:
Vehicle centre point on the red guide line
at a distance of approximately 0.25 m
from the rear area
;
Vehicle centre point on the yellow guide
line at a distance of approximately 1.0 m
from the rear area
=
Trailer drawbar
?
Ball coupling
X
Set the height of trailer drawbar
=
so that
it is slightly higher than ball coupling
?
.
X
Position the vehicle centrally in front of
trailer drawbar
=
.
:
Ball coupling
;
Red guide line at a distance of approx-
imately 0.25 m from the ball coupling
=
Trailer drawbar marker assistant
?
Trailer drawbar
A
Symbol for the "Coupling up a trailer"
function
X
Use the COMAND controller to select sym-
bol
A
. See the separate operating instruc-
tions for COMAND.
The "Coupling up a trailer" function is selec-
ted. The distance specifications now only
apply to objects that are at the same level
as the ball coupling.
X
Reverse carefully, making sure that trailer
drawbar marker assistant
=
points
approximately in the direction of trailer
drawbar
?
.
X
Reverse carefully until trailer drawbar
?
reaches red guide line
;
.
X
Couple up the trailer (
Y
page 226).
ATTENTION ASSIST
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys such as on motorways
and trunk roads. It is active in the 80 km/h
to 180 km/h range.
If ATTENTION ASSIST detects typical indica-
tors of fatigue or increasing lapses in con-
centration on the part of the driver, it sug-
gests taking a break.
G
WARNING
ATTENTION ASSIST is only an aid and may
detect your tiredness or lapses in concentra-
tion too late or not at all. It is not a substitute
for a well rested and attentive driver.
Fatigue may cause you to recognise hazard-
ous situations too late, misjudge a situation
or react slower. For this reason, make sure
you feel rested before you begin driving and
during your journey. Always take breaks in
good time and regularly, especially during
long journeys. Otherwise, you may fail to rec-
ognise dangers in time, cause an accident and
injure yourself and others.
202
Driving systems
Dr
iving
and
parki
ng
