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:
Vehicle centre point on the yellow guide
line at a distance of approximately 1.0 m
from the rear of the vehicle
;
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 locating aid
?
Trailer drawbar
A
Symbol for the "Coupling up a trailer"
function
X
Select symbol A with the Audio/COMAND
controller; see the separate operating
instructions for the audio system/
COMAND Online.
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 locating aid = points approx-
imately in the direction of trailer draw-
bar ?.
X
Reverse carefully until trailer drawbar ?
touches red guide line ;.
X
Couple up the trailer (Y page 201).
ATTENTION ASSIST
General 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.
Important safety notes
ATTENTION ASSIST is only an aid. It cannot
always detect fatigue or lapses in concentra-
tion until too late or not at all. The system is
not a substitute for a well-rested and atten-
tive driver.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
R
your personal driving style, e.g. steering
characteristics
R
journey-related parameters, e.g. time of
day, length of journey
The functionality of ATTENTION ASSIST is
restricted, and warnings may be delayed or
not occur at all:
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
Driving systems
195
Driving and parking
Z
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