Mercedes-Benz E-CLASS 2009 Manual page 238

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Grasp release wheel ; with your hand
X
such that the thumb is in the thumb rest
and turn it anti-clockwise.
The ball coupling disengages and folds out
from under the rear bumper. Indicator
lamp : flashes.
Pull the ball coupling in the direction of the
X
arrow until it engages in a vertical position.
Indicator lamp : goes out.
The multi-function display shows the
Trailer hitch Check lock mech. mes-
sage until the ball coupling is engaged.
Remove the protective cap from the ball
X
coupling and store it in a safe place.
Make sure that the ball of the ball coupling
X
is clean and that, depending on the trailer
specification, it is greased or dry (without
grease) when used.
The power socket is integrated in the ball
coupling.
Notes on towing a trailer
G Risk of accident
When reversing the vehicle towards the
trailer, make sure there is nobody between
the trailer and the vehicle.
Couple and uncouple the trailer carefully. If
you do not couple the trailer to the towing
vehicle correctly, the trailer could become
detached.
* optional
Version: 2.11.8.1
Make sure that the following values are not
exceeded:
the permissible trailer drawbar noseweight
R
the permissible trailer load
R
the permissible rear axle load of the towing
R
vehicle
the maximum permissible gross vehicle
R
weight of both the towing vehicle and the
trailer
You will find the applicable permissible val-
ues, which must not be exceeded, in the vehi-
cle documents.
You will find the values approved by the man-
ufacturer on the vehicle identification plates
and those for the towing vehicle in the "Tech-
nical data" section.
i
When towing a trailer, set the tyre pres-
sure on the rear axle of the towing vehicle
for a maximum load; see the tyre pressure
table in the fuel filler flap.
You will find installation dimensions and loads
in the "Technical data" section
( page 356).
Y
The maximum drawbar load of the trailer
drawbar on the ball coupling is 84 kg. How-
ever, the actual noseweight must not exceed
the value given on the trailer coupling or
trailer identification plates. The lowest weight
applies.
! Use a noseweight as close as possible to
the maximum permissible noseweight. Do
not use a noseweight of less than 50 kg,
otherwise the trailer may come loose.
Bear in mind that the payload and the rear
axle load are reduced by the actual nose-
weight.
Please note that when towing a trailer, PARK-
TRONIC* ( page 159), parking guid-
Y
ance* ( page 162) and Blind Spot
Y
Assist* ( page 261) are only available with
Y
limitations, or not at all.
Trailer towing
235
Z