See also:

Call volume
Call volume can be only be adjusted during a call. Use the buttons in the steering wheel keypad or the infotainment system’s VOL control. ...

Other fluids and lubricants
A Under normal driving conditions the transmission oil does not need changing during its service life. However, it may be necessary under adverse driving conditions. B Models without headlight ...

The alarm system
The alarm is automatically armed whenever the vehicle is locked with the remote key or optional Personal Car Communicator. When armed, the alarm continuously monitors a number of points on the ...