Setting the correct compass calibration zoneSetting the correct compass calibration zone  - Digital compass - Lights and vision - Controls - Audi A4 Owner's Manual - Audi A4

The correct compass calibration zone must first be set before the compass can give an accurate reading.

Map of compass calibration zones

Map of compass calibration zones

Ц Press and hold button A, fig. 73 until the currently set zone number is displayed on the interior mirror.
Ц Press button A repeatedly until the correct zone number appears. The adjustment mode will be ended automatically after a few seconds.