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4-5. Using the driving support systems
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■ Conditions in which functions may not operate properly
In the following situations, the camera sensor may not detect white (yellow) lines and various functions may not operate normally.
● There are shadows on the road that run parallel with, or cover, the white
(yellow) lines.
● The vehicle is driven in an area without white (yellow) lines, such as in front of a tollgate or checkpoint, or at an intersection, etc.
● The white (yellow) lines are cracked, “Botts’ dots”, “Raised pavement marker” or stones are present.
● The white (yellow) lines cannot be seen or are difficult to see due to sand, etc.
● The vehicle is driven on a road surface that is wet due to rain, puddles, etc.
● The traffic lines are yellow (which may be more difficult to recognize than lines that are white).
● The white (yellow) lines cross over a curb, etc.
● The vehicle is driven on a bright surface, such as concrete.
● The vehicle is driven on a surface that is bright due to reflected light, etc.
● The vehicle is driven in an area where the brightness changes suddenly, such as at the entrances and exits of tunnels, etc.
● Light from the headlights of an oncoming vehicle, the sun, etc., enters the camera.
● The vehicle is driven where the road diverges, merges, etc.
● The vehicle is driven on a slope.
● The vehicle is driven on a road which tilts left or right, or a winding road.
● The vehicle is driven on an unpaved or rough road.
● The vehicle is driven around a sharp curve.
● The traffic lane is excessively narrow or wide.
● The vehicle is extremely tilted due to carrying heavy luggage or having improper tire pressure.
● The distance to the preceding vehicle is extremely short.
● The vehicle is moving up and down a large amount due to road conditions during driving (poor roads or road seams).
● The headlight lenses are dirty and emit a faint amount of light at night, or the beam axis has deviated.
● The vehicle has just changed lanes or crossed an intersection.
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■ Warning message
If the following warning message is displayed on the multi-information display, follow the appropriate troubleshooting procedure.
Warning messages are used to indicate a system malfunction or to inform the driver of the need for caution while driving. ( →
■ Customization
The following settings can be changed.
Function
Lane departure alert function
Vehicle sway warning
Setting details
Adjust alert sensitivity
Turn function on and off
Adjust alert sensitivity
For how to change settings, refer to P. 652.
4-5. Using the driving support systems
Dynamic radar cruise control
∗
257
Summary of functions
2
3
4
5
1
In vehicle-to-vehicle distance control mode, the vehicle automatically accelerates and decelerates to match the speed changes of the preceding vehicle even if the accelerator pedal is not depressed. In constant speed control mode, the vehicle runs at a fixed speed.
Use the dynamic radar cruise control on freeways and highways.
● Vehicle-to-vehicle distance control mode ( →
● Constant speed control mode ( →
Vehicle-to-vehicle distance switch
Display
Indicators
Set speed
Cruise control switch
4
∗
: If equipped
258
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WARNING
■ Before using dynamic radar cruise control
Driving safely is the sole responsibility of the driver. Do not rely solely on the system, and drive safely by always paying careful attention to your surroundings.
The dynamic radar cruise control provides driving assistance to reduce the driver’s burden. However, there are limitations to the assistance provided.
Set the speed appropriately depending on the speed limit, traffic flow, road conditions, weather conditions, etc. The driver is responsible for checking the set speed.
Even when the system is functioning normally, the condition of the preceding vehicle as detected by the system may differ from the condition observed by the driver. Therefore, the driver must always remain alert, assess the danger of each situation and drive safely. Relying on this system or assuming the system ensures safety while driving can lead to an accident, resulting in death or serious injury.
■ Cautions regarding the driving assist systems
Observe the following precautions, as there are limitations to the assistance provided by the system.
Failure to do so may cause an accident resulting in death or serious injury.
● Assisting the driver to measure following distance
The dynamic radar cruise control is only intended to help the driver in determining the following distance between the driver’s own vehicle and a designated vehicle traveling ahead. It is not a mechanism that allows careless or inattentive driving, and it is not a system that can assist the driver in low-visibility conditions. It is still necessary for driver to pay close attention to the vehicle’s surroundings.
● Assisting the driver to judge proper following distance
The dynamic radar cruise control determines whether the following distance between the driver’s own vehicle and a designated vehicle traveling ahead is within a set range. It is not capable of making any other type of judgement. Therefore, it is absolutely necessary for the driver to remain vigilant and to determine whether or not there is a possibility of danger in any given situation.
● Assisting the driver to operate the vehicle
The dynamic radar cruise control has limited capability to prevent or avoid a collision with a vehicle traveling ahead. Therefore, if there is ever any danger, the driver must take immediate and direct control of the vehicle and act appropriately in order to ensure the safety of all involved.
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WARNING
■ To avoid inadvertent dynamic radar cruise control activation
Switch the dynamic radar cruise control off using the “ON-OFF” button when not in use.
■ Situations unsuitable for dynamic radar cruise control
Do not use dynamic radar cruise control in any of the following situations.
Doing so may result in inappropriate speed control and could cause an accident resulting in death or serious injury.
● Roads where there are pedestrians, cyclists, etc.
● In heavy traffic
● On roads with sharp bends
● On winding roads
● On slippery roads, such as those covered with rain, ice or snow
● On steep downhills, or where there are sudden changes between sharp up and down gradients
Vehicle speed may exceed the set speed when driving down a steep hill.
● At entrances to freeways and highways
● When weather conditions are bad enough that they may prevent the sensors from detecting correctly (fog, snow, sandstorm, heavy rain, etc.)
● When there is rain, snow, etc., on the front surface of the radar sensor or camera sensor
● In traffic conditions that require frequent repeated acceleration and deceleration
● When your vehicle is towing a trailer or during emergency towing
● When an approach warning buzzer is heard often
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Driving in vehicle-to-vehicle distance control mode
This mode employs a radar sensor to detect the presence of vehicles up to approximately 328 ft. (100 m) ahead, determines the current vehicle-to-vehicle following distance, and operates to maintain a suitable following distance from the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on downhill slopes.
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1
2
3
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-tovehicle distance can also be set by operating the vehicle-to-vehicle distance switch.
Example of deceleration cruising and follow-up cruising
When a preceding vehicle driving slower than the set speed appears
When a vehicle is detected running ahead of you, the system automatically decelerates your vehicle. When a greater reduction in vehicle speed is necessary, the system applies the brakes (the stop lights will come on at this time). The system will respond to changes in the speed of the vehicle ahead in order to maintain the vehicle-to-vehicle distance set by the driver.
Approach warning warns you when the system cannot decelerate sufficiently to prevent your vehicle from closing in on the vehicle ahead.
Example of acceleration
When there are no longer any preceding vehicles driving slower than the set speed
The system accelerates until the set speed is reached. The system then returns to constant speed cruising.
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Setting the vehicle speed (vehicle-to-vehicle distance control mode)
1 Press the “ON-OFF” button to activate the cruise control.
Radar cruise control indicator will come on and a message will be displayed on the multi-information display.
Press the button again to deactivate the cruise control.
If the “ON-OFF” button is pressed and held for 1.5 seconds or more, the system turns on in constant speed control mode. ( →
2 Accelerate or decelerate, with accelerator pedal operation, to the desired vehicle speed (at or above approximately 30 mph
[50 km/h]) and push the lever down to set the speed.
Cruise control “SET” indicator will come on.
The vehicle speed at the moment the lever is released becomes the set speed.
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Adjusting the set speed
1
2
To change the set speed, operate the lever until the desired set speed is displayed.
Increases the speed
Decreases the speed
Fine adjustment: Momentarily move the lever in the desired direction.
Large adjustment: Hold the lever up or down to change the speed, and release when the desired speed is reached.
In the vehicle-to-vehicle distance control mode, the set speed will be increased or decreased as follows:
For the U.S. mainland, Hawaii
Fine adjustment: By 1 mph (1.6 km/h) the lever is operated
* 1
or 1 km/h (0.6 mph)
* 2
each time
Large adjustment: Increases or decreases in 1 mph (1.6 km/h)
* 1
or 1 km/h
(0.6 mph)
* 2
increments for as long as the lever is held
For Canada, Puerto Rico, Guam, Saipan, Samoa, Costa Rica and NATO Germany
Fine adjustment: By 1 mph (1.6 km/h)
* 1
or 1 km/h (0.6 mph)
* 2
each time the lever is operated
Large adjustment: Increases or decreases in 5 mph (8 km/h)
(3.1 mph)
* 2
increments for as long as the lever is held
* 1
or 5 km/h
In the constant speed control mode ( →
P. 266), the set speed will be
increased or decreased as follows:
Fine adjustment: By 1 mph (1.6 km/h)
* 1
or 1 km/h (0.6 mph)
* 2
each time the lever is operated
Large adjustment: The speed will continue to change while the lever is held.
* 1
: When the set speed is shown in “MPH”
* 2
: When the set speed is shown in “km/h”
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Changing the vehicle-to-vehicle distance (vehicle-to-vehicle distance control mode)
1
Pressing the switch changes the vehicle-to-vehicle distance as follows:
Long
2 Medium
3 Short
Preceding vehicle mark
The vehicle-to-vehicle distance is set automatically to long mode when the engine switch is turned to the “ON” position (vehicles without a smart key system) or the IGNI-
TION ON mode (vehicles with a smart key system).
If a vehicle is running ahead of you, the preceding vehicle mark will also be displayed.
Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance control mode)
Select a distance from the table below. Note that the distances shown correspond to a vehicle speed of 50 mph (80 km/h). Vehicle-to-vehicle distance increases/decreases in accordance with vehicle speed.
Distance options
Long
Medium
Short
Vehicle-to-vehicle distance
Approximately 160 ft. (50 m)
Approximately 130 ft. (40 m)
Approximately 100 ft. (30 m)
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Canceling and resuming the speed control
1 Pulling the lever toward you cancels the speed control.
2
Vehicle-to-vehicle distance control mode: The speed control is also canceled when the brake pedal is depressed.
Constant speed control mode: The speed setting is also canceled when the brakes are applied or the clutch pedal (manual transmission only) is depressed.
Pushing the lever up resumes the cruise control and returns vehicle speed to the set speed.
However, cruise control does not resume when the vehicle speed is approximately 25 mph (40 km/h) or less.
Approach warning (vehicle-to-vehicle distance control mode)
When your vehicle is too close to a vehicle ahead, and sufficient automatic deceleration via the cruise control is not possible, the display will flash and the buzzer will sound to alert the driver. An example of this would be if another driver cuts in front of you while you are following a vehicle.
Depress the brake pedal to ensure an appropriate vehicle-tovehicle distance.
■ Warnings may not occur when
In the following instances, warnings may not occur even when the vehicle-to-vehicle distance is small.
● When the speed of the preceding vehicle matches or exceeds your vehicle speed
● When the preceding vehicle is traveling at an extremely slow speed
● Immediately after the cruise control speed was set
● When depressing the accelerator pedal
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Selecting constant speed control mode
1
When constant speed control mode is selected, your vehicle will maintain a set speed without controlling the vehicle-to-vehicle distance.
Select this mode only when vehicle-to-vehicle distance control mode does not function correctly due to a dirty radar sensor, etc.
2
With the cruise control off, press and hold the “ON-OFF” button for 1.5 seconds or more.
Immediately after the “ON-OFF” button is pressed, the radar cruise control indicator will come on.
Afterwards, it switches to the cruise control indicator.
Switching to constant speed control mode is only possible when operating the lever with the cruise control off.
Accelerate or decelerate, with accelerator pedal operation, to the desired vehicle speed (at or above approximately 25 mph
[40 km/h]) and push the lever down to set the speed.
Cruise control “SET” indicator will come on.
The vehicle speed at the moment the lever is released becomes the set speed.
Adjusting the speed setting: →
Canceling and resuming the speed setting: →
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■ Dynamic radar cruise control can be set when
● Vehicles with an automatic transmission: The shift lever is in D or range 4 or higher of S has been selected.
● Vehicle speed is at or above approximately 30 mph (50 km/h).
■ Accelerating after setting the vehicle speed
The vehicle can accelerate by operating the accelerator pedal. After accelerating, the set speed resumes. However, during vehicle-to-vehicle distance control mode, the vehicle speed may decrease below the set speed in order to maintain the distance to the preceding vehicle.
■ Automatic cancelation of vehicle-to-vehicle distance control mode
Vehicle-to-vehicle distance control mode is automatically canceled in the following situations.
● Actual vehicle speed falls at or below approximately 25 mph (40 km/h).
● VSC is activated.
● TRAC is activated for a period of time.
● When the VSC or TRAC system is turned off.
● The sensor cannot detect correctly because it is covered in some way.
● Pre-collision braking is activated.
● 4WD models: The operation cannot be switched for 5 seconds or more after operating the front-wheel drive control switch.
If vehicle-to-vehicle distance control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Toyota dealer.
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■ Automatic cancelation of constant speed control mode
Constant speed control mode is automatically canceled in the following situations:
● Actual vehicle speed is more than approximately 10 mph (16 km/h) below the set vehicle speed.
● Actual vehicle speed falls below approximately 25 mph (40 km/h).
● VSC is activated.
● TRAC is activated for a period of time.
● When the VSC or TRAC system is turned off.
● Pre-collision braking is activated.
● 4WD models: The operation cannot be switched for 5 seconds or more after operating the front-wheel drive control switch.
If constant speed control mode is automatically canceled for any other reason, there may be a malfunction in the system. Contact your Toyota dealer.
■ Brake system operation sound
If the brakes are applied automatically while the vehicle is in vehicle-to-vehicle distance control mode, a brake system operation sound may be heard from the engine compartment. This does not indicate a malfunction.
■ Warning messages and buzzers for dynamic radar cruise control
Warning messages and buzzers are used to indicate a system malfunction or to inform the driver of the need for caution while driving. If a warning message is shown on the multi-information display, read the message and follow the instructions.
■ When the sensor may not be correctly detecting the vehicle ahead
In the case of the following and depending on the conditions, operate the brake pedal when deceleration of the system is insufficient or operate the accelerator pedal when acceleration is required.
As the sensor may not be able to correctly detect these types of vehicles, the approach warning ( →
● Vehicles that cut in suddenly
● Vehicles traveling at low speeds
● Vehicles that are not moving in the same lane
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