2017 VOLKSWAGEN TOUAREG radar sensor

Front view

Fig. 2 Vehicle front overview.
Key to fig. 2:
(1) Power sunroof
(2) Windshield area with:
– Rain sensor on mirror base
– Low-light sensor on mirror base
– Dynamic high beam control on mirror base
– Windshield wipers
(3) Engine hood release
(4) Headlights (on both left and right) ,
(5) Headlight washers (on left and right)
(6) Threaded hole for the front towing eye (on both left and right) behind covers
(7) Sensors for front Park Distance Control (on both left and right)
(8) Fog lights/static cornering lights (on both left and right)
(9) Radar sensors for the adaptive cruise control (ACC) (on both left and right)
(10) Camera for Area View

Rear view

Fig. 3 Vehicle rear overview.
Key to fig. 3:
(1) Roof antenna for:
– Mobile phone
– Navigation
(2) High-mounted brake light
(3) Rear window with:
– Rear window defroster
– Rear window wiper
(4) Taillights (on both left and right)
(5) Area of:
– Button to open the rear hatch
– Rear Assist camera and the Area View camera
– License plate lighting
(6) Radar sensors for Side Assist
(7) Sensors for rear Park Distance Control
(8) Threaded hole for the rear towing eye (on both left and right) behind covers
(9) Trailer hitch/ball mount receiver

Lights
up Possible cause ⇒  Proper response
E
Adaptive Cruise Control
(ACC) is not active, the sys-
tem is on but not regulating
or holding speed.
-

When the ignition is switched on, several warning and indicator lights come on briefly for a function check. They go out after a few seconds.
WARNING
Failure to heed warning lights and instrument cluster text messages can cause the vehicle to break down in traffic and result in a collision and serious personal injury.
x Never ignore warning lights or text WARNINGS.
x Always stop the vehicle as soon as it is safe to do so.
NOTICE
Failure to heed warning lights or text WARNINGS can result in vehicle damage.
Radar sensors, ultrasonic sensors and Front Assist camera

Fig. 271 Vehicle front view: Sensors and camera

There are 2 radar sensors next to the fog lights on the vehicle front (3). These can detect moving vehicles up to 590 ft (180 m) in front of your vehicle.
The areas of the sensors (2) and (3) and the camera (1) must not be spray painted on or covered by stickers or other objects, since this can lead to a malfunction of the Adaptive Cruise Control (ACC) and the Front Assist system.
NOTICE
If you notice that Adaptive Cruise Control (ACC) or Front Assist doesn't work properly or the sensors are damaged, switch off ACC immediately.
x Go see an authorized Volkswagen dealer or Volkswagen Service Facility for assistance and have the ACC system checked.
x The sensors can be damaged or become misaligned in low speed impacts and parking maneuvers. Damaged or misaligned sensors can cause ACC or Front Assist to malfunction.
x To help make sure that the system works properly, always keep the sensors clean, free of snow and ice; do not cover the sensors with stickers or other objects.
x When cleaning the sensors with power washers or steam cleaners, only spray the sensors directly for a very short time, and always keep the washer nozzle at least 4 inches (10 cm) from the sensors.
x For Declaration of Compliance to United States FCC and Industry Canada regulations
Always keep the area of the Front Assist camera clear of ice and snow.
Switching ACC on and off

Fig. 272 On the steering wheel column: Lever for Adaptive Cruise Control.

Fig. 273 Lever for Adaptive Cruise Control: Setting the distance (time intervals)

WARNING
Improper use of the Adaptive Cruise Control can cause collisions, other accidents and seri-ous personal injury.
x Always remember that the Adaptive Cruise Control has limits – it will not slow the vehicle down or maintain the set distance when you drive towards an obstacle or something on or near the road that is not moving, such as vehicles stopped in a traffic jam, a stalled or disa-bled vehicle.
x Always remember that the Adaptive Cruise Control cannot detect a vehicle that is driving towards you in your traffic lane and that it cannot detect narrow vehicles such as motorcy-cles and bicycles.
x Never drive at speeds that are too fast for traffic, road and weather conditions.
x Never follow a vehicle so closely that you cannot stop your vehicle safely. The Adaptive Cruise Control cannot slow or brake the vehicle safely when you follow another vehicle too closely. Always remember that the Adaptive Cruise Control has a braking power that is only about 30% of the vehicle's maximum braking ability, the automatic braking function cannot bring the vehicle to a stop.
x Never use Adaptive Cruise Control when you cannot drive safely at a steady speed, in-cluding on city streets, on winding roads or when road conditions are poor (for example, on ice, gravel, in fog, heavy rain or on wet roads that increase the risk of hydroplaning).
x The radar sensor's vision can be reduced by rain, snow and heavy road spray. These and similar conditions can prevent vehicles up ahead from being accurately detected and in some cases they may not be detected at all. Do not use ACC when the radar sensors cannot accu-rately detect vehicles moving ahead of you in traffic.
x Always turn off Adaptive Cruise Control when entering turn lanes, exit lanes and construc-tion zones or in similar situations because the vehicle will automatically accelerate to the stored speed when the road ahead is clear.
x Never rest your foot on the accelerator pedal, especially when the Adaptive Cruise Control is being used because doing so will override the braking function.
x Always pay attention to traffic, especially when Adaptive Cruise Control is switched on.
x Always maintain a safe speed and distance between your vehicle and other vehicles while considering the traffic situation. This is the duty of the driver. Adaptive Cruise Control is merely an aid to the driver.
x To prevent unintended operation, always switch ACC off when it is not being used.
x It is dangerous to use the “Resume” feature when the previously set speed is too high for existing road, traffic or weather conditions.
x Always select a speed and distance to traffic ahead that is safe and appropriate under the prevailing traffic, road, weather and lighting conditions.
x Never allow the closing speed between you and other vehicles to be so high that the Adaptive Cruise Control may not be able to slow your vehicle safely. If closing speed is too high, you must apply the brakes yourself to reduce the risk of a rear-end crash.
NOTICE
When the vehicle is driving at speeds lower than 20 mph (30 km/h) and the 3%4 button is pressed or the lever is moved to 2%35-%, the vehicle will be accelerated to the lowest possible speed that can be set in ACC of 20 mph (30 km/h)
The stored speed is canceled when the ignition or the ACC is switched off.

WARNING
The Forward Collision Warning system (Front Assist) technology cannot overcome the laws of physics and system-related limits. The driver is always responsible for braking in time. If the Forward Collision Warning system issues a warning, immediately apply the brake to slow the vehicle down or avoid the obstacle, depending on the traffic situation.
x Always adjust your speed and driving style to road, traffic, weather, and visibility condi-tions.
x The Forward Collision Warning system cannot prevent accidents and serious injuries on its own.
x The Forward Collision Warning system can issue unnecessary warnings in certain com-plex driving situations, for example, at traffic islands.
x The Forward Collision Warning system can issue unnecessary warnings when its function is impaired, for example, if the radar sensor is dirty or if the position of the radar sensor has been changed.
x The Forward Collision Warning system does not react to people, animals, or vehicles crossing or approaching in the same lane.
x Always be prepared to take full control of the vehicle at all times.
NOTICE
If you notice that the Forward Collision Warning system (Front Assist) doesn't work properly or the sensors are damaged, switch off the Forward Collision Warning system (Front Assist) immediately.
x Go see an authorized Volkswagen dealer or Volkswagen Service Facility for assistance and have the Forward Collision Warning system (Front Assist) checked.
If the Forward Collision Warning system (Front Assist) initiates a braking maneuver, the hydraulic braking system is under pressure. In this case the braking pedal will feel “harder” and the brake pedal travel will be shorter.
Automatic braking maneuvers can be interrupted by depressing the gas pedal or moving the steering wheel.
Deactivate the Forward Collision Warning system if it does not work as described in this chapter, for example, if multiple unwanted warnings occur. Have the system checked by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
Temporarily switch off the Forward Collision Warning system (Front
Assist) in the following situations

x If the radar sensor malfunctions.
x If external force has affected the radar sensor, for example, after a rear-end collision.
x If the radar sensor is covered (even temporarily) by any accessories or other equipment, for exam-ple, auxiliary headlights.
x If the vehicle is being loaded onto a truck, ferry, or train.
WARNING
Failure to switch off the Forward Collision Warning system in the situations mentioned can cause accidents and serious personal injury.
Forward Collision Warning system (Front Assist) system limits

The Autonomous Emergency Braking function should be deactivated by switching off the Forward Collision Warning system (Front Assist) in following situations:
x When the vehicle is being towed.
x When the vehicle is on a roller test stand.
x When the vehicle is off road, like on construction sites or on race tracks.
x When one of the sensors is defect.
x When the sensors have been damaged, like after a frontal collision accident.
x After several false alarms in a row.
x If the sensors are covered by additional parts, like auxiliary headlights.
x If the vehicle is driving on steep terrain or on or across slopes.
WARNING
Always remember that the Autonomous Emergency Braking function has limits – it will not release you from the responsibility to control and slow down your vehicle.
x The Autonomous Emergency Braking function alone cannot avoid accidents and fatal injuries.
x Under certain circumstances and complex traffic situations the Autonomous Emergency Braking function can perform unwanted braking maneuvers, like in construction sites.
x Soiled or misaligned radar sensors can lead to unwanted braking maneuvers
x The Autonomous Emergency Braking function does not react to people, animals, crossing traffic or vehicles that are approaching you on the same lane.
x Always adjust your speed and the distance you keep between you and the vehicles ahead of you to the road, traffic, weather, and visibility conditions.
x Never follow a vehicle so closely that you cannot stop your vehicle safely, under certain circumstances the automatic braking function cannot bring the vehicle to a stop in time.
x Never allow the closing speed between you and other vehicles to be so high that the Au-tonomous Emergency Braking function may not be able to slow your vehicle safely. If closing speed is too high, you must apply the brakes yourself to reduce the risk of a rear-end crash.
x Always be prepared to takeover the control of the brake and the gas pedal in every situa-tion.
NOTICE
If you notice that the Autonomous Emergency Braking function doesn't work properly or the sensors are damaged, switch off the Forward Collision Warning system (Front Assist) and therefore the Autonomous Emergency Braking function immediately.
x Go see an authorized Volkswagen dealer or Volkswagen Service Facility for assistance and have the system checked.
If the Autonomous Emergency Braking function initiates a braking maneuver, the hydraulic brak-ing system is under pressure. In this case the braking pedal will feel “harder” and the brake pedal travel will be shorter.
Automatic braking maneuvers can be interrupted by depressing the gas pedal or moving the steering wheel.
The Autonomous Emergency Braking function can slow your vehicle down to a standstill, but not hold your vehicle permanently. When necessary, apply the vehicle brakes!