VOLVO
ICM-U01634A - Lost Communication With Navigation Control Module. System Internal Failures. Incorrect component installed
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (4)
What does this fault code mean?
ICM tests whether the MMM appears on the approved list held in the CEM. If the serial number does not match, the MMM is blocked and the navigation function is lost. Although the code is labelled navigation control module, it is the multimedia module that is checked. The code is set when the mismatch is detected.
Possible causes
- Replacement with a multimedia module that the CEM list does not approve
- Software not loaded when the multimedia module was replaced
- The software download failed or was incomplete
What you can do
- 1Check that the fuses are intact. Their locations are given in the owner's manual or on the fuse box cover
- 2If the multimedia module was recently replaced, check that software was loaded. The download is done by a workshop
- 3Check that the connectors to the multimedia module are firmly seated and free from oxidation
- 4If the fault remains after the software download, the multimedia module may need replacing. A workshop should assess this
Symptoms you may notice1
- The car's position on the map is incorrect
General guidance for car owners. Diagnosis on the car can point to a different cause.