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3. Set the parking brake.
Before driving into a car wash
So that the vehicle can roll into a car wash ob‐
serve instructions for going into an automatic
car wash, refer to page 291.
Auto Start/Stop function
The concept
The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, e.g., in traffic congestion or at traffic
lights. Drive readiness remains switched on.
The engine starts again automatically for driv‐
ing off.
Information
After every engine start via the Start/Stop but‐
ton, the Auto Start/Stop function is activated or
deactivated, according to the last setting, refer
to page 99. If the Auto Start/Stop function is
active, it is available as soon as a speed of ap‐
prox. 3 mph, approx. 5 km/h is exceeded.
Engine stop
The engine is switched off automatically dur‐
ing a stop under the following conditions:
▷ The selector lever is in selector lever posi‐
tion D.
▷ The brake pedal remains pressed while the
vehicle is stationary or the vehicle is held
by Automatic Hold.
▷ The driver's safety belt is buckled or the
driver's door is closed.
The air flow from the air conditioner is reduced
when the engine is switched off.
Displays in the instrument cluster
The display in the tachometer
indicates that the Auto Start/
Stop function is ready for an Au‐
tomatic engine start.
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
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.
▷ If window condensation is imminent.
▷ Engine or other parts not at operating tem‐
perature.
▷ Engine cooling is required.
▷ The wheels are at a sharp angle or the
steering wheel is being turned.
▷ Vehicle battery is heavily discharged.
▷ At higher elevations.
▷ The engine compartment lid 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.
▷ Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
Seite 98
Controls Driving
98
Online Edition for Part no. 0140 2 964 330 - VI/15
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