Mercedes-Benz A-Class Operator's Manual page 174

172 Driving and parking 172
Ø (red): system limits detected
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Ø (white, red hands): "hands on the steer-
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ing wheel" prompt
%
During the transition from active to passive
status, the Ø symbol is shown as enlarged
and ashing. Once the system is passive, the
Ø symbol is shown as gray in the Instru-
ment Display.
% Depending on the selected vehicle settings,
Active Steering Assist may be unavailable.
S S t t eer eering and t ing and touc ouch det h detection ection
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 vehi-
cle 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 steering
wheel, display 1 appears. If the driver still does
not steer the vehicle, a warning tone sounds in
addition to the visual warning message.
If the driver does not react to the warning for a
considerable period, the system can initiate an
emergency stop ( page 173).
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The warning is not issued or is stopped when the
driver gives con rmation to the system:
The driver steers the vehicle.
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Depending on t Depending on the country he country: : the driver presses
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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.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize
dangers ( page 155).
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System limits Syst 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 or to drive through exits.
The system may be impaired or may not function
in the following instances:
There is poor visibility, e.g. due to snow, rain,
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fog, heavy spray, greatly varying ambient light
or strong shadows on the road.
There is glare, e.g. from oncoming tra c,
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direct sunlight or re ections.
Insu cient road illumination.
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