A4 Quattro Sedan L4-2.0L Turbo (CAEB) (2009)
Compass: Testing and Inspection
Interior Rearview Mirror
Digital Compass, Calibrating
It is necessary to calibrate the digital compass if:
‹› Compass directions are not correct,
‹› The letter "C" instead of a direction will appear or the display will be blank.
‹› A new automatic day/night interior mirror (Y7) is installed.
The digital compass may also need to be calibrated if:
‹› the vehicle battery is reconnected after being disconnected for an extended period,
‹› a new audio system or audio system component was installed.
Digital Compass, Calibrating:
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Switch on ignition.
The letter "C" must appear in the display - 1 -.
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If the letter "C" does not appear, press the button - 2 - for 9 to 12 seconds until the "C" appears in the display - 1 -.
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Drive in a circle two to three times at about 5 mph (10 km/h) until a direction is shown in compass display - 1 -.
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Ensure the interior rearview mirror automatic dimming function is activated again after completing the calibration, refer to => [
Automatic-Dimming Function, Switching On and Off ]. See: Body and Frame/Mirrors/Service and Repair/Removal and Replacement/Interior
Rearview Mirror Overview/Automatic-Dimming Function, Switching On and Off