Calibration

The compass may need to be calibrated if, for example, the vehicle is driven into a new magnetic zone. The character C is shown in the mirror's display if calibration is necessary.
1. Stop the vehicle in a large open area, safely out of traffic and away from steel structures and high-tension electrical wires.
2. Start the vehicle.
NOTE
For best results from calibration, switch off
all electrical equipment in the vehicle (climate
system, windshield wipers, audio system,
etc.) and make sure that all doors are
closed.
3. Using a pen or similar object, press and hold the button on the underside of mirror until C is shown again in the mirror(after approx. 6 seconds).
4. Drive as usual. C disappears from the display when calibration is complete.
Alternative calibration method:
Drive slowly in a circle at a speed of no more than 5 mph (8 km/h) until C disappears from the display when calibration is complete.
See also:
Steep inclines and/or heavy loads
ACC is primarily intended for use on fairly level roads. The system may have
difficulty maintaining the correct distance to a vehicle ahead on steep inclines,
if the vehicle is carrying a heavy lo ...
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Climate system maintenance
Special tools and equipment are required to
maintain and carry out repairs on the climate
system. Work of this type should only be done
by a trained and qualified Volvo service technician. ...
