Audi A4

Cruise Control System

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. The driver remains responsible for braking, speed control, and maintaining distance to other vehicles.
  • Switch the cruise control off temporarily when driving in turning lanes, highway exits, or construction zones.

Note

Before driving downhill for a long distance on a steep hill, reduce your speed and select a lower gear. This uses the engine braking effect and reduces brake load.

Display Overview

Applies to: vehicles with cruise control system

Indicator lights and messages in the speedometer provide information about the driving situation and system settings. Displays depend on country and vehicle equipment.

Indicator Lights

CRUISE – The cruise control system is switched on and actively controlling the set speed.

An additional indicator may 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

Requirement: The ignition must be switched on.

To switch the system on, pull the operating lever toward you to the ON position.

Warning

  • If the brakes malfunction (for example due to overheating), cruise control regulating functions may shut off automatically.

Selecting the Cruise Control Speed

Applies to: vehicles with cruise control system

When the vehicle is stationary, you can preselect a speed. You can also set the speed while driving.

Requirement: The system must be switched on.

  • To preselect a speed while stationary, tap the lever toward the SET position.
  • To activate the cruise control speed while driving, pull the lever to the ACTIVATE position.
  • To set the current driving speed, press the button on the lever.

Changing the Cruise Control Speed

Applies to: vehicles with cruise control system

Requirement: The system must be switched on.

  • Tap the lever to the first level to increase or decrease speed in small increments.
  • Tap the lever to the second level to change speed in larger increments.
  • Tap and hold the lever to adjust the speed continuously.

Overriding or Deactivating the Cruise Control Speed

Applies to: vehicles with cruise control system

When deactivated, the stored speed remains saved and can be resumed.

Overriding

  • Press the accelerator pedal to temporarily override cruise control.
  • Release the accelerator to resume the stored speed.

If the system is overridden for an extended period, it will deactivate automatically.

Deactivating

  • Press the lever to the CANCEL position, or
  • Press the brake pedal.

Warning

Resting your foot on the accelerator pedal can override cruise control. System braking interventions may not occur.

Switching the System Off

Applies to: vehicles with cruise control system

If you do not plan to use cruise control for a longer period:

Press the lever to the OFF position (locked). The indicator light will turn off and the stored speed will be cleared.

Messages

Applies to: vehicles with cruise control system

If a malfunction occurs, cruise control functions may be unavailable or limited.

Messages may indicate poor weather conditions or covered sensors. Clean the sensor area and try again later.

If the malfunction persists, visit an authorized Audi dealer or service facility.

Efficiency Assist

Applies to: vehicles with efficiency assist

Efficiency assist provides predictive information to help reduce fuel consumption. Depending on vehicle equipment, the system may use navigation data, camera data, and radar sensors.

Adjusting Efficiency Assist

Efficiency assist functions can be adjusted individually depending on vehicle equipment.

  • Predictive messages
  • Predictive control

Situation Symbols

Depending on vehicle equipment, symbols may appear to indicate driving situations to which efficiency assist is responding.

  • Slow down (predictive messages only)
  • Adjustment for curves (predictive control only)
  • Speed limit
  • Exit ahead
  • Intersection ahead
  • Traffic circle ahead

If the indicator lights turn green or red, this shows a difference between the speed limit and the set speed.

Warning

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

Tips

  • Functions depend on up-to-date navigation data.
  • The system only detects traffic signs with speed limits.
  • Instrument cluster displays depend on country-specific units.

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