See also:

System self-test
After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs:  - ...

Rear fog lamp
To switch on the rear fog lamp: turn the SmartKey in the ignition lock to position 2 or start the engine. Turn the light switch to or (vehicles with front fog lamps), or turn the light s ...

Message memory
The on-board computer saves certain display messages. You can call up the display messages in the message memory. – Press the or button on the steering wheel to select the Serv. menu. If th ...