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Home >> Audi >> 2003 >> A8 Quattro >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> On Board Diagnostic (OBD) >> Acoustic Parking System, On Board Diagnostic (OBD) >> General information >> Function:

General information: Function:

The Acoustic Parking System (APS) consists of:

After switching ignition on, a self-test is performed that is completed in less than a second. The control module is now permanently in operation, but gap recognition is only activated once reverse gear is engaged or can be activated/deactivated with the switch for parking assistance.

When parking assistance is ready, a short signal is sounded (delay of one second for automatic vehicles due to P-D shift) and the function lamp in the switch lights up. If a malfunction is detected in the system, a constant signal sounds for 5 seconds and the function lamp in the switch for parking assistance blinks.

The pauses between chime impulses get shorter as the gap between vehicles gets smaller. For gaps under 25 cm, the chime becomes constant. (Volume and pitch (frequency) can be adapted using the VAG 1551. See Adaptation (function 10)  ).

Special case: driving along a wall 

NOTE: The following description refers only to the VAG 1551 Scan Tool (ST).