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The display indicates that the
conditions for an automatic en‐
gine stop have not been met.
Indications on the Control Display
Total time with switched-off engine
The duration for which the Auto Start/Stop func‐
tion has switched off the engine is shown on the
EfficientDynamics display, refer to page 149.
The total time is automatically reset every time
the vehicle is refueled.
Functional limitations
The engine is not switched off automatically in
the following situations:
▷ In case of a steep downhill grade.
▷ Brake not engaged strongly enough.
▷ The external temperature is high and auto‐
matic climate control is running.
▷ The car's interior has not yet been heated or
cooled to the required level.
▷ Where there is a risk of window condensation
when the automatic climate control is
switched on.
▷ Engine or other parts not at operating tem‐
perature.
▷ Engine cooling is required.
▷ The wheels are at a sharp angle or the steer‐
ing wheel is being turned.
▷ Vehicle battery is heavily discharged.
▷ At higher elevations.
▷ The hood is unlocked.
▷ HDC Hill Descent Control is activated.
▷ The parking assistant is activated.
▷ Stop-and-go traffic.
▷ Selector lever position in N or R.
▷ After driving in reverse.
Starting the engine
Functional requirements
M Steptronic Sport transmission
The engine starts automatically under the follow‐
ing preconditions:
▷ By releasing the brake pedal.
▷ When Automatic Hold is activated: press the
accelerator pedal.
Driving off
After the engine starts, accelerate as usual.
Safety mode
After the engine switches off automatically, it will
not start again automatically if any one of the fol‐
lowing conditions are met:
▷ The driver's safety belt is unbuckled and the
driver's door is open.
▷ The hood was unlocked.
Some indicator lights light up for a varied length
of time.
The engine can only be started via the Start/Stop
button.
System limits
Even if driving off was not intended, the deacti‐
vated engine starts up automatically in the fol‐
lowing situations:
▷ Excessive warming of the car's interior when
the air conditioning is switched on.
▷ Excessive cooling of the car's interior when
the heating is switched on.
▷ Where there is a risk of window condensation
when the automatic climate control is
switched on.
▷ The steering wheel is turned.
▷ Change from selector lever position D to N or
R.
Seite 125
Driving
CONTROLS
125
Online Edition for Part no. 01402666865 - VI/19
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