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◆ Rear parking aid warning buzzer -H15
Function:
A self-test lasting less than one second is performed after switching on the ignition.
The control unit is then permanently in operation, however the distance sensing function is only activated on
engaging reverse gear.
A brief signal tone sounds to indicate that parking aid is ready for operation (time lag of one second on vehicles
with automatic gearbox on account of P-D shift).
A continuous tone sounds for 5 seconds if the control unit detects a system fault during the self-test.
The intervals between the acoustic pulses become shorter as a function of the decreasing gap. When the gap
is less than 30 cm the pulses become a continuous tone. Adaption of volume and pitch (audio frequency)
=>Page 220 .
8.3 - Starting parking aid system self-diagnosis
Requirements:
• Vehicle diagnostic, testing and information system VAS 5051 connected up and vehicle self-diagnosis se‐
lected => Page 1
• Ignition on
Attention:
Heed safety precautions => Page 1 .
Sequence of operations
-> Display on VAS 5051:
- From list -1- select vehicle system "76 - Parking aid".
- Wait until next display appears.
Audi A3 1997 ➤
Electrical system Self-diagnosis - Edition 02.2002
8.2 - General information 209
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