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Safety information
WARNING
The system does not relieve from per‐
sonal responsibility to assess 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 an accident. Make sure
that the driver is rested and alert. Adjust driv‐
ing style to traffic conditions.◀
Function
The system is switched on each time drive-
ready state is switched on.
After travel has begun, the system monitors
certain aspects of the driver's behavior, so that
decreasing alertness or fatigue can be de‐
tected.
This procedure takes the following criteria into
account:
▷ Personal driving style, for instance steering
behavior.
▷ Driving conditions, for instance length of
trip.
Starting at approx. 43 mph/70 km/h, the sys‐
tem is active and can also display a recom‐
mendation to take a break.
Break recommendation
Switching on/off, adjusting
The alertness assistant is active automatically
with each switching on of drive-ready state and
can thus display a break recommendation.
The break recommendation can also be
switched on or off and adjusted via iDrive.
Using iDrive:
1.
"My Vehicle"
2. "Vehicle settings"
3. "Driver attention control"
4. Select the desired setting.
▷ "Off": no break recommendation is
made.
▷ "Standard": the break recommendation
is made with a defined value.
▷ "Sensitive": the break recommendation
is issued earlier.
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, the following settings can
be selected:
▷ "Do not ask again"
▷ "Places to stop"
▷ "Remind me later"
The break recommendation is repeated af‐
ter 20 minutes.
After a break, another recommendation to take
a break cannot be displayed until after approxi‐
mately 45 minutes.
System limits
The function may be limited in the following
situations, e.g., and will either output an incor‐
rect warning or no warning at all:
▷ When the clock 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 surface is poor.
▷ In the event of strong side winds.
The system is reset approx. 45 minutes after
parking the vehicle, e.g., in the case of a break
during longer trips on highways.
Seite 187
Safety Controls
187
Online Edition for Part no. 01402981865 - VI/17
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