Mercedes-Benz 2012 A Class - Manual (Page 198)

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if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
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if you are predominantly driving slower
than 80 km/h or faster than 180 km/h
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if you are currently using COMAND Online
or making a telephone call with COMAND
Online
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if the time has been set incorrectly
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in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display
X Activate ATTENTION ASSIST using the on-
board computer (
Y page 219).
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after
your journey has begun. You then hear an
intermittent warning tone twice and the
Attention Assist: Take a break!
message appears in the multifunction dis-
play.
X If necessary, take a break.
X Press the a or % button to confirm
the message.
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:
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you switch off the engine
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you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction
display in the assistance graphic display.
Speed Limit Assist
General 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
Important safety notes
Speed Limit Assist is only an aid and does not
always detect traffic signs specifying the
maximum permissible speed. Traffic signs
always have priority over the Speed Limit
Assist display.
The system may be impaired or may not func-
tion if:
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there is poor visibility, e.g. due to snow,
rain, fog or spray
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there is glare, e.g. from the sun or from
oncoming traffic
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the windscreen is dirty, misted up or cov-
ered, for instance by a sticker, in the vicinity
of the camera
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the traffic signs are covered, for instance
by dirt, snow or trees
196
Driving systems
Driving and parking