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Auto Start/Stop function
Concept
The Auto Start/Stop function helps save fuel.
The system switches off the combustion engine
when conditions for electric driving have been
met. The ignition or drive-ready state remains
switched on.
General information
READY is displayed in the instrument cluster. If
necessary, the combustion engine starts auto‐
matically.
The combustion engine is also stopped during
the trip when rolling without acceleration or
braking. This driving condition, in which the ve‐
hicle is traveling without power and energy re‐
covery is not active, is referred to as coasting,
refer to page 94.
The combustion engine is not switched off au‐
tomatically in the following situations:
▷ The combustion engine is not at operating
temperature.
▷ The transmission selector lever is in position
M/S.
▷ High-voltage battery is heavily discharged
or vehicle electrical system is heavily bur‐
dened.
▷ High stress of the automatic climate control
in the heating or cooling phase.
▷ The hood is unlocked.
▷ The vehicle is being optimized for the cur‐
rent driving style, for instance during the
break-in period or after a service appoint‐
ment.
▷ The hybrid system is malfunctioning.
Safety mode
An automatically stopped combustion engine
does not start independently:
▷ When the driver's door is open and neither
the brake nor accelerator pedal are de‐
pressed.
▷ When the hood is unlocked.
The indicator lights come on. The combustion
engine can only be started via the Start/Stop
button.
Switching off the vehicle during an
automatic engine stop
During an automatic engine stop, the vehicle
can be switched off permanently, for instance
when leaving it.
1.
Press the Start/Stop button.
▷ The ignition is switched off.
▷ The radio-ready state is activated.
▷ The Auto Start/Stop function is deacti‐
vated.
▷ Engage selector lever position P.
2. Set the parking brake.
Malfunction
The Auto Start/Stop function no longer switches
off the combustion engine automatically in the
event of a malfunction. A message is displayed.
It is possible to continue driving. Have the sys‐
tem checked.
Electric driving: ePOWER.
General information
In ePOWER, the vehicle is driven exclusively
electrically. ePOWER works automatically.
Depending on the charge state of the high-
voltage battery, maximum speed and range
achieved can vary.
For electrical driving, certain conditions, refer to
page 93, must be satisfied.
Displays of the hybrid system, refer to
page 111.
Seite 92
CONTROLS
Driving
92
Online Edition for Part no. 01402983594 - X/17
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