Owners Manual

combination weight can lead to damage to
the drivetrain, to the transmission or to the
trailer tow hitch.
If the vehicle or the trailer is fully laden, the
relevant value for the permissible gross
vehicle weight or the permissible trailer
load is therefore lower. In this case, the
trailer or the vehicle may only be partially
loaded.
The permissible values, which must not be
exceeded, can be found in your vehicle
documents and on the trailer tow hitch type
plates for the trailer and the vehicle
(Y page 285). The basic values approved by
the manufacturer can also be found in the
"Technical data" section (Y page 291).
Where the values differ, the lowest is always
valid.
Loading a trailer
R
You must distribute the load on the vehicle
and trailer so that the permitted maximum
values for the gross vehicle weight (GVWR),
gross trailer weight (GTW) and gross
combined weight (GCWR) as well as
permitted gross axle loads (GAWR) and
noseweight (TWR) of your vehicle are not
exceeded.
R
Add the drawbar noseweight on the ball
coupling (TWR) to the rear axle load. This
will prevent you from exceeding the
permissible gross axle weight (GAWR).
R
Add the drawbar noseweight on the ball
coupling (TWR) to the vehicle payload. This
will prevent you from exceeding the
permissible gross vehicle weight (GVWR).
!
Utilize the maximum permissible
noseweight as fully as possible. Do not
allow the weight to fall below the minimum
permissible noseweight, otherwise the
trailer may come loose.
Checking the vehicle and trailer weight
R
Make sure the weights of the towing vehicle
and the trailer comply with the maximum
permissible values. Have the vehicle/
trailer combination weighed on a calibrated
weighbridge. The vehicle/trailer
combination consists of the towing vehicle
including the driver, passengers and load,
as well as the loaded trailer.
R
Check the permissible axle load of the front
and rear axle (GAWR), the gross weight of
the trailer (GTW), the gross combination
weight (GCWR) and the trailer drawbar
noseweight (TWR).
Trailer power supply
Your vehicle may be equipped with various
electrical installations for trailer towing.
Depending on your trailer, you may need an
adapter to connect the electrical system of
the trailer with that of the vehicle. The turn
signals on the trailer are only guaranteed to
function when incandescent bulbs are used.
Information on the current electrical
equipment of your vehicle is available at any
qualified specialist workshop.
!
Incorrect wiring of the connector plug
could, under certain circumstances, cause
malfunctions in the vehicle's other
electronic systems. We therefore
recommend having the connector plug
wired at a qualified specialist workshop.
The trailer socket of your vehicle is equipped
at the factory with a permanent power supply.
The permanent power supply is on the trailer
socket pin assignment 4.
Note that the permanent power supply of the
trailer is not switched off when the on-board
voltage is low. This can completely discharge
the starter battery of your vehicle.
!
You can connect accessories with a
maximum power consumption of 240 W to
the permanent power supply.
Towing a trailer
155
Operation
Z