A4: Sensors Vibrating With Parking Aid System Fault

1. Carry out speaker test. Only applicable to vehicles with rear hard wired parking aid sounders. Check the parking aid sounder wiring circuit and connector. Rectify as required. Check and install a new parking aid sounder as required. Vehicles with audio parking aid system. Confirm audio system is functioning correctly. Refer to the relevant section of the workshop manual.

Parking aid system functioning correctly.

Yes 

No further action required.