Mercedes-Benz CLA Operator's Manual page 195

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
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approximately 30 minutes
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 37 mph (60 km/h) or faster than
125 mph (200 km/h)
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
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again 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
Displaying the attention level
You can have current status information dis-
played in the assistance menu (
of the on-board computer.
Select the Assistance display for Attention
X
Assist using the on-board computer
( page 209).
Y
The following information is displayed:
length of the journey since the last break.
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the attention level determined by ATTEN-
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TION ASSIST
played 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 issue 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 124 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:
Selection
which the system determines the attention
level is set to normal.
Selection
higher. The attention level detected by Atten-
tion Assist is adapted accordingly and the
driver is warned earlier.
When ATTENTION ASSIST is deactivated, the
é symbol appears in the multifunction
display in the assistance graphic display.
When ATTENTION ASSIST has been deactiva-
ted, it is automatically reactivated after the
engine has been stopped. The sensitivity
selected corresponds to the last selection
activated (standard/sensitive).
Warning in the multifunction display
If fatigue or increasing lapses in concentra-
page 209)
tion are detected, a warning appears in the
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multifunction display:
Take a Break! Take a
In addition to the message shown in the mul-
tifunction display, you will then hear a warn-
ing tone.
Driving systems
(Attention Level Attention Level), dis-
System Suspended System Suspended
page 210).
Y
Standard: the sensitivity with Standard
Sensitive: the sensitivity is set Sensitive
ATTENTION ASSIST ATTENTION ASSIST
Break!.
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message
Z