124
Overview of climate control systems
Useful information i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's
Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safetyrelated systems and functions.
i Read the information on qualified specialist workshops: ( Y page 24).
Overview of climate control systems
Important safety notes
G WARNING
Observe the settings recommended on the following pages. The windows could otherwise fog up. This could prevent you from observing the traffic conditions, thereby causing an accident.
G WARNING
Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled replacement interval. A clogged filter will reduce the air volume to the interior and the windows could fog up, impairing visibility and endangering you and others.
Have a clogged filter replaced as soon as possible at a qualified specialist workshop.
Climate control regulates the temperature and the humidity in the vehicle interior and filters undesirable substances out of the air.
Climate control is only operational when the engine is running. The system only works optimally when the side windows and the roof are closed.
The residual heat function can only be activated or deactivated with the ignition switched off ( Y page 133).
i Ventilate the vehicle for a brief period during warm weather, e.g. using the convenience opening feature ( Y page 88).
This will speed up the cooling process and the desired vehicle interior temperature will be reached more quickly.
i The integrated filter can filter out most particles of dust, and completely filters out pollen. A clogged filter reduces the amount of air supplied to the vehicle interior. For this reason, you should always observe the interval for replacing the filter, which is specified in the Maintenance Booklet.
Since the replacement interval depends on environmental conditions, e.g. heavy air pollution, the interval may be shorter than stated in the Maintenance Booklet.
Overview of climate control systems
125
Control panel for dual-zone climate control
Canada only
:
Sets the temperature, left ( Y page 130)
;
Defrosts the windshield ( Y page 131)
=
?
Switches the ZONE function on/off ( Y page 131)
Activates/deactivates cooling with air dehumidification ( Y page 128)
A
B
C
D
E
F
G
H
Switches the rear window defroster on/off( Y page 132)
Sets the temperature, right ( Y page 130)
Activates/deactivates air-recirculation mode ( Y page 132)
Sets the air distribution ( Y page 130)
Increases the airflow ( Y page 131)
Reduces the airflow ( Y page 131)
Switches climate control on/off ( Y page 128)
Sets climate control to automatic ( Y page 129)
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126
Overview of climate control systems
USA only
:
Sets the temperature, left ( Y page 130)
;
Defrosts the windshield ( Y page 131)
=
?
Switches maximum cooling MAX COOL on/off ( Y page 131)
Activates/deactivates cooling with air dehumidification ( Y page 128)
A
B
C
D
E
F
G
H
Switches the rear window defroster on/off( Y page 132)
Sets the temperature, right ( Y page 130)
Activates/deactivates air-recirculation mode ( Y page 132)
Sets the air distribution ( Y page 130)
Increases the airflow ( Y page 131)
Reduces the airflow ( Y page 131)
Switches climate control on/off ( Y page 128)
Sets climate control to automatic ( Y page 129)
Information about using automatic climate control
The following contains notes and recommendations on optimum use of automatic climate control.
R
Activate climate control using the à and
¿ buttons. The indicator lamps above the à and ¿ buttons light up.
R
Set the temperature to 72 ‡ (22 †).
R
Only use the "defrosting" function briefly until the windshield is clear again.
R
Only use "air-recirculation" mode briefly, e.g. if there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up, since no fresh air is drawn into the vehicle in air-recirculation mode.
R
Use the ZONE function to adopt the temperature settings on the driver's side for the front-passenger side as well. The indicator lamp above the á button goes out.
Overview of climate control systems
127
Control panel for 3-zone automatic climate control
Canada only
Front control panel
:
Sets the temperature, left ( Y page 130)
;
=
Defrosts the windshield ( Y page 131)
Activates/deactivates the residual heat function ( Y page 133)
?
A
B
Activates/deactivates cooling with air dehumidification ( Y page 128)
Switches the rear window defroster on/off( Y page 132)
Sets the temperature, right ( Y page 130)
C
D
Switches the ZONE function on/off ( Y page 131)
Switches climate control on/off ( Y page 128)
E
F
G
H
I
J
K
L
M
N
O
Sets the air distribution ( Y page 130)
Increases the airflow ( Y page 131)
Reduces the airflow ( Y page 131)
Adjusts the climate control settings ( Y page 129)
Activates/deactivates air-recirculation mode ( Y page 132)
Sets climate control to automatic ( Y page 129)
Rear control panel
Increases the airflow ( Y page 131)
Reduces the airflow ( Y page 131)
Display
Reduces the temperature ( Y page 130)
Increases the temperature ( Y page 130)
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128
Operating the climate control systems
Information about using 3-zone automatic climate control
The following contains instructions and recommendations to enable you to get the most out of your automatic climate control.
R
Activate climate control using the à and
¿ buttons. The indicator lamps above the à and ¿ buttons light up.
R
In automatic mode, you can also use the
ñ button to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R
Set the temperature to 72 ‡ (22 †).
R
Only use the "defrosting" function briefly until the windshield is clear again.
R
Only use "air-recirculation" mode briefly, e.g. if there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up, since no fresh air is drawn into the vehicle in air-recirculation mode.
R
Use the ZONE function to adopt the temperature settings on the driver's side for the front-passenger side and the rear compartment as well. The indicator lamp above the á button goes out.
R
Use the residual heat function if you want to heat or ventilate the vehicle interior when the ignition is switched off. The
"residual heat" function can only be activated or deactivated with the ignition switched off.
Operating the climate control systems
Activating/deactivating climate control
Points to observe before use
G WARNING
When the climate control system is deactivated, the outside air supply and circulation are also deactivated. Only choose this setting for a short time. Otherwise the windows could fog up, impairing visibility and endangering you and others.
i Switch on climate control primarily using the à button ( Y page 129).
Activating/deactivating
X
X
Turn the SmartKey to position 2 in the ignition lock.
To switch on: press the à button.
The indicator lamp in the à button lights up. Airflow and air distribution are set to automatic mode.
or
X Press the ^ button.
The indicator lamp in the ^ button goes out. The previously selected settings are restored.
X To switch off: press the ^ button.
The indicator lamp in the ^ button lights up.
Activating/deactivating cooling with air dehumidification
Points to observe before use
G WARNING
If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. This may prevent you from observing the traffic conditions, thereby causing an accident.
The cooling with air dehumidification function is only available when the engine is running.
The air inside the vehicle is cooled and dehumidified according to the temperature selected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This is normal and not a sign that there is a malfunction.
Operating the climate control systems
129 i The cooling with air dehumidification function uses refrigerant R134a. This coolant does not contain chlorofluorocarbons, and therefore does not damage the ozone layer.
Activating/deactivating
X To activate: press the ¿ button.
The indicator lamp in the ¿ button lights up.
X To deactivate: press the ¿ button.
The indicator lamp in the ¿ button goes out. The cooling with air dehumidification function has a delayed switch-off feature.
X
X
Turn the SmartKey to position 2 in the ignition lock.
Set the desired temperature.
X To activate: press the à button.
The indicator lamp in the à button lights up. Automatic air distribution and airflow are activated.
i 3-zone automatic climate control: when automatic mode is activated, you can select a climate mode setting
( Y page 129).
X To switch off: press the _ button.
or
X Press the I or K button.
The indicator lamp in the à button goes out.
Problems with the cooling with air dehumidification function
When you press the ¿ button, the indicator lamp in the button flashes three times or remains off. You can no longer switch on the cooling with air dehumidification function.
X Visit a qualified specialist workshop.
Setting climate control to automatic
G WARNING
If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.
In automatic mode, the set temperature is maintained automatically at a constant level.
The system automatically regulates the temperature of the dispensed air, the airflow and the air distribution.
Automatic mode will achieve optimal operation if cooling with air dehumidification is also activated. If desired, cooling with air dehumidification can be deactivated.
Adjusting the climate mode settings
You can select the following climate mode settings in automatic mode:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft
X
X
Turn the SmartKey to position 2 in the ignition lock.
Press the à button.
X Press the ñ button repeatedly until the desired climate mode appears in the display.
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130
Operating the climate control systems
Setting the temperature
Climate control
Different temperatures can be set for the driver's and front-passenger sides.
X
X
Turn the SmartKey to position 2 in the ignition lock.
To increase/reduce: turn controls : and
B clockwise or counter-clockwise
( Y page 125).
Only change the temperature setting in small increments. Start at 72 ‡ (22 † ).
X
Only change the temperature setting in small increments. Start at 72 ‡ (22 † ).
The temperature setting for the driver's side is adopted for the rear compartment and the front-passenger side.
To increase/reduce the temperature in the rear compartment using the rear
control panel: press the r or s button on the rear control panel.
Only change the temperature setting in small increments. Start at 72 ‡ (22 † ).
3-zone automatic climate control
Automatic climate control zones
You can select different temperature settings for the driver's and front-passenger sides as well as for the rear compartment.
X
X
Turn the SmartKey to position 2 in the ignition lock.
To increase/reduce the temperature in
the front: turn controls : and B clockwise or counter-clockwise
( Y page 127).
Only change the temperature setting in small increments. Start at 72 ‡ (22 † ).
X To increase/reduce the temperature in the rear compartment using the front
control panel: press the á button.
The indicator lamp in the á button goes out.
X Turn control : clockwise or counterclockwise ( Y page 127).
Setting the air distribution
Air distribution settings
P Directs air through the center and side air vents
O Directs the airflow through the footwell air vents
S Directs air through the center, side and footwell vents
¯ Directs air through the defroster vents b Directs the airflow through the defroster, center and side air vents
(Canada only) a Directs air through the defroster and footwell vents
_ Directs the airflow through the defroster, center and side air vents, as well as the footwell air vents (Canada only) i Regardless of the air distribution setting, airflow is always directed through the side air vents. The side air vents can only be closed when the controls on the side air vents are turned downwards.
Adjusting
X Turn the SmartKey to position 2 in the ignition lock.
X Press the _ button repeatedly until the desired symbol appears in the display.
Operating the climate control systems
131
Setting the airflow
Adjusting
X
X
Turn the SmartKey to position 2 in the ignition lock.
To increase: press the K button.
X To reduce: press the I button.
i You can use automatic climate control to set the airflow in the rear compartment separately.
Switching the ZONE function on/off
X To activate: press the á button.
The indicator lamp above the á button lights up.
X
Dual-zone automatic climate control: the temperature setting for the driver's side is not adopted for the front-passenger side.
3-zone automatic climate control: the temperature setting for the driver's side is not adopted for the front-passenger side and the rear compartment.
To deactivate: press the á button.
The indicator lamp above the á button goes out.
Dual-zone automatic climate control: the temperature setting for the driver's side is adopted for the front-passenger side.
3-zone automatic climate control: the temperature setting for the driver's side is adopted for the front-passenger side and the rear compartment.
X
X
Turn the SmartKey to position 2 in the ignition lock.
To activate: press the ¬ button.
The indicator lamp in the ¬ button lights up.
The climate control system switches to the following functions:
R heating with dehumidification on
R high airflow (depending on the outside temperature)
R high temperature (depending on the outside temperature)
R air distribution to the windshield and front side windows
R air-recirculation mode off
X To deactivate: press the ¬ button.
The indicator lamp in the ¬ button goes out. The previously selected settings are restored. The heating with air dehumidification function remains on. Airrecirculation mode remains deactivated.
or
X Press the à button.
The indicator lamp in the ¬ button goes out. Airflow and air distribution are set to automatic mode.
or
X Turn controls : or B clockwise or counter-clockwise ( Y page 125)
(THERMATIC automatic climate control),
( Y page 127) (THERMOTRONIC automatic climate control ).
or
X Press the K or I button.
Defrosting the windshield
You can use this function to defrost the windshield or to defrost the inside of the windshield and the side windows.
Switch off the "defrosting" function as soon as the windshield is clear again.
MAX COOL maximum cooling
The MAX COOL function is only available in vehicles for the USA.
MAX COOL is only operational when the engine is running.
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132
Operating the climate control systems
X To activate: press the Ù button.
The indicator lamp in the button lights up.
X To activate: press off-road button Ù again.
The indicator lamp goes out. The previously selected settings are restored.
When you activate MAX COOL, climate control switches to the following functions:
R maximum cooling
R maximum airflow
R air-recirculation mode on the rear window defroster switches off automatically after several minutes.
If the battery voltage is too low, the rear window defroster may switch off.
X Turn the SmartKey to position 2 in the ignition lock.
X Press the ¤ button.
The indicator lamp in the ¤ button lights up or goes out.
Defrosting the windows
Windows fogged up on the inside
X
X
Activate the ¿ cooling with air dehumidification function.
Activate automatic mode Ã.
X If the windows continue to fog up, activate the defrosting function ( Y page 131).
i You should only select this setting until the windshield is clear again.
Windows fogged up on the outside
X Press the _ button repeatedly until the
P or O symbol appears in the display.
i You should only select this setting until the windshield is clear again.
Rear window defroster
Activating/deactivating
G WARNING
Clear all windows of ice or snow before setting off. Otherwise, impaired visibility could endanger you and others.
The rear window defroster has a high current draw. You should therefore switch it off as soon as the rear window is clear. Otherwise,
Problems with the rear window defroster
The rear window defroster has deactivated prematurely or cannot be activated.
X Switch off any consumers that are not required, e.g. reading lamps or interior lighting.
When the battery is sufficiently charged, the rear window defroster is activated again automatically.
Activating/deactivating airrecirculation mode
G WARNING
At low outside temperatures, only switch over to air-recirculation mode for brief periods.
Otherwise, the windows could fog up, thus impairing visibility and endangering yourself and others. This may prevent you from observing the traffic conditions and thereby cause an accident.
You can deactivate the flow of fresh air if unpleasant odors are entering the vehicle from outside. The air already inside the vehicle will then be recirculated.
The operation of air-recirculation mode is the same for all control panels.
Setting the air vents
133
X
X
Turn the SmartKey to position 2 in the ignition lock.
To activate: press the g button.
The indicator lamp in the g button lights up.
i In the event of high pollution levels high outside temperatures, air-
1 or at recirculation mode is automatically activated. When air-recirculation mode is activated automatically, the indicator lamp above the g button does not light up.
Outside air is added after about
30 minutes.
X To deactivate: press the g button.
The indicator lamp in the g button goes out.
i Air-recirculation mode deactivates automatically:
R after approximately five minutes at outside temperatures below approximately 41 ‡ (5 †)
R after approximately five minutes if cooling with air dehumidification is deactivated
R after approximately 30 minutes at outside temperatures above approximately 41 ‡ (5 †)
X To activate: press the Ì button.
The indicator lamp in the Ì button lights up.
i The blower will run at a low speed regardless of the airflow setting.
i If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.
X To deactivate: press the Ì button.
The indicator lamp in the Ì button goes out.
i It is possible that the residual heat function may be activated automatically an hour after the SmartKey is removed. The vehicle is then ventilated for 30 minutes to dry the air-conditioning system.
Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
Activating/deactivating the residual heat function
The residual heat function is only available in vehicles for Canada with automatic climate control.
It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the temperature that has been set.
Setting the air vents
Important safety notes
G WARNING
Very hot or very cold air can flow from the air vents. This could cause burns or frostbite to bare skin in the immediate vicinity of the vents. Keep bare skin away from these air vents. If necessary, direct the airflow away to a different area of the vehicle interior.
In order to ensure the direct flow of fresh air through the air vents into the vehicle interior, please observe the following notes:
R keep the air inlet between the windshield and the hood free of blockages, such as ice, snow or leaves.
R never cover the air vents or air intake grilles in the vehicle interior.
1 Automatic climate control only.
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134
Setting the air vents
Setting the center air vents
temperature-sensitive items stored in the glove box could be damaged.
: Center air vent, left
; Center air vent, right
= Center vent thumbwheel, right
? Center vent thumbwheel, left
X To open/close: turn thumbwheels = and ? up or down.
Setting the side air vents
:
;
Air vent thumbwheel
Air vent
When automatic climate control is activated, the glove box can be ventilated, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings.
X To open/close: turn thumbwheel : clockwise or counter-clockwise.
X To open/close: turn thumbwheel = up or down.
i Side window defroster vent : is only open when side air vent ; is open.
Setting the glove box air vent
! Close the air vent when heating the vehicle.
At high outside temperatures, open the air vent and activate the "cooling with air dehumidification" function. Otherwise,
Setting the rear-compartment air vents
Setting the center vents in the rear compartment
Setting the air vents
135
:
;
=
?
Rear-compartment air vent thumbwheel
Rear-compartment air vent, right
Rear control panel, only with automatic climate control 2
Rear-compartment air vent, left
X To open/close: turn thumbwheel : up or down.
2 Only for Canada.
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136
Useful information ............................ 138
Breaking-in notes .............................. 138
Driving ............................................... 138
Automatic transmission ................... 146
Refueling ............................................ 154
Parking ............................................... 157
Driving tips ........................................ 159
Driving systems ................................ 165
137
