Audi Workshop Service and Repair Manuals

Calibration of voltage tap Influence of rear window on magnetic field sender is determined with heated rear window switched on and off. t  The A3 is not fitted with a shunt. Voltage is picked off at heated rear window. t  Vehicle is not to be moved during calibration (heated rear window on/off), as otherwise incorrect calibration values could be recorded. Indicated on display:

HEATED REAR WINDOW ON
>	OK

–  Switch on heated rear window. –  Use ENTER key to confirm “OK” display. Indicated on display:

PLEASE WAIT

The test is implemented internally in the navigation unit. Wait for next display. Indicated on display:

HEATED REAR WINDOW OFF
>	OK

–  Switch off heated rear window. –  Use ENTER key to confirm “OK” display. Indicated on display:

PLEASE WAIT

The test is implemented internally in the navigation unit. Wait for next display. If calibration is OK, process continues with compass calibration → Chapter. If however the following appears: Indicated on display:

NO REAR WINDOW READING CHECK CONNECTOR
>	CONTINUE

Heated rear window switch not actuated or heated rear window wiring not OK t  Use current flow diagram to check connectors at switch or heated rear window and repair if necessary. –  Press ENTER key to continue and repeat voltage tap calibration → Chapter. Indicated on display if vehicle moved during calibration:

DO NOT MOVE VEHICLE BETWEEN ON/OFF
>	CONTINUE

–  Do not move vehicle again. –  Press ENTER key to continue and repeat voltage tap calibration → Chapter.