Mercedes-Benz CLA-Class 2015 - Manual (Page 195)

The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R
if the length of the journey is less than
approximately 30 minutes
R if the road condition is poor, e.g. if the sur-
face is uneven or if there are potholes
R
if there is a strong side wind
R
if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R
if you are predominantly driving slower
than 37 mph (60 km/h) or faster than
125 mph (200 km/h)
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
ATTENTION ASSIST is reset when you con-
tinue your journey and starts assessing your
tiredness again if:
R you switch off the engine
R
you take off your seat belt and open the
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 (
Y
page 209)
of the on-board computer.
X
Select the Assistance display for Attention
Assist using the on-board computer
(
Y
page 209).
The following information is displayed:
R length of the journey since the last break.
R the attention level determined by ATTEN-
TION ASSIST ( Attention Level Attention Level ), dis-
played in a bar display in five levels from
high to low
R If ATTENTION ASSIST is unable to calculate
the attention level and cannot issue a warn-
ing, the System Suspended System Suspended message
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
X Activate ATTENTION ASSIST using the on-
board computer (
Y
page 210).
The system determines the attention level
of the driver depending on the setting
selected:
Selection Standard Standard : the sensitivity with
which the system determines the attention
level is set to normal.
Selection
Sensitive Sensitive : the sensitivity is set
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-
tion are detected, a warning appears in the
multifunction display: ATTENTION ASSIST ATTENTION ASSIST
Take a Break! Take a Break! .
In addition to the message shown in the mul-
tifunction display, you will then hear a warn-
ing tone.
Driving systems
193
Driving
and
parking
Z