CEM-1A59

Condition
If the central electronic module (CEM) registers that communication with the audio module (AUM) does not work, diagnostic trouble code CEM-1A59 is displayed.

Condition
None

Possible source
- No power supply to AUM control unit
- Contact resistance in the connectors
- Open circuit on the CAN bus
- Defective AUM control unit.

Condition
- Radio does not work
- Can not be operated with remote control.