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

http://strategic-human-resource.com/

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:

    Safety systems
    Problem Possible causes/consequences and Solutions (USA only) (Canada only) The red brake system warning lamp comes on while the engine is running. A warning to ...

    E-Class Wagon in the Market
    The E350 wagon joins a redesigned E-Class that's been a success by any measure. The wagon comes up short in terms of execution, but given the car's pedigree — and the fact that there's an E63 AMG ...

    Important safety notes
    While the vehicle is in motion, the tire pressure loss warning system monitors the set tire pressure using the rotational speed of the wheels. This enables the system to detect significant pressur ...