Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-7A04

Condition




The central electronic module (CEM) checks the signal from the Volume+ button.
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the Volume+ button has been active for more than 1 minute.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute value
- None.

Possible source
- The Volume+ button is jammed in the pressed in position
- Damaged Volume+ button.

Fault symptom[s]
- The radio buttons on the steering wheel do not function
- The phone buttons on the steering wheel do not work.