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switches to passive mode. The system provides
no support in this case. During the transition
from active to passive status, the à symbol is
shown as enlarged and flashing. Once the sys‐
tem is passive, the à symbol is shown as
gray in the multifunction display.
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 detects that the driver has not
steered the vehicle for a considerable period of
time or has removed their hands from the steer‐
ing wheel, an optical warning is given first. Dis‐
play 1 appears in the multifunction display. If
the driver still does not steer the vehicle, or
gives no confirmation to the system, a warning
tone sounds in addition to the visual warning
message.
The warning is not issued, or is stopped, when
the driver gives confirmation to the system:
R
The driver steers the vehicle.
R
The driver presses a steering wheel button or
operates Touch Control.
If Active Steering Assist detects that a system
limit has been reached, a visual warning is
issued and a warning tone sounds.
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 limits
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 through exits.
The system may be impaired or may not function
in the following instances:
R
There is poor visibility, e.g. due to snow, rain,
fog, heavy spray, greatly varying ambient
light or strong shadows on the roadway.
R
There is glare, e.g. from oncoming traffic,
direct sunlight or reflections.
R
Insufficient road illumination.
R
The windshield is dirty, fogged up, damaged
or covered in the vicinity of the camera, e.g.
by a sticker.
R
No, or several, unclear lane markings are
present for one lane, or the markings change
quickly, e.g. in a construction area or inter‐
sections.
R
The lane markings are worn away, dark or
covered up, e.g. by dirt or snow.
Driving and parking
181
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