See also:

Immobilizer
The immobilizer prevents your vehicle from being started without the correct SmartKey. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. The engine can be starte ...

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 ...

Switching on the manual drive program
The manual drive program is only available for vehicles with the dynamic handling package and for AMG vehicles. Manual drive program M is different from drive program S (in AMG vehicles, drive ...