Fault-Tracing Information

In the event of a problem with the compass in the Upper electronic module (UEM), for example, if the compass shows incorrect direction or the direction freezes, a software download can solve the problem.

Fault-tracing

NOTE: Replacing components does not solve the problem.

Download the latest software to the Upper electronic module (UEM).
Perform a compass calibration.

Other information

see COMPASS, CALIBRATION

Fault symptom

Compass/Does not work

Fig 1: Identifying TMC Receiver

Courtesy of VOLVO CARS CORPORATION