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:
Important safety notes
WARNING
For safety reasons, switch off the windshield
wipers and remove the key from the ignition
lock before changing the wiper blades
(vehicles with KEYLESS-GO: make sure that
the on-boar ...
Roadside Assistance button
– Press and hold Roadside Assistance
button 1 for more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in Roadside Assistance but ...
Important safety notes
WARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unattended in the
ve ...