Mercedes-Benz A-Class Operator's Manual page 191

be applied automatically. To do this, the function
uses the radar sensors in the bumper. The area
adjacent to the vehicle is continually monitored.
If the radar sensors are obstructed by vehicles
or other objects, detection is not possible.
The Cross Traffic Alert function is active under
the following conditions:
If Blind Spot Assist is activated.
R
If the vehicle is backing up at walking pace.
R
If the maneuvering assistance function is
R
activated in the multimedia system.
System limitations
The Cross Traffic Alert function is not available
on inclines.
Activating/deactivating maneuvering assis‐
tance
Multimedia system:
© Settings DriveAs-
, . .
sist Camera & Parking
.
Switch Maneuvering Assist. on or off.
#
% Maneuvering assistance must be active for
the function of Drive Away Assist
( page 187) and Cross Traffic Alert
→
( page 188).
→
ATTENTION ASSIST
Function of ATTENTION ASSIST
ATTENTION ASSIST assists you on long, monoto‐
nous journeys, e.g. on highways and trunk roads.
If ATTENTION ASSIST detects indicators of fati‐
gue or increasing lapses in concentration on the
part of the driver, it suggests taking a break.
ATTENTION ASSIST is only an aid. It cannot
always detect fatigue or lapses in concentration
in time. The system is not a substitute for a well-
rested and attentive driver. On long journeys,
take regular breaks in good time that allow for
adequate recuperation.
You can choose between two settings.
Standard: normal system sensitivity.
R
Sensitive: higher system sensitivity. The
R
driver is warned earlier and the attention
level detected by ATTENTION ASSIST is adap‐
ted accordingly.
Driving and parking 189
If drowsiness or increasing lapses in concentra‐
tion are detected, the ATTENTION ASSIST: Take
a Break! warning appears in the Instrument Dis‐
play. You can acknowledge the message and
take a break where necessary. If you do not take
a break and ATTENTION ASSIST continues to
detect increasing lapses in concentration, you
will be warned again after a minimum of
15 minutes.
You can have the following status information for
ATTENTION ASSIST displayed in the assistance
menu of the on-board computer:
The length of the journey since the last
R
break.