SmartKey battery

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Additives in gasoline
One of the main problems of poor fuel quality is the forming of deposits that are created during the gasoline combustion process. Mercedes-Benz recommends that you use fuel brands that have the ...

Fuse box in the engine compartment
Make sure that the windshield wipers are turned off. WARNING Make sure that the windshield wipers are switched off and that the SmartKey is removed from the ignition lock before you open ...

General notes
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 ...