Deleting all stored programs
Press the left and right memory buttons for approx. 20 seconds until the LED flashes rapidly. All stored programs are deleted.
The programs cannot be deleted individually.
See also:
Defrosting and defogging windows
Press the button.
Ice and condensation are quickly removed
from the windshield and the front side
windows.
For this purpose, also switch on the cooling
function. ...
Oil change
An oil change should be carried out by your
service center only.
...
Resetting the tone settings
All tone settings can be reset to the default setting.
1. "CD/Multimedia", "Radio" or "Settings"
2. "Tone"
3. "Reset" ...