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 the SmartKey and replace it if necessary ().
  • Unlock the driver's door using the mechanical key ().
  • Lock the vehicle using the mechanical key ().
  • Have the starter battery and the battery contacts checked at a qualified specialist workshop.

If the SmartKey is faulty, contact Roadside Assistance or a qualified specialist workshop.

    See also:

    Warranty
    The Service and Warranty Information booklet contains detailed information about the warranties covering your vehicle. Your authorized Mercedes-Benz Center will exchange or repair any defective ...

    Problems with the sliding sunroof
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    Route guidance inactive
    1 Direction of travel 2 Current road ...