Automatic engine start
The engine is started automatically if you:
- release the brake pedal when HOLD is not
activated and the transmission is in
position D or N
- shift the transmission to position R
- depress the accelerator pedal
- have switched off the ECO start/stop
function by pressing the ECO button
- switch to drive program S, S+ or M
- unfasten your seat belt or open the driver's
door
The engine is also started automatically if:
- the vehicle starts to roll.
- the brake system requires this.
- the system detects moisture on the
windshield when the air-conditioning
system is switched on.
- the charge level of the battery is too low.
- the driver's seat belt is removed or the
driver's door is opened.
See also:
Vehicle remote opening
If you have unintentionally locked your vehicle (e.g. the SmartKey is still in
the vehicle) and a replacement SmartKey is not available, the vehicle can be opened
by a Mercedes-Benz Customer Assis ...
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 ...
Useful information
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences ...
