General notes

If you cannot lock or unlock the vehicle with the SmartKey, either the battery in the SmartKey is discharged, the SmartKey is faulty or the starter battery is discharged.

SmartKey and replace it if necessary. Check the battery in the SmartKey and replace it if necessary.
mechanical key. Unlock the driver's door using the mechanical key.
mechanical key. Lock the vehicle using the mechanical key.
battery contacts checked at a qualified specialist workshop. Have the starter battery and the battery contacts checked at a qualified specialist workshop.

If the SmartKey is faulty, contact Roadside Assistance or a qualified specialist workshop.

    See also:

    Low-beam headlamps (halogen headlamps)
    Low-beam headlamps (halogen headlamps) Switch off the lights. Open the hood. Turn housing cover 1 counter-clockwise and pull it out. Turn bulb holder 2 counter-clockwise and pull it out. ...

    Clearing the memory of the integrated garage door opener on the rear-view mirror
    X Turn the SmartKey to position 2 in the ignition lock. X Press and hold transmitter buttons 2 and 4 for approximately 20 seconds until indicator lamp 1 flashes rapidly. The memory is cleared. ...

    Menu overview
    The number of menus shown depends on the optional equipment in the vehicle. The Audio and Tel menus differ slightly in vehicles with an audio system and vehicles with COMAND. The examples given ...