Mercedes-Benz G 550 2015 Operator's Manual page 143

Secure the bolt using spring cotter D.
X
Correctly installed and secured ball coupling
Check the ball coupling, bolt and spring
X
cotter for correct installation.
Coupling up a trailer
G
WARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun brake
is engaged.
! Do not connect the trailer's brake system
(if featured) to the hydraulic brake system
of the towing vehicle, as the latter is equip-
ped with an anti-lock brake system. Doing
so will result in a loss of function of the
brake systems of both the vehicle and the
trailer.
Observe the maximum permissible trailer
dimensions (width and length).
Towing a trailer
Most U.S. states and all Canadian provinces
require by law:
safety chains between the towing vehicle
R
and the trailer. The chains should be cross-
wound under the trailer drawbar. They must
be fastened to the vehicle's trailer cou-
pling, not to the bumper or the axle.
Allow for enough play in the chains to facil-
itate turning tight corners.
a separate brake system for certain types
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of trailer.
a safety switch for braked trailers. Check
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the specific legal requirements applicable
to your state.
If the trailer detaches from the towing vehi-
cle, the safety switch applies the trailer's
brakes.
Make sure that the automatic transmission
X
is set to position P.
Apply the vehicle's parking brake.
X
Couple up the trailer.
X
Establish all electrical connections.
X
Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed
restrictions. Make sure that your vehicle/
trailer combination complies with the local
requirements not only in your area of resi-
dence but also at any location to which you
are traveling. The police and local authorities
can provide reliable information.
Please observe the following when towing a
trailer:
To acquaint yourself with driving with a
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trailer and with the resulting changes to
handling, you should practice cornering,
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