Mercedes-Benz E-Class 2011 Owner's Manual page 211

Driving systems
208
if you are currently using COMAND APS or
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making a telephone call with COMAND APS
if the time has been set incorrectly
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in active driving situations, such as when
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you change lanes or change your speed
Warning and display messages in the
multifunction display
Example: vehicles featuring automatic transmis-
sion with a DIRECT SELECT lever
Activate ATTENTION ASSIST using the on-
X
board computer (
Symbol : appears in the multifunction
display.
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after your
journey has begun. You will then hear an
intermittent warning tone twice, and the
Attention Assist: Time for a break?
message appears in the multifunction dis-
play.
If necessary, take a break.
X
Press the a button to confirm the mes-
X
sage.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break, you will be warned again
after 15 minutes at the earliest. This will only
happen if ATTENTION ASSIST still detects
typical indicators of fatigue or increasing lap-
ses in concentration.
ATTENTION ASSIST is reset and starts
assessing your tiredness again when you con-
tinue your journey if:
you switch off the engine.
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you take off your seat belt and open the
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driver's door, e.g. for a change of drivers or
to take a break.
page 242).
Y
Speed Limit Assist
Important safety notes
Speed Limit Assist shows you detected speed
limits in the multifunction display. Data from
the navigation system is also used for this
purpose. If a traffic sign indicating a speed
limit or the end of a speed limit is detected,
it is shown in the multifunction display. If
Speed Limit Assist does not detect any traffic
signs, the speed limit from the digital road
map is taken and shown in the display.
Speed Limit Assist detects the traffic signs
with a camera attached behind the top of the
windscreen.
Speed Limit Assist camera
:
G WARNING
Speed Limit Assist is only an aid and may
detect speed limit signs incorrectly or not at
all.
The system may be impaired or may not func-
tion if:
there is poor visibility, e.g. due to snow,
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rain, fog or spray.
there is glare, e.g. from the sun or from
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oncoming traffic.
the windscreen is dirty, misted up or cov-
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ered, for instance by a sticker, in the vicinity
of the camera.
the traffic signs are covered, for instance
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by dirt, snow or trees.