Audi A3  Driver assistance  Driver assist systems  Audi adaptive cruise control
Applies to vehicles: with Audi adaptive cruise control
ACC: not available
The system cannot detect objects reliably and will be deactivated. The sensor is out of alignment or defective. Drive to a qualified workshop and have the fault rectified.
ACC: currently unavailable. No sensor vision
ACC and Audi pre sense: currently unavailable. No sensor vision
These messages appear if the radar sensor vision is impaired, e.g. by leaves, snow, heavy road spray or dirt. Clean the sensor Fig. 1.
ACC: currently unavailable. Gradient too steep
The maximum possible road gradient for safe operation of the adaptive cruise control has been exceeded. The adaptive cruise control cannot be switched on.
ACC: only available in D, S or M
Move the selector lever to position D/S or M.
ACC: parking brake applied
The adaptive cruise control system is deactivated if the parking brake is applied. The adaptive cruise control will be available again when the parking brake is released.
ACC: currently unavailable. Stabilisation control input
This message appears if the electronic stabilisation control (ESC) intervenes. In this case, the adaptive cruise control will automatically be switched off.
ACC off: manual control!
This message appears if the vehicle rolls backwards when driving away on a slight gradient, even though the adaptive cruise control is active. Press the brake pedal to prevent the vehicle from rolling back or colliding with an object behind.
ACC: currently unavailable. Speed too low
This message appears on vehicles with manual gearbox if the current speed is too low for ACC mode.
You cannot store speed settings below 30 km/h. The cruise control system switches off if the speed falls below 20 km/h.
ACC: available from 2nd gear up
The adaptive cruise control only operates in 2nd gear or higher (on vehicles with manual gearbox).
ACC: engine speed
This message appears if the driver does not change gear in time when the adaptive cruise control accelerates or brakes the vehicle. The adaptive cruise control is switched off if the engine speed is not maintained within the permissible range. This is indicated by a warning tone.
ACC: clutch pedal pressed
Vehicles with manual gearbox: Cruise control mode is deactivated if the clutch pedal is pressed for a relatively long period.
Three white dots appear if a setting made with the control lever cannot be implemented. This might happen after stopping, for example, if the adaptive cruise control cannot set the vehicle in motion because the driver has unbuckled the seat belt.
Door open
Vehicles with automatic gearbox: You cannot switch on the adaptive cruise control if the vehicle is stationary and the driver's door is open.

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