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.