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The air flow from the air conditioner is reduced
when the engine is switched off.
Displays in the instrument cluster
The READY display in the tach‐
ometer signals that the Auto
Start/Stop function is ready to
start the engine automatically.
The display indicates that the
conditions for an automatic en‐
gine stop have not been met.
Functional limitations
The engine is not switched off automatically in
situations such as the following:
▷ In case of a steep downhill grade.
▷ External temperature too low.
▷ 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.
▷ The engine is not yet at operating tempera‐
ture.
▷ The wheels are at a sharp angle or the steer‐
ing wheel is being turned.
▷ After driving in reverse.
▷ Where there is a risk of window condensation
when the automatic climate control is
switched on.
▷ 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 in selector lever position N,
M/S or R.
▷ Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the follow‐
ing conditions:
▷ Steptronic transmission: by releasing the
brake pedal.
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.
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 air conditioning is switched on.
▷ The steering wheel is turned.
▷ Steptronic transmission: change from selec‐
tor lever position D to R, N or M/S.
▷ Steptronic transmission: change from selec‐
tor lever position P to N, D, R or M/S.
▷ Where there is a risk of window condensation
when the automatic climate control is
switched on.
▷ Vehicle battery is heavily discharged.
▷ Excessive cooling of the car's interior when
the heating is switched on.
Seite 108
CONTROLS
Driving
108
Online Edition for Part no. 01402896498 - X/18
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