The steering wheel has various control buttons for the cluster display, volume and telephone control and for the optional Linguatronic voice control system. On the electrically adjustable steering wheel column are also mounted the gearbox control lever, the stalk for controlling the speedtronic and cruise control functions, the main combination lever that operates the indicators, high beam and windscreen wipers and a stalk to adjust the steering wheel and control the optional heated steering wheel. Controls for the interior lighting and the sun roof or panoramic sun roof are mounted on the roof, near the interior rear-view mirror. This section also includes a compartment for sun glasses.