Audi A4 Owners & Service Manuals

Audi A4: Cruise control system

Description

Applies to: vehicles with cruise control system

The cruise control system assists the driver in maintaining a constant speed above approximately 15 mph (20 km/h). The system maintains the desired speed by braking and accelerating.

WARNING

  • Observe the safety precautions and note the limits of the assist systems, sensors, and cameras.
  • The cruise control system is only an assist system, and the driver is still responsible for controlling the vehicle. The driver is especially responsible for braking, controlling the speed, and maintaining the distance to other vehicles.
  • Switch the cruise control off temporarily when driving in turning lanes, highway exits, or in construction zones. This prevents the vehicle from accelerating to the stored speed when in these situations.

Note

Before driving downhill a long distance on a steep hill, decrease your speed and select a lower gear. This makes use of the engine braking effect and reduces the load placed on the brakes.

Display overview

Applies to: vehicles with cruise control system

Indicator lights and messages in the speedometer inform you about the driving situation and the settings. The displays depend on the country and equipment.

Indicator lights

- the cruise control system is switched on and actively controls the set speed.

An additional indicator will appear in the head-up display".

WARNING

Observe the safety precautions and note the limits of the assist systems, sensors, and cameras.

Switching the system on

Applies to: vehicles with cruise control system

Driver assistance
Fig. 106 Operating lever: switching the system on

Requirement: the ignition must be switched on.

  • To switch the system on, pull the lever toward you to position (2).

WARNING

  • Observe the safety precautions and note the limits of the assist systems, sensors, and cameras.
  • If the brakes are malfunctioning (for example, overheating) while the cruise control system is switched on, the regulating functions may shut off automatically.

Preselecting or activating a cruise control speed

Applies to: vehicles with cruise control system

When the vehicle is stationary, you can preselect the speed to be maintained, or you can select the speed while driving.

Requirement: the system must be switched on.

  • To preselect a cruise control speed when the vehicle is stationary, tap the lever toward (+)/(-), fig. 106.
  • To activate the cruise control speed, pull the lever toward position (2) while driving.
  • To set the current driving speed as the cruise control speed, press the button (1) on the lever.

Changing the cruise control speed

Applies to: vehicles with cruise control system

Requirement: the system must be switched on.

  • To increase or decrease the cruise control speed in small increments, tap the lever up to the first level toward (+)/(-), fig. 106.
  • To increase or decrease the cruise control speed in larger increments, tap the lever up to the second level toward (+)/(-).
  • To increase or decrease the cruise control speed continuously, tap and hold the lever at the first or second level toward (+)/(-).

Overriding or deactivating the cruise control speed

Applies to: vehicles with cruise control system

You can override or deactivate the cruise control system. When you deactivate the system, your cruise control speed will be stored and you can resume that speed.

Requirement: the system must be switched on and the regulated speed must be activated.

Overriding

  • To temporarily override the cruise control speed, press the accelerator pedal.
  • To resume the stored regulated speed, remove your foot from the accelerator pedal.

If you override the cruise control system for a long period of time, the cruise control system will be deactivated.

Deactivating

  • To deactivate the cruise control speed, press the lever to position (3) (not locked into place), fig. 106, or
  • Press the brake pedal.

WARNING

Resting your foot on the accelerator pedal could override the cruise control. Braking interventions and corrective actions by the system may not occur.

Switching the system off

Applies to: vehicles with cruise control system

If you do not want to use the cruise control system for a longer period of time, you can switch it off.

  • To switch the system off, press the lever toward (3) (locked into place), fig. 106.

The indicator light will turn off and the set speed will be cleared.

Messages

Applies to: vehicles with cruise control system

If or is displayed when there is a malfunction, the cruise control system functions may be unavailable or limited.

A message that indicates the cause and possible solution may appear with some displays. The weather conditions may be too poor or a sensor may be covered. Clean the area in front of the sensors and try to turn the system on again later.

If the malfunction remains, drive to an authorized Audi dealer or authorized Audi Service Facility immediately to have the malfunction corrected.

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