Mercedes-Benz S-Class 2020 Owner's Manual page 251

248 Driving and parking
Active Traffic Jam Assist activates automatically
when all of the following conditions are met:
You are in a traffic jam on a motorway or
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high-speed major road.
Active Distance Assist DISTRONIC is activa‐
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ted and active ( page 243).
/
Active Steering Assist is activated and active
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( page 250).
/
You are travelling no faster than 60 km/h.
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When Active Traffic Jam Assist is active the ¬
status display appears in the driver display.
System limits
The system limitations of Active Distance Assist
DISTRONIC and Active Steering Assist apply to
Active Traffic Jam Assist ( page 248).
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Active Steering Assist
Function of Active Steering Assist
Active Steering Assist is only available up to a
speed of 210 km/h. The system helps you to
stay in the centre of the lane by means of mod‐
erate steering interventions. Depending on the
speed driven, Active Steering Assist uses the
vehicles ahead and lane markings as a refer‐
ence.
% Depending on the country, in the lower
speed range Active Steering Assist can use
the surrounding traffic as a reference. If nec‐
essary, Active Steering Assist can then also
provide assistance when driving outside the
centre of the lane.
If the detection of lane markings and vehicles
ahead is impaired, Active Steering Assist
switches to passive mode. The system provides
no support in this case.
Permanent status display in the driver dis‐
play
Ø Grey: activated and passive
Ø Green: activated and active
Ø Red, flashing: prompt to the driver to
actively confirm or transition from active
to passive status, system limit detected
% During the transition from active to passive
status, the Ø symbol is shown as
enlarged and flashing. Once the system is
passive, the Ø symbol is shown as grey in
the driver display.
Contact 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 message 1 appears in the driver display. If