BMW Z4 ROADSTER Owner's Manual page 124

CONTROLS
▷ Stop-and-go traffic.
▷ Steptronic transmission: selector lever posi-
tion in N or R.
▷ After driving in reverse.
▷ Use of fuel with high ethanol content.
Starting the engine
Functional requirements
Manual transmission
The engine starts automatically under the fol-
lowing preconditions:
▷ By pressing the clutch pedal.
Steptronic transmission
The engine starts automatically under the fol-
lowing preconditions:
▷ By releasing the brake pedal.
▷ When Automatic Hold is activated: step on
the accelerator pedal.
Driving off
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 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.
System limits
Even if driving off was not intended, the deac-
tivated engine starts up automatically in the
following situations:
124
Driving
Online Edition for Part no. 01405A88B63 - VI/23
▷ In case of excessive warming of the interior
when air conditioning is turned on.
▷ In case of excessive cooling of the interior
when the heating is turned on.
▷ In case of a risk of window condensa-
tion when the automatic climate control is
turned on.
▷ Without mild hybrid technology: in case of a
steering operation.
▷ Steptronic transmission:
When changing from selector lever position
D to N or R.
▷ Steptronic transmission:
When changing from selector lever position
P to N, D, or R.
▷ In case of seriously discharged vehicle bat-
tery.
▷ When starting an oil level measurement.
Additional functions Auto Start/Stop
Depending on the equipment and national-
market version, the vehicle features a variety of
sensors for assessing the traffic situation. The
Auto Start/Stop function uses this information
to adapt to various traffic situations in an antic-
ipatory manner.
For instance, this applies to the following sit-
uations:
▷ A situation is detected in which the stop-
ping time is expected to be very short. The
engine is not automatically switched off. A
message appears on the control display,
depending on the situation.
▷ A situation is detected in which the vehi-
cle should be started up immediately. The
switched-off engine starts automatically.
The function may be restricted if the naviga-
tion data is invalid, outdated or not available,
for example.
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