Mercedes-Benz E-Class Operator's Manual page 203

The system may be impaired or may not
function if:
there is poor visibility, e.g. due to
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insufficient illumination of the road, or due
to snow, rain, fog or spray
there is glare, e.g. from oncoming traffic,
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the sun or reflections (e.g. when the road
surface is wet)
the windshield is dirty, fogged up, damaged
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or covered, for instance by a sticker, in the
vicinity of the camera
no, or several, unclear lane markings are
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present for one lane, e.g. in a construction
area
the lane markings are worn away, dark or
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covered up, e.g. by dirt or snow
the distance to the vehicle in front is too
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small and the lane markings thus cannot be
detected
the lane markings change quickly, e.g.
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lanes branch off, cross one another or
merge
the road is narrow and winding
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there are strong shadows cast on the lane
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Pay attention also to the important safety
notes for DISTRONIC PLUS (
The steering interventions are carried out
with a limited steering moment. The system
requires the driver to keep his hands on the
steering wheel and to steer himself.
If you do not steer yourself or if take your
hands off the steering wheel for a prolonged
period of time, the system will first alert you
with a visual warning. A steering wheel
symbol appears in the multifunction display.
If you have still not started to steer and have
not taken hold of the steering wheel after five
seconds, a warning tone also sounds to
remind you to take control of the vehicle.
DISTRONIC PLUS Steering Assist is then
switched to passive. DISTRONIC PLUS
remains active.
The system is switched to passive and no
longer assists you by performing steering
interventions if:
you actively change lanes
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you switch on the turn signal
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take your hands off the steering wheel or
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do not steer for a prolonged period of time
i
DISTRONIC PLUS Steering Assist is
automatically active once more.
DISTRONIC PLUS Steering Assist does not
provide assistance:
on very sharp corners
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if no lane markings or no clear lane
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markings have been detected
if the vehicle in front is not detected at
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speeds below 37 mph (60 km/h)
in tire run-flat mode
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Activating Steering Assist
Select the DISTRONIC PLUS with Steering
X
Assist function using the on-board
computer (
The
message appears in the multifunction
page 192).
Y
display. DISTRONIC PLUS Steering Assist
is activated.
Information in the multifunction display
If DISTRONIC PLUS Steering Assist is
activated but is not ready for a steering
intervention, steering wheel symbol :
appears in grey. If the system provides you
with support by means of steering
interventions, symbol : is shown in green.
Driving systems
After you have finished changing lanes,
page 248).
Y
DTR+: Steering Assistant On DTR+: Steering Assistant On
201
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