Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ICM-1A53

Condition




The infotainment control module (ICM) checks the communication with the multimedia module (MMM).
The diagnostic trouble code (DTC) is stored if the infotainment control module (ICM) registers a fault in the communication with the multimedia module (MMM).
The diagnostic trouble code (DTC) can be diagnosed with the ignition on and the battery voltage above 11 V.

Substitute value
- None.

Possible source
- Internal fault in the multimedia module (MMM)
- No multimedia module (MMM).

Fault symptom[s]
- The navigation buttons on the steering wheel do not function.
- No voice message.