Mercedes-Benz 2013 GLS Class - Manual (Page 221)

X Set the height of trailer drawbar ; so that
it is slightly higher than the ball coupling.
X Position the vehicle centrally in front of
trailer drawbar ;.
:
Red guide line at a distance of approx-
imately 0.30 m from the ball coupling
;
Trailer drawbar locating aid
=
Trailer drawbar
?
Symbol for the "Coupling up a trailer"
function
X Use the COMAND controller to select sym-
bol ?; see the separate operating instruc-
tions for 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 the trailer draw-
bar.
X Reverse carefully until trailer drawbar =
reaches red guide line :.
The distance between the trailer drawbar
and the red guide line is now approximately
0.30 m.
X Couple up the trailer ( Y page 237).
ATTENTION ASSIST
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.
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.
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
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 80 km/h or faster than 180 km/h
R
if you are currently using COMAND Online
or making a telephone call with COMAND
Online
R
if the time has been set incorrectly
R
in active driving situations, such as when
you change lanes or change your speed
Driving systems
219
Driving and parking
Z