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Driving224
Important conditions for the engine to automatically switch off
x The driver seat belt must be buckled.
x The driver door must be closed.
x The bonnet must be closed.
x The factory-fitted towing bracket must not be electrically connected to a
trailer.
x A minimum engine temperature has been reached.
x The vehicle has moved since the last stop.
x In vehicles with Climatronic: The temperature inside the vehicle is within
the preset temperature range.
x The temperature set is neither very high nor very low.
x The air conditioning defrost function is not switched on.
x In vehicles with Climatronic: the blower has not been manually set to a
high speed.
x The power level of the vehicle's battery is sufficient.
x The vehicle's battery temperature is neither too high nor too low.
x The vehicle is not on a steep gradient or slope.
x The front wheels are not overly turned.
x The heated windscreen is not switched on.
x Reverse gear is not engaged.
x The park assist system is not switched on.
Conditions for automatically restarting the engine
The engine may automatically restart under the following conditions:
x If the vehicle interior is too hot or too cold.
x If the vehicle moves.
x If the vehicle's battery voltage drops.
Conditions requiring the key to restart the engine
The engine must be started using the key under the following conditions:
x If the driver unbuckles his/her seat belt.
x If the driver's door is opened.
x If the bonnet is opened.
x In vehicles with a manual gearbox: If a gear has been selected.
Switching Start-Stop mode on and off manually
x Press the button on the centre console page 223, fig. 147.
x The button will light up when the Start-Stop function is switched off.
The engine will start immediately if the vehicle is in Stop mode when it is
switched off manually.
WARNING
The brake servo and the power steering do not work when the engine is
switched off.
x Never allow the vehicle to move when the engine is switched off.
Caution
Using the Start-Stop function for a long period at very high outdoor tempera-
tures could damage the vehicle's battery.
Note
In some cases, you may have to restart the vehicle using the key. Observe the
corresponding message on the instrument panel display.
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