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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
accident. 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 to
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.
▷
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.
Break recommendation
Setting break recommendation
The fatigue alert is active automatically each
time the drive-ready state is switched on and
can thus display a break recommendation.
The break recommendation can also be
switched on or off and adjusted via iDrive.
1.
"MENU"
2.
"Vehicle apps"
Online Edition for Part no. 01405A5F6E0 - VI/22
Safety
3.
"Driving settings"
4.
"Driver Assistance"
5.
"Safety and warnings"
6.
"Fatigue Alert"
7.
Select the desired setting.
Display
If the driver becomes less alert or fatigued, a
message is displayed in the Control Display
with the recommendation to take a break.
During the display, various settings can be se-
lected.
After a break, another break recommendation
cannot be displayed until after approximately
45 minutes.
System limits
System functionality may be limited. If system
functionality is limited, either no warning is is-
sued or an incorrect warning is issued. The
system function may be limited in the following
situations:
▷
When the time is set incorrectly.
▷
When the vehicle speed is mainly below
about 43 mph/70 km/h.
▷
With a sporty driving style, such as during
rapid acceleration or when cornering fast.
▷
In active driving situations, such as when
changing lanes frequently.
▷
When the road condition is poor.
▷
In the event of strong side winds.
The system is reset approx. 45 minutes after
parking the vehicle, for instance in the case of
a break during longer trips on highways.
CONTROLS
195
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