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 started ...

Changing the battery
You require a CR 2025 3 V cell battery. Take the mechanical key out of the SmartKey (). Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until batte ...

MB Info call button
•► Press and hold MB Info call button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in MB Info call button 1 fla ...