Engine stop
Functional requirements
The engine is switched off automatically
when stopping under the following condi-
tions:
– Selector lever is in selector lever posi-
tion D.
– The brake pedal remains depressed
while the vehicle is at a standstill, or the
vehicle is held by Automatic Hold.
– The driver's seat belt is buckled, or the
driver's door is closed.
Manual engine stop
If the engine was not switched off automati-
cally when the vehicle stopped, the engine
can be switched off manually:
– Depress the brake pedal forcefully again
from the current pedal position.
– Engage selector lever position P.
When all functional preconditions are fulfil-
led, the engine switches off.
Automatic climate control with engine
switched off
The air flow from the air conditioning sys-
tem is reduced when the engine is switched
off.
Interaction Unit view
The READY indicator on the
Interaction Unit shows that
the Auto Start/Stop function
is ready to start the engine au-
tomatically.
Functional limitations
The engine is not switched off automatically
in the following situations:
– In case of a steep downhill grade.
– The brake pedal was not depressed hard
enough.
– When the ambient temperature is
high and automatic climate control is
switched on.
– The vehicle interior has not yet been
heated or cooled as desired.
– When window condensation is possi-
ble and automatic climate control is
switched on.
– Engine or other parts are not at operat-
ing temperature.
– Engine cooling is required.
– Without Mild Hybrid technology: The
wheels are at a sharp angle or the steer-
ing wheel is being turned.
– Vehicle battery is heavily discharged.
– At higher elevations.
– Hood is unlocked.
– For stop-and-go traffic.
– Selector lever position is S, L, or R.
– After reversing.
Starting the engine
Functional requirements
The engine starts automatically under the
following preconditions:
– By releasing the brake pedal.
– When Automatic Hold is activated: step
on the accelerator pedal.
Driving off with the Auto Start/Stop
function
To drive off, accelerate normally after start-
ing the engine.
Seite 116
CONTROLS Driving
116
Online Edition for Part no. 01405B37A59 - II/24
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