See also:

Replacing the rear window wiper blade
Removing the wiper blade ► Remove the SmartKey from the ignition lock. ► Fold wiper arm 1 away from the rear window until it engages. ► Position wiper blade 2 at a right angle ...

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. - Check the battery in ...

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 h ...