winter operation Power steering Level control system
*
Skid control
Release the accelerator pedal. Countersteer carefully and attempt to regain control of the vehicle.
Parking
Place the selector lever in position P
(Park). Engage the parking brake when parking on hills and inclined surfaces. In order to prevent the parking brake linings from locking in the drum due to frost or corrosion, dry them by gently applying the parking brake as the vehicle is coming to a stop. Make sure that following traffic is not endangered.
The brake lamps do not come on when the parking brake is applied.
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High steering effort:
Check the fluid level. Refer to
High steering effort during sudden transitions:
Consult your authorized BMW center immediately for an inspection.
Servotronic special
*
If steering becomes lighter as speed increases:
Malfunction in the electronic control system. Have your BMW center inspect this system as soon as possible.
If the power steering fails, increased effort will be required to steer the vehicle.
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If the message "LEVEL CONTROL IN-
ACTIVE" appears in the Check Control, there is a malfunction in the level control system.
Stop and inspect the vehicle. If it is riding significantly lower in the rear than in the front, or if it is sitting at an incline (left rear compared to right rear), consult the nearest authorized BMW center. Drive with appropriate caution in the meantime. The vehicle has reduced ground clearance or driving comfort is noticeably reduced.
Even if the attitude of the vehicle is normal, you should consult the nearest authorized BMW center if the warning lamp indicates a system fault.
Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Cellular phone Radio reception
Mobile communications systems (cellular phone, radio, etc.) are permitted with an output up to 10 watts only. Even these systems may trigger malfunctions in the operation of your vehicle if they are not specifically designed for use with the vehicle. BMW can neither test nor assume responsibility for every individual product being offered on the market. We recommend that you consult your BMW center before purchasing any device of this kind.
To ensure that your BMW continues to provide reliable and trouble-free operation, refrain from using a cellular phone or other radio device with an antenna located inside the passenger compartment. The antenna should always be mounted on the outside of the vehicle.
Before loading the vehicle on a car-carrier train or driving it through a car-wash, remove the antenna.
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The reception and sound quality obtained from mobile radios varies according to a variety of factors, including the broadcast range of the transmitter and the directional orientation of the antenna. Interference factors such as high-tension power lines, buildings and natural obstructions can all lead to unavoidable reception interference, regardless of how well the vehicle sound system is operating.
Climatic factors such as intense solar radiation, fog, rain and snow can also interfere with reception.
Cellular phones without official BMW approval can also generate interference. This phenomenon assumes the form of a low-pitched hum emanating from the speaker system.
Please refer to the supplementary operating instructions provided with your sound system for detailed information on its use.
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132 n
Tire inflation pressure Tire condition
Information for your safety
The factory-approved radial tires are matched to the car and have been selected to provide optimum safety and driving comfort on your car.
It is not merely the tire's service life, but also driving comfort and - above all else
- driving safety which depend on the condition of the tires and the maintenance of the specified tire pressure.
Incorrect inflation pressure is a frequent cause of tire damage. They also influence the roadholding ability of your
BMW.
Check tire inflation pressures – including the spare tire – regularly, at least every two weeks and before beginning a longer trip. If this is not done, incorrect tire pressures can cause driving instability and tire damage, ultimately resulting in accidents.
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Tire tread
–
tire damage
Inspect your tires frequently for tread wear, signs of damage and for foreign objects lodged in the tread. Check the tread depth.
Tread depth should not be allowed to go below 0.12 in (3 mm), even though the legally specified minimum tread depth is only 0.063 in (1.6 mm). Wear indicators appear in the tread at 0.063 in
(1.6 mm) to indicate that the legally permissible wear limit has been reached.
Below 0.12 in (3 mm) tread depth, there is an increased risk of aquaplaning, even at relatively moderate speeds and with only small amounts of water on the road.
Do not drive on a deflated (flat) tire. A flat tire greatly impairs steering and braking response, and can lead to complete loss of control over the vehicle.
Avoid overloading the vehicle so that the permitted load on the tires is not exceeded. Overloading can lead to overheating and increases the rate at which damage develops inside the tires.
The ultimate result can assume the form of a sudden air loss.
Unusual vibrations encountered during normal vehicle operation can indicate tire failure or some other vehicle defect, as can variations in normal vehicle response, such as a pronounced tendency to pull to the left or right. Should this occur, respond by immediately reducing your speed and carefully proceeding to the nearest BMW center or professional tire center, or having the vehicle towed in to have it and its tires inspected.
Tire damage (up to and including blowouts) can endanger the lives of both the vehicle occupants and other road users.
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Tire replacement Tire rotation
133 n
To maintain good handling and vehicle response, use only tires of a single tread configuration from a single manufacturer. BMW tests and approves wheel/tire combinations. Refer to
Do not use retreaded tires, since driving safety may be impaired by their use. This is due to the possible variations in casing structures and, in some cases, to their extreme age, which can lead to a decrease in their durability.
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Tire age
The date on which the tire was manufactured is indicated by the code on the sidewall:
DOT ... 178 means that the tires were manufactured in the 17th week of 1998.
BMW recommends the replacement of all tires when the tires are no more than
6 years old, even if a tire life of 10 years is possible.
Spare tires over 6 years old should be used only in case of emergency. Such a tire should be replaced by a new tire immediately, and should not be mounted together with new tires.
Between the axles
The tread wear patterns at the front end differ from those at the rear - the actual patterns will vary according to individual driving conditions. In the interests of safety and maintaining optimal handling characteristics, tire rotation is not recommended.
If a proposed interaxle rotation of tires is based on economic considerations, one should consider whether the costs for the rotation are likely to be recaptured by any increase in the service life of the tires which might be realized. Rotation should always be carried out at short intervals, with a maximum of
3,000 miles (5,000 km). Consult your authorized BMW center for more information.
Should you decide to rotate the tires, it is essential to comply with the following:
Rotate tires on the same side only, since braking characteristics and road grip could otherwise be adversely affected.
Following rotation, correct the tire inflation pressure.
If different tire sizes are mounted on the front and rear axles
(page 136 ), the tires may not be rotated
from one axle to the other.
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134 n
Wheel and tire combinations
The right choice
Use only tires approved by BMW. Refer
Because of the high speeds this vehicle can reach, the use of specific tire brands, specifications and dimensions is mandatory. Consult any BMW center for details.
Comply with national, state, or provincial regulations.
Codes on tires and wheels
The tire codes will aid you in selecting the correct tire.
Codes on radial tires:
For example 235/60 R 16 100W
Nominal width in mm
Aspect ratio in %
Radial tire code
Rim diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)
The correct wheel-tire combination affects different systems such as ABS, ATC, ASC+T/DSC. The function of these systems is impaired if improper wheel-tire combinations are used.
For this reason, use only tires of the same brand and tread pattern. In the event of a flat tire if you have mounted winter tires, for example, remount the approved wheel-tire combination as soon as possible.
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The speed rating indicates the approved maximum speed for the tire.
Summer tires:
S = up to 112 mph (180 km/h)
T = up to 118 mph (190 km/h)
H = up to 130 mph (210 km/h)
V = up to 149 mph (240 km/h)
W = up to 167 mph (270 km/h)
ZR = over 149 mph (240 km/h)
Winter tires:
Q M+S = up to 100 mph (160 km/h)
T M+S = up to 118 mph (190 km/h)
H M+S = up to 130 mph (210 km/h)
Codes stamped on light-alloy wheels:
For example 71/2 J x 16 H 2
Rim width in inches
Code letter for flange type
Symbol for full-drop center rim
Rim diameter in inches
Hump on the 2 rim shoulders
Protect valve inserts against dirt using screw-on valve stem caps. Dirt in the valves frequently leads to slow leaks.
Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Winter tires Snow chains
* 135 n
Choosing the right tire
BMW recommends winter tires (M+S radial tires) for driving in adverse winter road conditions. While tires known as all-season tires (M+S designation) provide better winter traction than summer tires with load ratings H, V, W and ZR, they generally do not achieve the performance of winter tires.
In the interests of sure tracking and safe steering response at all four wheels, mount winter tires which are made by the same manufacturer and which have the same tread configuration.
Mount only winter tires which have been approved by BMW. Any BMW center will be glad to provide you with information on the best winter tires for your particular driving conditions.
Do not exceed specified maximum speeds
Never exceed the maximum speed for which the tires are rated.
Unprofessional attempts by laymen to service tires can lead to damage and accidents.
Have this work performed by skilled professionals only. Any BMW center has the required technical knowledge and the proper equipment and will be happy to assist you.
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Tire condition, tire pressure
Winter tires display a perceptible loss in their ability to cope with winter driving conditions once the tread wears to below 0.16 in (4 mm), and should thus be replaced.
Comply with the specified tire inflation pressures - and be sure to have the wheel and tire assemblies balanced every time you change the tires.
Use narrow-link BMW snow chains on summer or winter tires only in pairs and only on the rear wheels. Comply with all manufacturer's safety precautions when mounting the chains.
Storage
Store tires in a cool, dry place, away from light whenever possible. Protect the tires against contact with oil, grease and fuel.
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136 n
Approved wheel and tire specifications
Light-alloy wheel Tire specifications
All season tires
235/60 R 16 100 H M+S
Summer tires
235/60 R 16 100 W
245/55 R 16 100 W
235/50 ZR 18
Rear: 255/45 ZR 18
Winter tires (M+S)
215/65 R 16 98 Q
235/60 R 16 100 Q
245/55 R 16 100 Q
Note the tire and wheel data in the official documents of the car. If sizes not approved by the manufacturer are mounted, an entry in the vehicle's documents may be necessary. Comply with local legislation.
7.5Jx16
8Jx16
7.5Jx16
8Jx16
8Jx16
8Jx18
9Jx18
9.5Jx18
7.5J x 16
7.5Jx16
8Jx16
8Jx16
The use of rims and wheel bolts that do not meet the specifications of the original factory-installed equipment will affect the safe operation of your vehicle and may cause an accident and personal injury.
Never mix tires of different design, such as steel-belted radials with radial biasbelted or bias-ply tires, etc. Mixing tire types will adversely affect roadholding and can lead to loss of vehicle control.
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Hood
137 n
To unlock the hood
Pull the lever located at the lower lefthand side of the instrument panel.
Do not work on your vehicle without appropriate skills. Switch off the engine and allow it to cool down before working in the engine compartment.
Always disconnect the battery before working on any electrical systems or equipment. Comply with all applicable instructions and warnings. Failure to work in an informed, professional manner when servicing components and materials constitutes a safety hazard for vehicle occupants and other road users. If you are not familiar with the guidelines, please have the operations performed by your authorized BMW center.
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To open
Pull the release handle and open the hood.
To close
Press down lightly on the hood at the locations shown in the illustration (arrows) or drop it from approx. 4 inches
(10 cm) so that it audibly engages.
To avoid injuries, be sure that the travel path of the hood is clear when it is closed, as with all closing procedures.
If it is determined that the hood is not completely closed while driving, stop immediately and close it securely.
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138 n
Engine compartment – BMW 740i/L
Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Engine compartment – BMW 740i/L
1 Brake fluid reservoir
2 Power steering fluid reservoir/
3 Auxiliary terminal for jump starting
4 Engine oil dipstick
5 Engine oil filler neck
7 Reservoir for headlamp
and windshield washer system 142
8 Fuse box
139 n
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140 n
Engine compartment – BMW 750iL
Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Engine compartment – BMW 750iL
1 Brake fluid reservoir
2 Power steering fluid reservoir/
3 Auxiliary terminal for jump starting
4 Engine oil filler neck
6 Engine oil dipstick
7 Reservoir for headlamp
and windshield washer system 142
8 Fuse box
141 n
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142 n
Washer fluids Washer nozzles
Headlamp
*
and windshield washer system
The filling capacity is approx. 4.7 US quarts (4.5 liters) for the windshield washer system or approx. 6.3 US quarts (6.0 liters) together with the headlamp washer system.
Fill with water and - when needed - with a washer antifreeze (according to manufacturer's recommendations).
Antifreeze agents or intensive windshield cleaning agents for the washer systems are highly flammable.
For this reason, keep them away from sources of flame and store them only in their original containers. Store them so that they are inaccessible to children.
Comply with the instructions on the containers.
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Windshield washer
The spray from the nozzles should be directed so as to ensure effective cleaning, even at high speeds.
Use a needle to adjust the nozzles as required, or have them adjusted at your authorized BMW center.
Headlamp washer system
Have the nozzles adjusted by your
BMW center as required.
We recommend that you mix the washer fluid before adding it to the reservoir.
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Online Edition for Part-No. 01 41 9 791 187 - © 12/98 BMW AG
Engine oil
143 n
Checking the engine oil
1 Park the vehicle on a level surface
2 Shut the engine off after it has reached normal operating temperature
3 After approx. 5 minutes, pull the dipstick out and wipe it off with a clean lint-free cloth, paper towel, or similar material
4 Push the dipstick all the way into the guide tube and pull it out again
5 The oil level should be in between the two graduations on the dipstick.
As with fuel economy, oil consumption is directly influenced by your driving style and vehicle operating conditions.
The oil volume between the two marks on the dipstick corresponds to approx.
1.1 US quarts (1 liter). Do not fill to beyond the upper mark on the dipstick.
Excess oil will damage the engine.
Adding engine oil
Wait until the level has dropped to just above the lower mark before adding oil.
However, do not wait until the oil drops below the lower mark.
BMW engines are designed to operate without oil additives. The use of additives could lead to damage in some cases. This is also true for the automatic transmission, the differential and the power steering system.
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144 n
Engine oil
Engine oil specifications
The quality of the engine oil selected has critical significance for the operation and service life of an engine. Based on extensive testing, BMW has approved only certain engine oils.
Use approved "longlife oils" only.
If it should ever occur that it is impossible to purchase an approved "longlife oil," you may use small volumes of the
"special oils" approved by BMW for topping up between oil changes.
You may use oils with the specification
API SH only if the special oils are also not available.
Viscosity ratings
Viscosity is the oil flow rating as established in SAE classes.
The selection of the correct SAE class depends on the climatic conditions in the area where you drive your BMW.
BMW recommends the use of oils in
SAE classes SAE 0W-X or SAE 5W-X, where "X" stands for a specification such as 30, 40 or 50.
These oils may be used for driving in all ambient temperatures.
If you are using SAE class 10W-X, you may continue to drive for short periods at temperatures below this limit. However, the engine's cold-starting characteristics may be impaired.
Call 1-800-831-1117, or ask your authorized BMW center for details concerning the specific "longlife oils" or "special oils" which have been approved.
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Engine oil
Comply with the applicable environmental laws regulating the disposal of used oil.
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Recommendation: Have the oil changed by your BMW center.
Continuous exposure to used oil has caused cancer in laboratory testing.
Any skin areas that come into contact with oil should therefore be thoroughly washed with soap and water.
Store oils, greases, and similar materials so that they are inaccessible to children. Comply with all warnings on the containers.
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Coolant
Do not add coolant to the cooling system when the engine is hot.
Escaping coolant can cause burns.
To avoid the possibility of damage later on, never use anything other than factory-approved, nitrite and amino-free extended-duty antifreeze with corrosion protectant. Your authorized BMW center is familiar with the official specifications.
Antifreeze and anti-corrosion agents are hazardous to health. Store antifreeze and anti-corrosion agents in their original containers where they are inaccessible to children.
Extended-duty antifreeze with corrosion inhibitor contains ethylene glycol - a flammable substance. For this reason, do not spill antifreeze with corrosion inhibitor on hot engine components. It could catch fire and cause serious burns.
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Correct coolant level when the engine is cold (approx. 68 7 /20 6 ):
Unscrew the cap from the expansion tank.
The coolant level is correct when the end of the red float is aligned with the upper edge of the filler opening (refer to the arrow in the illustration or the schematic diagram next to the cap).
The coolant is a mixture of water and extended-duty antifreeze with corrosion inhibitor. Always maintain the prescribed all-season 50:50 mixture ratio for year-round protection against internal corrosion. No other additives are required.
Replace the coolant every four years.
To add coolant
Wait until the engine cools before removing the cap from the expansion tank. The needle of the coolant temperature gauge in the instrument cluster must be located in the blue zone; otherwise, there is a danger of scalding.
1 Start by turning the cap counterclockwise. Pause to allow any accumulated pressure to escape, then remove the cap
2 If the coolant is low, slowly add coolant until the correct level is reached – do not overfill.
Comply with the applicable environmental laws regulating the disposal of extended-duty antifreeze with corrosion inhibitor.
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Brake fluid
Brake fluid level
Brake hydraulic system warning lamp comes on, "Check brake fluid" appears in the Check Control display: The brake fluid level is too low in the reservoir.
Fill up to upper mark ("MAX" level visible through the transparent reservoir).
Any BMW center can provide you with information on factory-approved brake fluids (DOT 4).
Brake fluid loss results in extended pedal travel. Refer to the information on
Brake fluid is hygroscopic, that is, it absorbs moisture from the air over time.
In order to ensure the operating safety of the brake system, have the brake fluid changed every two years by your
BMW center. Refer also to the Service
Warranty Information Booklet (US models) or to the Warranty and Service
Guide Booklet (Canadian models).
Brake fluid is toxic and damages the vehicle's paint. Always store brake fluid in the original containers. Keep the containers tightly closed and out of reach of children. Do not spill brake fluid. Do not fill beyond the "MAX" level in the reservoir. The brake fluid could ignite upon contact with hot engine parts and cause serious burns.
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Comply with the applicable environmental laws regulating the disposal of brake fluid.
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Oil for power steering/Level control system
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Vehicle Identification Number
Power steering
With the engine off, unscrew the reservoir cap and remove the cap with dipstick. Then push the dipstick into the reservoir again.
The fluid level should be in between the marks on the dipstick.
Screw the reservoir cap back on.
Contact your BMW center if the fluid is low, as only ATF may be used and special knowledge is required for topping up.
Power steering/Level control system
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With the engine shut off, loosen the knurled nut and remove the reservoir cap.
With the vehicle empty, the fluid level should be barely 0.2 in (5 mm) above the screen bottom.
Correct the fluid level if required. Always use Pentosin CHF 11S.
Position the reservoir cap and tighten the knurled nut. Make sure the cover is properly seated.
In the engine compartment, stamped on the right-hand strut dome (arrow) and on the upper edge of the instrument panel on the left side.
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The BMW Maintenance System
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The BMW Maintenance System has been designed as a reliable means of providing maximum driving and operating safety – and as cost-effectively as possible for you.
Please keep in mind that regular maintenance is not only necessary for the safety of your vehicle, but also plays a significant role in maintaining the resale value of the vehicle.
Service Interval Display
Advanced technology is employed to calculate the optimal maintenance intervals, which are then indicated in the
Service Interval Display. While conventional systems rely on distance traveled alone to determine when service is due, the BMW Maintenance System has for years considered the actual conditions under which the vehicle operates.
From the point of view of maintenance,
62,000 miles (100,000 km) accumulated in short-distance urban driving are not the equivalent of the same distance covered at moderate speeds in longdistance highway travel. In response to this fact, the BMW Maintenance System monitors operating conditions as the basis for determining the optimum service intervals for your individual vehicle.
The BMW Maintenance System includes the Engine Oil Service and Inspections I and II.
Determining the maintenance intervals according to the actual loads on the car covers every kind of operating situation.
However, even those who drive only short distances – significantly less than
6,200 miles (10,000 km) annually – should have the engine oil changed at least every 2 years since oil deteriorates over time, regardless of use.
Service and Warranty Information
Booklet (US models)/Warranty and Service Guide Booklet
(Canadian models)
Please refer to the Service and Warranty Information Booklet (US models) or to the Warranty and Service Guide
Booklet (Canadian models) for additional information on maintenance intervals and procedures.
Depending upon operating conditions, as a precaution against rust it may be a good idea to have the body checked for stone damage and chips at the same time.
Have your BMW center do the maintenance and repair. Your BMW center is always informed on the latest maintenance work and repair techniques and equipped with the required special tools. In addition, checking parts known from experience to be subject to wear is a permanent part of the maintenance specifications. Be sure that all maintenance work is confirmed in the Service and Warranty Information
Booklet (US models) or in the Warranty and Service Guide Booklet (Canadian models). These entries will constitute your proof that the vehicle has received regular maintenance. They are also required in the event of a warranty claim.
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Caring for your car
Washing your car
You can have your new BMW washed in an automatic car wash. Car wash systems that do not employ brushes are preferable.
Wipe away tough dirt and loosen and remove dead insects before washing the car.
To prevent spots, avoid washing when the hood is still warm, or immediately after and during exposure to strong sunlight.
When using an automatic car wash, be sure that:
> The car wash system is suited for the dimensions of your vehicle
> No damage will occur on vehicles with attached body accessories (such as spoilers or antennas). If you are uncertain, consult the manager of the car wash
> The wheels and tires of your vehicle cannot be damaged by the conveyance devices of the car wash system
> The vehicle is cleaned with minimum brush pressure, and that ample water is available for washing and rinsing.
Vehicles with rain sensor * :
Clean the windshield regularly. Wax from automatic car washes or insects, for example, can cause malfunctions in the function of the rain sensor.
Turn the rain sensor off in automatic car washes. If you do not, damage may occur if the wipers switch on unintentionally.
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Parts of the car which are inaccessible to the automatic washer - such as door sills, door and hood edges, etc. - should be cleaned by hand.
In the winter months, it is especially important to ensure that the car is washed on a regular basis. Large quantities of dirt and road salt are difficult to remove, and they also cause damage to the vehicle.
If spray wands or high-pressure washers are used, be sure to maintain an adequate distance between the spray source and the vehicle's surface.
Inadequate distance and excessive pressure can damage or weaken the finish, making it more susceptible to subsequent attack. In addition, moisture could penetrate to vehicle components, leading to long-term damage.
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When cleaning the headlamps, please observe the following:
> Do not clean by wiping with a dry cloth (scratches). Never use abrasives or strong solvents to clean the covers
> Remove dirt and contamination
(such as insects) by soaking with
BMW Car Shampoo and then rinsing with plenty of water
> Always use a deicer spray to remove accumulated ice and snow – never use a scraper.
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After washing the car, apply the brakes briefly to dry them. Braking efficiency might otherwise be reduced by the moisture, and the brake rotors could also be corroded.
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Caring for your car
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Exterior finish
To provide effective corrosion protection, multilayer paintwork is applied at the factory. Cataphoretic immersion priming techniques are supplemented using special body-cavity protectants, with the application of specially-developed and extensively tested materials.
A layer of flexible PVC is first applied to the undercarriage. Following this, a comprehensive undercoating treatment with a wax-based protectant is applied.
Regular maintenance makes an important contribution to maintaining the safety and value of your vehicle.
Increasing awareness of the effects of harmful environmental factors on a vehicle's exterior finish have led paint and vehicle manufacturers to initiate programs designed to further improve the durability of their finishes. Despite this, environmental factors that occur locally or regionally can have negative effects on the finish of your vehicle. These should guide you in determining the frequency and extent of your efforts to maintain the vehicle finish.
Depending upon material and type of impact (perforation of paint layer), physical stresses from sand, road salt, gravel, etc., can cause corrosion to start extending beneath the finish, starting at the point of impact.
Road dirt, tar spots, dead insects, animal droppings (strong alkali effect) and tree excretions (resins and pollen) all contain substances capable of causing damage when allowed to remain on the finish of your car for any period of time
(spots, etching, flaking, separation in the top coat).
In industrial areas, deposits of flue dust, lime, oily soot, precipitation containing sulfur-dioxide (acid rain) and other environmental pollutants will damage the car's finish unless adequate care is provided – even though this is generally limited to the outside horizontal surfaces.
In coastal regions, high levels of atmospheric salt and humidity promote corrosion.
In tropical zones, temperatures of over
105 7 (40 6 ) in the shade prevail, in addition to heavy ultraviolet radiation and high humidity. Under those circumstances, light exterior finishes reach temperatures of up to 175 7 (80 6 ) and dark finishes up to 250 7 (120 6 ).
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Caring for your car
Caring for the vehicle finish
Regular washing is a preventive measure against long-term effects from substances that are harmful to the vehicle's finish, especially if you drive your vehicle in areas with high levels of air pollution or aggressive natural substances (tree resins, pollen).
Nevertheless, you should immediately remove especially aggressive substances. Failure to do so can lead to changes in the paint's chemical structure or to discoloration. Gasoline spilled during refueling, oil, grease and brake fluid should always be cleaned away immediately, as should bird droppings.
All of these substances cause damage to the finish.
Any contamination remaining on the surface of the vehicle will be especially conspicuous after washing. Use cleaning fluid or alcohol with a clean cloth or cotton pad to remove. Remove tar spots with tar remover. After cleaning, the affected areas should be waxed to ensure continued protection.
Waxing your car
Protect the finish using carnauba or synthetic-based waxes only.
The best way to determine when the finish needs to be waxed is by noting when water stops beading on the surface.
You can use a glass cleaner to remove any wax or silicone that may have been left on the windows during waxing.
A full range of car-care products is available from your BMW center.
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Paint damage
You can touch up small areas of damage with BMW spray paint or a BMW touch-up stick.
The color code of your vehicle is located on a tag near the vehicle's data plate and on the first page of the Service and Warranty Information Booklet
(US models) or of the Warranty and Service Guide Booklet (Canadian models).
Damage caused by flying stones, scratches, etc., must be touched up without delay to prevent rust from forming.
If corrosion has started to form in an area with paint damage, remove all rust and clean the area. Then prime the area with a BMW Primer Stick. Finally, apply the finish coat. Wait a few days, then polish the repaired area. Finish by applying a wax preservative.
More extensive paint damage should be repaired professionally in accordance with the manufacturer's instructions.
Your BMW center uses original BMW finish materials in accordance with approved repair procedures.
A full range of car-care products is available from your BMW center.
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Caring for your car
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Window care
Water and dirt-repelling windshield (re-
The effectiveness of the coating is not impaired by the wax used in car washes or by windshield-washer additives.
Depending on the frequency of use of the windshield wipers as well as on environmental factors, the coating of the windshield is subject to natural wear.
As a result, the beneficial characteristics of the coating gradually diminish.
After approx. 12,400 to 15,500 miles
(approx. 20,000 to 25,000 km), the windshield begins to resemble more and more a standard windshield.
The coating can be renewed by your
BMW center.
You can use window and glass cleaner to clean interior window surfaces and mirrors without streaking. Never use polishing pastes or abrasive (quartz) cleansers on mirror lenses.
Break-resistant security glass
The glass used for the side windows is designed to provide resistance to breakage and protection against vandalism. These break-resistant windows contain several layers of a transparent plastic film which is sandwiched between the inner and outer glass panes.
There is also one additional plastic film on the inside of the glass pane (facing the passenger compartment). This film prevents shards of glass from spreading into the passenger compartment if the window is shattered.
Please observe the following precautions pertaining to this film when caring for the interior glass surfaces:
> The film is not scratch-resistant. For this reason, do not touch the glass with sharp objects which could damage the film
> Clean the glass with clean water. If necessary, you may also use regular household window cleaners. Wipe the cleaner off immediately.
Do not use window cleaners containing solvents or abrasives. These cleaners can mar the film
> Do not apply any self-adhering decals, adhesive labels or other stickers with tape to the inner window surface
> Do not apply colored films to the inside surfaces of the side windows
> If the windows are fogged or iced over in cold or humid climates, do not use an ice scraper or ice-removing sprays to clean them. Start the engine and refer to the instructions for defrosting the door windows.
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Caring for your car
Caring for other vehicle components and materials
Light-alloy wheels should be treated with alloy wheel cleaner, especially during the winter months. However, do not use aggressive products containing acids, strong alkalis or abrasives. Do not use steam cleaners operating at temperatures above 140 7 (60 6 ). Follow the manufacturer's instructions.
If your vehicle has chromed parts * such as window moldings, door handles or other parts, clean these parts especially carefully with ample clean water, especially if they have an accumulation of road salt. You may wish to add a car shampoo supplement to the water. Use a chrome polish for an additional treatment.
Plastic components, vinyl upholstery, headliners, lamp lenses, the clear cover of the instrument panel and components with a sprayed dull black surface can be cleaned with water (add plastic cleaner as required). Do not allow moisture to soak through the seats or headliner. Never use solvents such as lacquer thinner, heavy-duty grease remover, fuels, etc.
Rubber components should be cleaned with water only; a rubber treatment or silicone spray may also be applied.
Clean the wiper blades with soapy water. The wiper blades should be replaced twice a year, before and after the cold season.
Use only wiper blades approved by BMW.
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The safety belts should be cleaned with a mild soap and water solution without being removed from the car. Never attempt chemical or dry cleaning, as damage to the belt fabric could result.
After cleaning, never allow the inertia reel to retract the belts until they are completely dry. Dirty safety belts prevent the inertia reel mechanism from retracting the strap properly, and thus constitute a safety hazard.
Heavily soiled floor carpets and mats * can be cleaned with an interior cleaner.
The floor mats can be removed from the vehicle for cleaning.
Please use only a damp cloth to clean wooden fascia panels and components.
Follow up by drying with a soft cloth.
A full range of car-care products is available from your BMW center.
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Leather care
The leather upholstery used by BMW is a natural product of the highest quality, processed using state-of-the-art methods to ensure that it will maintain its high quality for years to come, provided that it is properly cared for.
Because this product is manufactured using natural materials, you must make allowance for its special characteristics as well as for the peculiarities of its use and care.
Regular periodic cleaning and care are essential, as dust and road dirt act as abrasives in the pores and creases of the material. This leads to wear spots and premature brittleness on the surface of the leather. We therefore suggest that you clean the leather with a vacuum cleaner or dust cloth at frequent intervals.
For cleaning, use BMW leather cleaning foam.
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Caring for your car
Since dirt and grease gradually attack the protective layer of the leather, the cleaned surfaces should be treated with
BMW leather care agent. This also acts as an antistatic agent.
For protection against dampness or moisture, treat the leather with a BMW impregnating agent.
We recommend that you perform this procedure twice a year on leather exposed to normal use.
Cleaning agents can contain substances that are dangerous or pose health risks. Therefore, always comply with the warnings and danger notices on the package.
Open the doors or windows on your vehicle when cleaning the interior. Never clean your vehicle with solvents or other materials not specifically intended for this application.
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Spills should be wiped up immediately.
Remove grease and oil stains without rubbing by carefully dabbing with a cloth soaked in spot remover.
If the upholstery is to be exposed to intense sunlight or if the vehicle is to be stored for an extended period, cover all leather surfaces (or, better yet, the windows) to prevent fading.
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Airbags Vehicle storage
1 Front airbags for driver and front passenger
2 Side impact head protection system
(front and rear * )
3 Side airbags (front and rear * )
Important safety notices
Modifications may not be made on either the wiring or the individual components in the airbag system. These include the padded steering wheel hub, the instrument panel, the side trim panels of the front or rear doors and the roof pillars or the sides of the headliner.
Never apply adhesive materials to these components or cover or modify them in any way. Do not attempt to remove or dismantle the steering wheel.
To ensure compliance with official safety regulations, entrust disposal of airbag generators to an authorized
BMW center.
Unprofessional attempts to service the system could lead to failure in an emergency or undesired airbag activation, either of which could result in personal injury.
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Consult your BMW center regarding the required special procedures if you intend to store the vehicle for longer than three months.
Do not attempt to remove the gas generators of the airbag restraint system from the vehicle. Have testing and service procedures performed by specially-qualified technicians only. In the event of a malfunction, deactivation, or triggered actuation (as a response to an accident) of the airbag restraint system, consult your authorized BMW center for repairs or service operations.
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Technical modifications to the vehicle
Any authorized BMW center will be glad to inform you of the advisability, legal requirements and factory recommendations with regard to technical modifications on the car. For this purpose, the
BMW center requires the Vehicle Identification Number and, in some cases, also the engine number.
Do not remove the protective lens and avoid staring directly at the unfiltered beam for extended periods
(several hours), as inflammation of the iris could result.
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Light-Emitting Diodes (LEDs)
Light-emitting diodes installed behind translucent lenses serve as the light source for many of the controls and displays in your vehicle. The concept behind their operation is related to that employed for lasers, and they are officially designated as Class 1 light-emitting diodes.
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OBD connector
An Illuminated indicator informs you of the need for service, not of the need to stop the vehicle.
However, the systems should be checked by your BMW center at the earliest possible opportunity.
When the filler cap is not properly tightened, the OBD system can detect the vapor leak and the indicator will light up. If the filler cap is subsequently tightened, the indicator should extinguish within a few days.
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The interface socket for the onboard diagnosis system is located beneath a cover on the center console front panel
(arrow).
A sticker with the text "OBD" is attached to the cover.
The purpose of the OBD (Onboard
Diagnostic) system is to assure proper emission control system operation for the vehicle’s lifetime by monitoring emission-related components and systems for deterioration and malfunction.
Under certain conditions, the indicator will blink or flash. This indicates a rather severe level of engine misfire. When this occurs, you should reduce speed and consult the nearest BMW center as soon as possible. Severe engine misfire over only a short period of time can seriously damage emission control components, especially the catalytic converter.
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