BMW M3 SEDAN Owner's Manual page 114

CONTROLS
▷ Depress the brake pedal forcefully again
from the current pedal position.
▷ Engage selector lever position P.
When all functional preconditions are fulfilled,
the engine switches off.
Air conditioning system when the
engine is switched off
The air flow from the air conditioning system is
reduced when the engine is switched off.
Display in the instrument cluster
The display in the instrument
cluster indicates that the Auto
Start/Stop function is ready for
an automatic engine start.
Indications on the control display
Total time with switched-off engine
The total time for which the Auto Start/Stop
function has switched off the engine is dis-
played in the trip data.
The total time is automatically reset every time
the vehicle is refueled.
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 possible and
automatic climate control is switched on.
▷ Engine or other parts are not at operating
temperature.
▷ Engine cooling is required.
114
Driving
Online Edition for Part no. 01405A88034 - VI/23
▷ The wheels are at a sharp angle or the
steering wheel is being turned.
▷ Vehicle battery is heavily discharged.
▷ At higher elevations.
▷ Hood is unlocked.
▷ The Automatic Parking Assistant is acti-
vated.
▷ For stop-and-go traffic.
▷ M Steptronic Sport transmission: selector
lever in position N, S, or R.
▷ After driving in reverse.
Starting the engine
Functional requirements
The engine starts automatically under the fol-
lowing preconditions:
Manual transmission:
▷ By pressing the clutch pedal.
M Steptronic Sport transmission:
▷ By releasing the brake pedal.
▷ When Automatic Hold is activated: step on
the accelerator pedal.
Driving off
Accelerating as usual after starting the engine.
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 seat belt is unbuckled and the
driver's door is open.
▷ Hood was unlocked.
Some indicator lights illuminate for a varied
length of time.
The engine can only be started via the Start/
Stop button.
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