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- Fig. 1 Front of Audi A3: Sensor
Applies to Audi A3s: with Audi adaptive cruise control
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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.
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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.
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The maximum possible road gradient for safe operation of the adaptive cruise control has been exceeded. The adaptive cruise control cannot be switched on.
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Move the selector lever to position D/S or M.
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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.
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This message appears if the electronic stabilisation control (ESC) intervenes. In this case, the adaptive cruise control will automatically be switched off.
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This message appears if the Audi A3 rolls backwards when driving away on a slight gradient, even though the adaptive cruise control is active. Press the brake pedal to prevent the Audi A3 from rolling back or colliding with an object behind.
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This message appears on Audi A3s 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.
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The adaptive cruise control only operates in 2nd gear or higher (on Audi A3s with manual gearbox).
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This message appears if the driver does not change gear in time when the adaptive cruise control accelerates or brakes the Audi A3. 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.
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Audi A3s with manual gearbox: Cruise control mode is deactivated if the clutch pedal is pressed for a relatively long period.
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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 Audi A3 in motion because the driver has unbuckled the seat belt.
Door open
Audi A3s with automatic gearbox: You cannot switch on the adaptive cruise control if the Audi A3 is stationary and the driver's door is open.