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
• switch off the ECO start/stop function or
switch to drive program 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 temperature in the vehicle interior
deviates from the set range.
• the charge level of the battery is too low.
See also:
High outside temperatures
If DEF heats up to over 122 °F (50 °C) for
extended periods, e.g. as a result of direct
sunlight on the DEF reservoir, DEF can
decompose. Ammonia vapors develop as a
result.
WARNING
When o ...
Downhill gradients
On long and steep gradients, you must
reduce the load on the brakes by shifting
early to a lower gear. This allows you to take
advantage of the engine braking effect and
helps avoid overheatin ...
Deactivating
- Press and hold the closing button
in the tailgate until you hear
two short tones. ...