Audi A6 Typ 4G: Audi adaptive cruise control

Description

Applies to: vehicles with Audi adaptive cruise control

Fig. 89 Detection range

The adaptive cruise control system is a combination of speed and distance regulation. It assists the driver by both regulating the speed and maintaining a distance to the vehicle driving ahead, within the limits of the system. If the system detects and object ahead, adaptive cruise control can brake and accelerate your vehicle.

This makes driving more comfortable both on long stretches of highway and in stop-and-go traffic.

What can adaptive cruise control do?

The adaptive cruise control system uses video, radar and ultrasound. Objects driving ahead can be recognized up to 650 feet (200 m) away.

On open roads with no traffic, it functions like a cruise control system. The stored speed is maintained.

When approaching an object ahead, the adaptive cruise control system automatically brakes to match that object's speed and then maintains the stored distance. As soon as the system does not detect an object ahead, adaptive cruise control accelerates up to the stored speed.

In stop-and-go traffic, adaptive cruise control can brake until the vehicle is stationary and then begin driving again under certain conditions.

Audi braking guard can warn you about an impending collision and initiate braking maneuvers.

Which functions can be controlled?

When you switch adaptive cruise control on, you can set the current speed as the "control speed".

When driving, you can stop cruise control or change the speed at any time.

You can also set the distance to the object moving ahead and set the driving mode of the adaptive cruise control.

General information

Applies to: vehicles with Audi adaptive cruise control

Fig. 90 Front of the vehicle: sensors and video camera

The areas that contain the radar and ultrasonic sensors and the video camera fig. 90 must not be covered by stickers, deposits or other objects because they can interfere with the function of the adaptive cruise control system and braking guard. For information on cleaning. The same applies for any modifications made in the front area.

The function of the adaptive cruise control system and braking guard is limited under some conditions.

• Objects can only be detected when they are within the sensor range fig. 89.
• The system has a limited ability to detect objects that are a short distance ahead, off to the side of your vehicle or moving into your lane.
• Objects that are difficult to detect such as motorcycles, vehicles with high ground clearance or an overhanging load are detected late or not detected at all.
• When driving through curves.
• With stationary objects.

WARNING

Always pay attention to traffic when adaptive cruise control is switched on and braking guard is active. As the driver, you are still responsible for starting and for maintaining speed and distance to other objects. Braking guard is used to assist you. The driver must always take action to avoid a collision. The driver is always responsible for braking at the correct time.

• For safety reasons, do not use adaptive cruise control when driving on roads with many curves, when the road surface is in poor condition and/or in bad weather (such as ice, fog, gravel, heavy rain and hydroplaning).

  Using the system under these conditions increases the risk of an accident.

• Switch adaptive cruise control off temporarily when driving in turning lanes, on expressway exits or in construction zones. This prevents the vehicle from accelerating to the stored speed when in these situations.
• The adaptive cruise control system will not brake by itself if you put your foot on the accelerator pedal. Doing so can override the speed and distance regulation.
• When approaching stationary objects such as stopped traffic, adaptive cruise control will not respond and braking guard will have limited function.
• The adaptive cruise control system and braking guard do not react to people, animals, objects crossing the road or oncoming objects.
• The function of the radar sensors can be affected by reflective objects such as guard rails, the entrance to a tunnel, heavy rain or ice.

WARNING

• Improper use of adaptive cruise control can cause collisions, other accidents and serious personal injury.
• Never let the comfort and convenience that adaptive cruise control and braking guard offer distract you from the need to be alert to traffic conditions and the need to remain in full control of your vehicle at all times.
• Always remember that the adaptive cruise control and braking guard have limits - they 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 disabled vehicle.

  If registered by the radar sensors, vehicles or obstacles that are not moving can trigger a collision warning and if confirmed by the video camera, an acute collision warning.

• 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 automatic braking function cannot bring the vehicle to a sudden or emergency stop under these conditions.
• To prevent unintended operation, always switch ACC off when it is not being used.

Note

The sensors can be displaced by impacts or damage to the bumper, wheel housing and underbody. That could affect the adaptive cruise control system and braking guard.

Have an authorized Audi dealer or authorized Audi Service Facility check their function.

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