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DRIVER SUPPORT
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* Option/accessory.
365
Limitations of Driver Alert Control
The Driver Alert Control (DAC) function may
have limitations in certain situations.
In some cases the system may issue a warning
despite driving ability not deteriorating, for exam-
ple:
•
in strong side winds
•
on rutted road surfaces.
WARNING
In some cases, driving behaviour is not affec-
ted despite driver fatigue – e.g. when using
the Pilot Assist function – resulting in the
driver not getting a warning from DAC.
It is therefore important to always stop and
take a break at the slightest feeling of fatigue,
whether the DAC function ha given a warning
or not.
NOTE
The function uses the car's camera unit,
which has some general limitations, see the
"Limitations for camera unit" section.
Related information
•
Driver Alert Control (p. 363)
•
Activate/deactivate Driver Alert Control
(p. 364)
•
Limitations of the camera unit (p. 333)
•
Pilot Assist* (p. 307)
Lane Keeping Aid
The function of the Lane Keeping Aid (LKA
84
) is
to help the driver to reduce the risk of the car
accidentally leaving its own lane on motorways
and similar major routes.
Lane Keeping Aid steers the car back into its
lane and/or alerts the driver with vibrations in the
steering wheel.
Lane Keeping Aid is active within the speed
range 65-200 km/h (40-125 mph) on roads with
clearly visible side lines.
On narrow roads the function may be unavailable,
in which case it goes into standby mode. The
function becomes available again when the road
is wide enough.
A camera reads the side lines of the road/lane.
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