Problems with the SmartKey

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Charging the battery
WARNING During charging and jump-starting, explosive gases can escape from the battery. There is a risk of an explosion. Particularly avoid fire, open flames, creating sparks and smoking. Ensur ...

BAS (Brake Assist System)
Observe the "Important safety notes" section  . WARNING If BAS is malfunctioning, the braking distance in an emergency braking situation is increased. There is a risk of an accident ...

Change of address or change of ownership
In the event of a change of address, please send us the "Notification of Address Change" in the Service and Guarantee booklet or simply call the Mercedes-Benz Customer Assistance Center ...