BMW i4 GRAN COUPE 2022, Owner'S Manual

Page: 192 / 368

the belt tension does not loosen automatically,
stop the vehicle and unbuckle the seat belt us-
ing the red button in the buckle. Fasten the
seat belt before continuing to drive. All other
systems can be restored to the desired setting.
PostCrash – iBrake
Principle
In certain accident situations, the PostCrash
iBrake can automatically bring the vehicle to a
standstill without intervention by the driver.
General information
The PostCrash iBrake can reduce the risk of a
further collision and its consequences.
At standstill
After coming to a halt, the brake is released
automatically.
Harder vehicle deceleration
In certain situations, it can be necessary to
bring the vehicle to a halt more quickly than
with automatic brake actuation.
To do this, quickly apply extra force to the
brake. For a brief period, the brake pressure
will be higher than the brake pressure that is
achieved by the automatic braking function.
Automatic brake actuation is interrupted.
Canceling automatic braking
It can be necessary to interrupt automatic
braking in certain situations, for instance for an
evasive maneuver.
Canceling automatic braking:
▷ By pressing the brake pedal.
▷ By pressing the accelerator pedal.
Fatigue alert
Principle
The Fatigue Alert can detect decreasing alert-
ness or fatigue of the driver during long, mo-
notonous trips, for instance on highways. The
system recommends a break.
Safety information
Warning
The system cannot serve as a substitute for
the driver’s personal judgment in assessing
one's physical state. An increasing lack of
alertness or fatigue may not be detected or
not be detected in time. There is a risk of ac-
cident. Make sure that the driver is rested
and alert. Adjust driving style to traffic condi-
tions.
Function
The system is switched on each time drive-
ready state is switched on.
After starting the trip, the system is trained for
the driver, so that decreasing alertness or fati-
gue can be detected.
This procedure takes the following criteria into
account:
▷ Personal driving style, for instance steering
behavior.
▷ Driving conditions, for instance time, length
of trip.
▷ Depending on the equipment: attention of
the driver through the Driver Attention
Camera.
Starting at approx. 43 mph/70 km/h, the sys-
tem is active and can also display a break rec-
ommendation.
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CONTROLS Safety
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Online Edition for Part no. 01405A546C7 - II/22