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Steering and touch detection
The driver is required to keep their hands on the
steering wheel at all times and be able to inter‐
vene at any time to correct the course of the
vehicle and keep it in lane. The driver must
expect a change from active to passive mode or
vice versa at any time.
If the system reaches a system limitation or the
driver has not steered the vehicle for a consider‐
able period of time or has removed their hands
from the steering wheel, the system will,
depending on the situation, alert the driver
either with a visual warning or a visual and
acoustic warning. Display
1 appears in the mul‐
tifunction display.
If the driver does not steer the vehicle over a
long period, or has not taken hold of the steering
wheel, a repeated warning tone sounds in addi‐
tion to the visual warning message (depending
on the country).
The warning message does not appear or disap‐
pears if one of the following conditions are met:
R
The driver steers the vehicle.
R
The driver presses a steering wheel button or
operates Touch Control.
Active Steering Assist is only an aid. The driver is
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good time
and for staying in lane. Before changing lanes,
the driver must make sure that the neighboring
lane is free (glance over the shoulder).
System limitations
Active Steering Assist has a limited steering tor‐
que for lateral guidance. In some cases, the
steering intervention is not sufficient to keep the
vehicle in the lane or to drive past exits.
The system may be impaired or may not function
in the following instances:
R
In snow, rain, fog, heavy spray, if there is
glare, direct sunlight, greatly varying ambient
light, reflections or strong shadows on the
roadway.
R
Insufficient road illumination.
R
The windshield in the area of the camera is
dirty, fogged up, damaged or covered.
R
Absence of lane markings, or several unclear
lane markings, or if the markings change rap‐
idly.
R
The distance to the vehicle in front is too
small and the lane markings thus cannot be
detected.
R
The road is narrow and winding.
R
Obstacles on the lane or projecting out into
the lane.
The system does not provide assistance in the
following conditions:
R
On tight bends, intersections, toll stations,
traffic circles and when turning.
176
Driving and parking
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