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Driving systems
178
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or not
occur at all:
if the length of the journey is less than approx-
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imately 30 minutes
if the road condition is poor, e.g. if the surface
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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 with
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high cornering speeds or high rates of accel-
eration
if you are predominantly driving slower than
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37 mph (60 km/h) or faster than 125 mph
(200 km/h)
if you are driving with the Steering Pilot of
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Distance Pilot DISTRONIC activated
if the time has been set incorrectly
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in active driving situations, such as when you
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change lanes or change your speed
The attention level evaluation is deleted and
restarts when the journey is continued, if:
you switch off the engine
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you take off your seat belt and open the driv-
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er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level
You can have current status information dis-
played in the assistance menu (
the on-board computer.
Select the Assistance display for ATTENTION
X
ASSIST using the on-board computer
(
page 193).
Y
The following information is displayed:
length of the journey since the last break.
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the attention level determined by ATTENTION
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ASSIST, displayed in a bar display in five levels
from high to low.
if ATTENTION ASSIST is unable to calculate
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the attention level and cannot output a warn-
ing, the
appears. The bar display then changes the
display, e.g. if you are driving at a speed below
37 mph (60 km/h) or above 125 mph
(200 km/h).
Activating ATTENTION ASSIST
Activate ATTENTION ASSIST using the on-
X
board computer (
The system determines the attention level of
the driver depending on the setting selected:
Standard selected: the sensitivity with which
the system determines the attention level is set
to normal.
Sensitive selected: the sensitivity is set higher.
The attention level detected by Attention Assist
is adapted accordingly and the driver is warned
earlier.
When ATTENTION ASSIST is deactivated, the
À symbol and OFF appear in the multifunc-
tion display in the assistance display when the
engine is running.
When ATTENTION ASSIST has been deactivated,
it is automatically reactivated after the engine
has been stopped. The sensitivity selected cor-
responds to the last selection activated (stand-
ard/sensitive).
Warning in the multifunction display
If fatigue or increasing lapses in concentration
are detected, a warning appears in the multi-
function display:
break!
In addition to the message shown in the multi-
page 192) of
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function display, you will then hear a warning
tone.
If necessary, take a break.
X
Confirm the message by pressing the a
X
button on the steering wheel.
On long journeys, take regular breaks in good
time to allow yourself to rest. If you do not take
a break, you will be warned again after
15 minutes at the earliest. The precondition for
System suspended
message
page 193).
Y
Attention Assist: Take a
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