2017-2020 Volkswagen Golf 4 Door Driver assistance systems -> Forward Collision Warning (Front Assist) User Manual
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Driver assistance systems -> Forward Collision Warning (Front Assist) for Your Volkswagen Golf 4 Door Seventh Generation (2017-2020)

Metal objects on the road, such as tracks or metal plates, can lead to unwanted reactions of the system, such as abrupt braking maneuvers.  
Possible radar sensor function impairments  
If the radar sensor function is impaired by heavy rain, spray, snow or mud, Adaptive Cruise Control switches off temporarily. A driver information message appears  
in the instrument cluster display. Clean the radar sensors as required.  
The Adaptive Cruise Control will automatically be available again as soon as the radar sensor is working properly. The message in the instrument cluster display  
switches off, and the Adaptive Cruise Control can be reactivated.  
Strong reflected radiation of the radar signal, for example, in multilevel parking structures, can impair the function of the radar sensor.  
Overheated brakes  
Adaptive Cruise Control may switch off temporarily if the brakes overheat significantly, for example from braking maneuvers or driving down steep slopes. A driver  
information message appears in the instrument cluster display. Adaptive Cruise Control cannot be activated.  
Adaptive Cruise Control can be activated again once the temperature of the brakes decreases sufficiently. The message in the instrument cluster display switches  
off. If the message does not go out for a long time, there is a fault.  
If the message ACC not available does not switch off, there is a malfunction. Contact your authorized Volkswagen dealer or authorized Volkswagen Service  
Facility.  
Trailer towing  
When towing a trailer, ACC and Front Assist may work only with limited functionality.  
WARNING  
If ACC brings your vehicle to a complete stop before the system prompts you to brake and the stationary vehicle ahead starts moving, your vehicle will also  
start moving automatically. In some cases the radar sensor may be unable to detect obstacles in the vehicle's path. This can result in serious injury and  
accidents.  
Always check the road ahead before the vehicle pulls away. If necessary, cancel the pulling away procedure by depressing the brake pedal.  
WARNING  
The view of the radar sensor can be impaired by rain, snow or heavy spray. Under certain circumstances, this could result in the vehicle ahead being detected  
inadequately or not at all. Take over yourself if necessary!  
Switch Adaptive Cruise Control off when driving through tunnels because the function of the system could be impaired.  
Adaptive Cruise Control distance regulation will not work if the sensors are covered by heavy rain, spray, snow, etc. A driver information message appears  
in the instrument cluster display.  
Adaptive Cruise Control switches off temporarily if the brakes overheat too much. ACC not available appears in the instrument cluster display.  
Forward Collision Warning (Front Assist)  
Introduction to the subject  
In this chapter you will find information on the following subjects:  
⇒ Driver warnings and Autonomous Emergency Braking ꢀ  
⇒ Radar sensorꢀ  
⇒ Using Front Assistꢀ  
⇒ When to temporarily deactivate Front Assist ꢀ  
⇒ Pedestrian Monitoringꢀ  
⇒ System limitsꢀ  
Depending on vehicle equipment, the vehicle may be equipped with Forward Collision Warning (Front Assist), which includes Autonomous Emergency Braking and  
Pedestrian Monitoring.  
The Forward Collision Warning system, when switched on, uses a radar sensor to help prevent rear-end collisions by providing a warning of a possible collision with  
a vehicle on the road ahead within physical and technical limits of the system.  
When Front Assist is switched on, the Autonomous Emergency Braking system can automatically apply the brakes within the Front Assist speed range to help  
minimize the effects of a collision.  
The Front Assist system is not a substitute for the driver's full concentration.  
186  
WARNING  
The Front Assist system technology cannot overcome the laws of physics and system-related limits. Do not allow the increased convenience Front Assist can  
provide tempt you into taking extra risks. The driver is always responsible for braking in time. If the Front Assist system issues a warning, immediately apply  
the brake to slow the vehicle down or avoid the obstacle, depending on the traffic situation.  
Always adjust your speed and driving style to road, traffic, weather, and visibility conditions.  
The Front Assist system cannot prevent accidents and serious injuries on its own.  
The Front Assist system can issue unnecessary warnings in certain complex driving situations, for example, when driving in tight curves.  
The Front Assist 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.  
The Front Assist system does not react to animals or vehicles crossing or approaching in the same lane.  
If you are unsure if your vehicle has Pedestrian Monitoring, please contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility  
before you start driving.  
Always be prepared to take full control of the vehicle at all times.  
WARNING  
Failure to heed warning lights and instrument cluster text messages can result in a collision and serious personal injury.  
Never ignore warning lights or text WARNINGS.  
NOTE  
If you notice that Front Assist doesn't work properly or the sensor is damaged, switch off Front Assist immediately.  
See an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance and have the Front Assist system checked.  
If Front Assist initiates a braking maneuver, the braking system is under pressure. In this case the brake pedal will feel harder.  
Automatic braking maneuvers can be interrupted by depressing the gas pedal, or by moving the steering wheel.  
Deactivate the Front Assist system if it does not work as described in this chapter, for example, if multiple unwanted warnings or braking maneuvers occur.  
Have the system checked by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
When the Front Assist system is switched on, the instrument cluster display can be overwritten by displays related to other functions, for example, an incoming  
telephone call.  
The Autonomous Emergency Braking system can slow your vehicle down to a standstill, but not hold your vehicle permanently. If necessary, apply the vehicle  
brakes!  
Front Assist is automatically deactivated when ASR is switched off.  
Certain settings can be saved in the personalized user profiles ⇒ Personalized user profilesꢀ.  
Driver warnings and Autonomous Emergency Braking  
Fig. 131 In the instrument cluster display: Advance warning (symbol displayed in color on an instrument cluster with color display).  
Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ  
Distance warning  
187  
If the vehicle is traveling within a speed range of about 40–155 mph (65–250 km/h), the system warns the driver with the  
symbol in the instrument cluster  
display if it detects that the vehicle is driving too close to the vehicle ahead ⇒ ꢀ. No acoustic warning will sound.  
The warning period varies according to the traffic situation and your driving style.  
Increase the distance between your vehicle and the vehicle ahead.  
Advance warning  
If the vehicle is traveling within a speed range of about 18–155 mph (30–250 km/h), the system warns the driver with a warning chime and a message in the  
instrument cluster display (⇒ Fig. 131ꢀ) if it detects a possible collision with a vehicle or a crossing pedestrian ahead  
The warning period varies according to the traffic situation and your driving style.  
Brake or take action to avoid the vehicle ahead!  
⇒
ꢀ.  
However, do not rely solely on Front Assist. Under certain conditions, the reactions of Front Assist may be unexpected or delayed from the driver's viewpoint. Alway  
pay attention and take over if necessary ⇒ ꢀ.  
Immediate warning  
If you fail to react accordingly to the advance warning within a speed range of about 18–155 mph (30–250 km/h), Front Assist may initiate a short active braking  
maneuver. In this case you will notice brief, jerky braking of the vehicle to warn you of an impending collision.  
The moment of this alert can vary, depending on the traffic situation and the driving behavior.  
Autonomous Emergency Braking  
If you should also fail to react to the immediate warning, within a speed range of about 3–155 mph (5–250 km/h), Front Assist can initiate an automatic braking  
maneuver that will abruptly decelerate the vehicle with elevated braking force. The emergency braking maneuver occurs shortly before a potential collision to  
reduce vehicle speed and help to minimize the effects of a collision.  
Autonomous Emergency Braking below 18 mph (30 km/h)  
In case of an impending collision, within a speed range of about 3–18 mph (5–30 km/h), Front Assist can initiate an automatic braking maneuver without the  
advance or immediate warnings to reduce vehicle speed and help to minimize the effects of a collision ⇒ ꢀ.  
The automatic braking maneuver occurs simultaneously with a warning in the instrument cluster display ⇒ Fig. 131ꢀ.  
Braking support  
Front Assist can help to minimize the effects of a collision by providing additional braking force in case of an emergency braking situation within a speed range of  
about 3–155 mph (5–250 km/h), should the system detect that the force applied to the brake pedal by the driver is not sufficient to avoid a collision. In order for  
Front Assist to provide this additional braking assistance, it must have detected an impending collision with another vehicle ahead of yours and the brake pedal has  
to be hit hard and suddenly. However, this support only works as long as the brake pedal is depressed.  
Front Assist considers the driver's response time to give warnings in time. This response time decreases automatically when the system, for example, detects  
movement of the accelerator or steering wheel. The system thus prevents unnecessary brake interventions, for example, when the driver passes another vehicle.  
Front Assist cannot react when approaching standing objects ahead of you, for example, when driving up to a line of stopped vehicles in heavy traffic.  
System deactivated  
If the system is switched off, a text message and the  
symbol appear in the instrument cluster display. The yellow central caution light  
may also light up.  
Radar sensor  
Fig. 132 Behind the Volkswagen emblem: Radar sensor Ⓐ and area around the radar sensor to be kept clean and free of obstructions Ⓑ.  
Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ  
A radar sensor behind the Volkswagen emblem monitors traffic ⇒ Fig. 132Ⓐꢀ and can detect vehicles traveling ahead.  
The radar sensor function can be impaired by things such as mud, slush, or snow, or by conditions such as heavy rain or spray. In cases like these, Front Assist wil  
not work. The driver message Front Assist: no sensor view! appears in the instrument cluster display. Clean the radar sensor as required ꢀ.  
⇒
188  
The Front Assist system will automatically be available again as soon as the radar sensor is no longer impaired. The message in the instrument cluster display  
turns off.  
The function of the Front Assist system can also be impaired when the radar signal radiation is reflected, for example, in multilevel parking structures, or by nearby  
metallic objects such as rails or metal plates in the road.  
The area in front of and around the radar sensor ⇒ Fig. 132Ⓑꢀ must not be covered by objects such as stickers, additional headlights, non-standard license plate  
brackets, or other things, as these items can impair the function of the Front Assist system.  
Any structural modifications to the vehicle, for example, lowering the vehicle or alterations to the front end trim, can impair the function of the Front Assist system.  
Structural modifications should only be carried out by a qualified workshop ⇒ Parts, accessories, repairs, and modificationsꢀ. Contact an authorized Volkswagen  
dealer or an authorized Volkswagen Service Facility for assistance.  
The Volkswagen emblem affects the function of the radar sensor. Use the original Volkswagen emblem only.  
Incorrectly performed repairs to the front end of the vehicle can change the position of the radar sensor and therefore impair the function of the Front Assist system.  
Repair work should only be carried out by a qualified workshop. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility for  
assistance.  
NOTE  
Switch off the Front Assist system if you suspect that the radar sensor has been damaged or if its position has been changed. This can help prevent further  
damage. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility to have the radar sensor realigned.  
The radar sensor can become misaligned if it is hit, for example, when parking the vehicle. Readjusting the sensor could impair the performance of the  
system or cause it to switch off.  
Repairs to the radar sensor require special knowledge and tools. Contact an authorized Volkswagen dealer or an authorized Volkswagen Service Facility  
for assistance.  
Remove snow with a brush, and remove ice with a solvent-free deicer spray.  
A Declaration of Compliance with the United States FCC and Industry Canada regulations is found on ⇒ Declaration of Compliance, Telecommunications  
and Electronic Systemsꢀ.  
Using Front Assist  
Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ  
The Front Assist system and the advance warning are automatically active once the ignition is switched on ⇒ Starting and stopping the engineꢀ.  
The advance warning and distance warning are automatically switched off when the Front Assist system is switched off.  
Volkswagen recommends that the Front Assist system is switched on at all times, except in the specific situations described in this Manual ⇒ When to temporarily  
deactivate Front Assistꢀ.  
Turning Front Assist on or off  
You can turn Front Assist on or off in the Infotainment system by pressing the  
button followed by the Vehicle,  
, and Assistance systems function keys  
⇒ Infotainment system operation and displays ꢀ.  
OR: In the Assist systems menu in the instrument cluster display, select Front Assist⇒ Volkswagen Information Systemꢀ.  
OR: Press the driver assistance systems button on the turn signal lever (if equipped) and select Front Assist⇒ Driver assistance systems buttonꢀ.  
If the system is switched off, a text message and the  
The yellow central caution light may also light up.  
symbol appear in the instrument cluster display ⇒ Driver warnings and Autonomous Emergency Braking  
Turning the distance warning and advance warning on or off  
You can turn the distance warning and the advance warning on or off in the Infotainment system by pressing the  
button followed by the Vehicle,  
, and  
Assistance systems function keys ⇒ Infotainment system operation and displays ꢀ.  
Via this menu, you can also adjust the warning period for the advance warning to one of three settings:  
Early  
Medium  
Late  
Volkswagen recommends that the distance and advance warnings are switched on at all times.  
When to temporarily deactivate Front Assist  
189  
Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ  
Front Assist should be switched off in the following situations due to system limitations  
⇒
ꢀ:  
If the vehicle is being towed.  
If the vehicle is on a dynamometer test bed.  
If the vehicle is not being driven on public roads, for example, off-road or on a track.  
If the radar sensor malfunctions.  
If external force has affected the radar sensor, for example, after a rear-end collision.  
If the radar sensor is covered (even temporarily) by any accessories or other equipment, for example, auxiliary headlights.  
If the vehicle is being loaded onto a truck, ferry, or train.  
WARNING  
Failure to switch off Front Assist in the situations mentioned can cause accidents and serious personal injury.  
Pedestrian Monitoring  
Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ  
Your vehicle may be equipped with a Pedestrian Monitoring feature that can help prevent accidents with pedestrians crossing the street or help minimize the  
outcome of an accident.  
The system alerts you of an impending collision, prepares the vehicle for emergency braking, provides support when braking, or performs an automatic braking  
maneuver.  
If the system gives the driver an advanced warning, a message appears in the instrument cluster to warn the driver of an impending collision ⇒ Driver warnings a  
Autonomous Emergency Brakingꢀ.  
If the Front Assist system is switched on ⇒ Using Front Assistꢀ, then Pedestrian Monitoring is also active within a speed range of about 3–40 mph (5–65 km/h).  
WARNING  
The Pedestrian Monitoring technology cannot overcome the laws of physics and system-related limits. Never let the increased convenience provided by the  
Pedestrian Monitoring system tempt you into taking extra risks. The driver is always responsible for braking in time. If the Pedestrian Monitoring system issues  
a warning, immediately apply the brake to slow the vehicle down or avoid the pedestrian, depending on the traffic situation.  
Always adjust your speed, driving style, and the distance you keep between you and the vehicles ahead of you to the road, traffic, weather, and visibility  
conditions.  
The Pedestrian Monitoring system cannot prevent accidents and serious injuries on its own.  
The Pedestrian Monitoring system can issue unnecessary warnings in certain complex driving situations, for example, when driving in tight curves.  
The Pedestrian Monitoring system can issue unnecessary warnings or braking maneuvers when its function is impaired, for example, if the radar sensor is  
dirty or if the position of the radar sensor has been changed.  
The Pedestrian Monitoring system does not react to animals.  
Always be prepared to take full control of the vehicle at all times.  
Automatic braking maneuvers can be interrupted by depressing the accelerator pedal or by moving the steering wheel.  
Deactivate the Front Assist system if it does not work as described in this chapter, for example, if multiple unwanted warnings or braking maneuvers occur.  
Have the system checked by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.  
System limits  
Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ  
Front Assist has physical and system-related limits. The driver may therefore find that, in certain circumstances, some Front Assist reactions are unwanted or occur  
with a delay. You should therefore always be prepared to take full control of the vehicle whenever necessary.  
The following conditions can prevent Front Assist from reacting, or delay its ability to react:  
When driving in tight curves.  
190  
When the accelerator pedal is depressed.  
When Front Assist is switched off or if there is a fault.  
When the ASR is manually switched off.  
When the ESC is taking corrective action.  
When several brake lights on the vehicle or on a trailer connected to the vehicle electrical system are faulty.  
When the radar sensor is dirty or covered.  
When the vehicle is in Reverse (R).  
When the vehicle is quickly accelerating.  
When weather conditions are poor.  
When narrow vehicles, such as motorcycles, are moving in front of your vehicle.  
When vehicles are traveling slightly offset to the left or right in front of your vehicle.  
When vehicles are crossing in front of your vehicle.  
When there is oncoming traffic.  
When pedestrians are standing, moving toward you, or moving in the direction of travel.  
When the system cannot detect the traffic situation clearly.  
When there are metal objects, for example, tracks or metal plates in the road.  
When loads or attachment parts on other vehicles in front of your vehicle protrude to the side, rear, or above the normal vehicle dimensions.  
Lane Keeping system (Lane Assist)  
Introduction to the subject  
In this chapter you will find information on the following subjects:  
⇒ Display and indicator lightsꢀ  
⇒ How Lane Assist worksꢀ  
⇒ When to temporarily deactivate Lane Assist ꢀ  
Your vehicle may be equipped with a Lane Assist system, which can warn you if your vehicle unintentionally leaves the current drive lane.  
WARNING  
Always remember that Lane Assist has limits – using Lane Assist when it is not possible to drive safely can be dangerous and can lead to an accident and  
serious personal injury.  
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.  
Always keep your hands on the steering wheel and be ready to react – Lane Assist will not release you from the responsibility to control your vehicle.  
Always pay attention to the messages in the instrument cluster display and act accordingly.  
Always pay close attention to what is happening around your vehicle.  
WARNING  
Under certain circumstances, Lane Assist may not be able to recognize all lane markings. Bad or wet roads, worn out markings, or objects on the road can  
lead to the Lane Assist not or mistakenly recognizing lane markings.  
Always switch off Lane Assist under these conditions.  
WARNING  
If the camera's field of view is covered or dirty, Lane Assist may not work properly.  
Always make sure that the camera area is free of dirt or snow and not covered.  
NOTE  
In order to help keep Lane Assist working properly:  
Always keep the area of the windshield in front of the camera free of ice, dirt, snow, and other things that could reduce its field of view.  
Regularly check the windshield and especially the area of the camera for damages.  
Never attach or mount any accessories or other items to the steering wheel.  
191  

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Cruise control Adaptive Cruise Control (ACC) Lane Keeping system (Lane Assist) Blind Spot Monitor with Rear Traffic Alert

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