Mercedes-Benz S-Class Coupe 2018 Operator's Manual page 170

168 Driving and parking
Active Steering Assist
Function of Active Steering Assist
Active Steering Assist assists the driver at
speeds up to 130 mph (210 km/h) and helps the
driver to stay in the center of the lane by means
of moderate steering interventions. The system
orients itself using detected lane markings.
Depending on the speed driven, Active Steering
Assist uses the vehicles ahead as a reference. If
the detection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches to passive mode. The system does not
provide support in the form of steering interven‐
tions.
The driver is required to keep their hands on
R
the steering wheel at all times and be able to
intervene at any time to correct the course of
the vehicle and keep it in lane.
The status of Active Steering Assist is dis‐
R
played in the status bar of the multifunction
display.
Steering and contact detection
The driver is required to keep their hands on the
steering wheel at all times and to be able to
intervene at any time. 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, first alert the driver
with a visual warning. Display 1
multifunction display. If the driver still does not
steer the vehicle, or still has not taken hold of
the steering wheel, a repeated warning tone
sounds in addition to the visual warning mes‐
sage to remind the driver to take control of the
vehicle.
The warning message does not appear or disap‐
pears if one of the following conditions are met:
The driver steers the vehicle.
R
The driver presses a steering wheel button or
R
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).
appears in the