See also:

Releasing the parking brake manually
In the event of an electrical power loss or electrical malfunction, you can release the parking brake manually. Secure the vehicle against rolling Before releasing the parking brake manually, ...

Malfunction
A Check Control message is displayed. On the Control Display, the areas in front of and behind the vehicle are shaded. PDC has failed. Have the system checked. To ensure full operability: ` ...

Example: playing back a CD
1. Switch on the Entertainment sound output if necessary. 2. Press the button on the steering wheel. 3. ›C D and multimedia‹ The medium last played is played back. 4. Press the button on t ...