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▷ The engine is not yet at operating temper‐
ature.
▷ The wheels are at a sharp angle or the
steering wheel is being turned.
▷ After driving in reverse.
▷ Fogging of the windows when the auto‐
matic climate control is switched on.
▷ Vehicle battery is heavily discharged.
▷ At higher elevations.
▷ The engine compartment lid is unlocked.
▷ Stop-and-go traffic.
▷ Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷ M double-clutch transmission:
By releasing the brake pedal.
▷ Manual transmission:
The clutch pedal is pressed.
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 following 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.
Functional limitations
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 cooling function is switched on.
▷ The steering wheel is turned.
▷ Double-clutch transmission: Change from
selector lever position D to N, R or D/S.
▷ M double-clutch transmission: Accelerat‐
ing while simultaneously applying the
brake.
▷ The vehicle begins rolling.
▷ Fogging of the windows when the auto‐
matic climate control is switched on.
▷ Vehicle battery is heavily discharged.
▷ Excessive cooling of the car's interior when
the heating is switched on.
▷ Low brake vacuum pressure; this can oc‐
cur, e.g., if the brake pedal is depressed a
number of times in succession.
Preventing an automatic engine stop
with aM double-clutch transmission
The concept
To make it possible to drive off very quickly,
such as at an intersection, the automatic en‐
gine stop can be actively prevented.
Preventing an engine stop using the
brake pedal
The engine stop can be actively prevented
within one second after the vehicle comes to a
standstill.
▷ Immediately after the vehicle comes to a
standstill, briefly press the brake pedal
forcefully.
▷ Then press the brake pedal with normal
braking force.
Seite 71
Driving Controls
71
Online Edition for Part no. 01 40 2 954 339 - II/15
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