See also:

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. ...

Steering wheel heating
Steering wheel heating Switching on/off Press the button. ▷ On: the LED lights up. ▷ Off: the LED goes out. ...

Tachometer
Tachometer Never force the engine speed up into the red warning field, see arrow. In this range, the fuel supply is interrupted to protect the engine. ...