Audi A3 Cabriolet  Driver assistance  Parking aids
Applies to vehicles: with parking system plus/park assist/reversing camera
If you hear a continuous warning tone for a few seconds and the LED in the button starts flashing when you switch on the parking aid, or while the parking aid is activated, a system fault has occurred. If the fault is not corrected before you switch off the ignition, it will only be indicated by the flashing LED in the button the next time you switch on the parking aid by engaging reverse gear.
Parking system plus*/parking system plus and park assist*
If a sensor malfunctions, the symbol will be shown on the MMI display in front of or behind the vehicle. If a rear sensor malfunctions, obstacles will only be displayed in zones -A- and -B- Fig. 1. If a front sensor malfunctions, obstacles will only be displayed in zones -C- and -D-.
Drive to a qualified workshop soon and have the fault rectified.

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