SmartKey battery

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Please bear the following in mind
For safety reasons, Mercedes-Benz recommends that you only use Tires and wheels which have been approved by Mercedes-Benz specifically for your vehicle. These tires have been specially adapted f ...

Clearing the memory of the integrated garage door opener on the rear-view mirror
X Turn the SmartKey to position 2 in the ignition lock. X Press and hold transmitter buttons 2 and 4 for approximately 20 seconds until indicator lamp 1 flashes rapidly. The memory is cleared. ...

Restoring the factory settings
Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...