See also:

Problems with your vehicle
If you should experience a problem with your vehicle, particularly one that you believe may affect its safe operation, we urge you to contact an authorized Mercedes-Benz Center immediately to have ...

Clearing the memory of the integrated garage door opener on the rear-view mirror
Turn the SmartKey to position 2 in the ignition lock. Press transmitter buttons 2 and 4. The indicator lamp lights up yellow. Press and hold transmitter buttons 2 and 4 until the indic ...

Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be trigg ...