Mercedes-Benz 2013 CL Operator's Manual page 321

ATTENTION ASSIST
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys such as on freeways
and interstate highways. It is active in the
range between 50 mph (80 km/h) and
112 mph (180 km/h).
If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take a break.
G
WARNING
ATTENTION ASSIST is only an aid and may
detect your tiredness or lapses in
concentration too late or not at all. It is not a
substitute for a well-rested and attentive
driver.
Fatigue may cause you to recognize
hazardous situations too late, misjudge a
situation or react more slowly. For this
reason, make sure you feel rested before you
begin driving and during your journey. Make
sure that you take regular breaks in time,
particularly on long journeys. Otherwise, you
may fail to recognize dangers in time, cause
an accident and injure yourself and others.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
your personal driving style, e.g. steering
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characteristics
driving conditions, e.g. time, driving time
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The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
if the road condition is poor, e.g. if the
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surface is uneven or if there are potholes
if there is a strong side wind
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if you have adopted a sporty driving style
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with high cornering speeds or high rates of
acceleration
Driving systems
if you are predominantly driving slower
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than 50 mph (80 km/h) or faster than
112 mph (180 km/h)
if you are currently using COMAND or
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making a telephone call with it
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
Activate ATTENTION ASSIST using the on-
X
board computer ( page 346).
Y
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: Drowsiness
Detected message appears in the
multifunction display.
If necessary, take a break.
X
Press a to confirm the message.
X
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. The
precondition for this is that
ATTENTION ASSIST still detects typical
indicators of fatigue or increasing lapses in
concentration.
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