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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 steering
wheel, an optical warning is given rst. Display
appears in the driver's display. If the driver still
does not steer the vehicle, or gives no con rma-
tion to the system, a warning tone sounds in addi-
tion to the visual warning message.
If the driver does not react to this warning for a
considerable period, an emergency stop is initi-
ated (
page 212).
/
The warning is not issued or is stopped as soon as
the system detects that the driver has touched
the steering wheel.
Touch detection may be limited or inoperative in
the following situations:
The driver is wearing gloves.
R
There is a steering wheel cover on the steering
R
wheel.
If Active Steering Assist detects that a system
limit has been reached, a visual warning is issued
and a warning tone sounds.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers (
page 189).
/
1
Syst
System limits
em limits
Active Steering Assist has a limited steering tor-
que for lateral guidance. In some cases, the steer-
ing intervention is not su cient to keep the vehi-
cle in the lane.
Driving and parking 211
The system may be impaired or may not function
in the following instances:
There is poor visibility, e.g. due to snow, rain,
R
fog, heavy spray, greatly varying light condi-
tions or strong shadows on the carriageway.
There is glare, e.g. from oncoming tra c,
R
direct sunlight or re ections.
Insu cient road illumination.
R
The windscreen is dirty, misted up, damaged
R
or covered in the vicinity of the camera, e.g.
by a sticker.
No, or several, unclear lane markings are pres-
R
ent for one lane, or the markings change
quickly, for example, in a construction area or
junctions.
The lane markings are worn away, dark or cov-
R
ered up, e.g. by dirt or snow.
If the distance to the vehicle in front is too
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short and thus the lane markings cannot be
detected.
The road is narrow and winding.
R
There are obstacles on the lane or projecting
R
out into the lane, such as object markers.
211
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