Blind Spot Assist - Mercedes-Benz B-Class Electric Drive W245 Operator's Manual

If ATTENTION ASSIST detects typical indica-
tors of fatigue or increasing lapses in con-
centration on the part of the driver, it sug-
gests you take a break.
Important safety notes
ATTENTION ASSIST is only an aid to the
driver. It might not always recognize fatigue
or increasing inattentiveness in time or fail to
recognize them at all. The system is not a
substitute for a well-rested and attentive
driver.
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
journey details, e.g. time of day and length
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of journey
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 sur-
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face 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
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 mak-
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ing 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 (
Y
If ATTENTION ASSIST is active, you will be
warned no sooner than 20 minutes after
your journey has begun. You then hear an
page 184).
Driving systems
intermittent warning tone twice and the
Attention Assist: Take a Break! Attention Assist: Take a Break!
message appears in the multifunction dis-
play.
If necessary, take a break.
X
Press the a or % button to confirm
X
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. The precon-
dition for this is that ATTENTION ASSIST still
detects typical indicators of fatigue or
increasing lapses in concentration.
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again if:
you switch off the drive system.
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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.
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction
display in the assistance graphic display.

Blind Spot Assist

General notes
Blind Spot Assist uses a radar sensor system
to monitor the areas on both sides of your
vehicle. It supports you from a speed of
approximately 20 mph (30 km/h). A warning
display in the exterior mirrors draws your
attention to vehicles detected in the moni-
tored area. If you then switch on the corre-
sponding turn signal to change lanes, you will
also receive a visual and audible collision
warning. For this purpose, Blind Spot Assist
uses sensors in the rear bumper.
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