Problems with the SmartKey

Problem You cannot lock or unlock the vehicle using the SmartKey. Possible causes/consequences and Solutions The SmartKey battery is discharged or nearly discharged. Try again to lock/unlock th ...

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 unsupervised in the vehicle ...

See also:

Cruise Control Messages
APPLY BRAKE BEFORE CRUISE If this message displays when attempting to activate cruise control, apply the brake pedal and try again. CRUISE SET TO XXX This message displays when the cruise control ...

Driver Alert Control (DAC)– introduction
This function is intended to alert the driver if his/her driving becomes erratic, such as if the driver is distracted or fatigued. NOTE The camera has certain limitations, see page 159. A c ...

Charging the battery
WARNING Never charge a battery still installed in the vehicle unless a battery charger unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions tha ...