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You can prevent the trailer from swaying and
swerving by retrofitting stabilizer bars or
trailer stability programs. You can obtain fur‐
ther information from an authorized
Mercedes-Benz Center.
Maintain a larger distance than when driving
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without a trailer.
Avoid braking abruptly. If possible, brake gen‐
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tly first of all so that the trailer closes up
behind your vehicle. Then, increase the brak‐
ing force quickly.
The values given for gradient-climbing capa‐
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bilities from a standstill refer to sea level.
When driving in mountainous areas, note that
the engine power, and therefore its gradient-
climbing capability, decrease with increasing
altitude.
Coupling/uncoupling a trailer
Coupling a trailer
* NOTE Damage to the vehicle battery due
to full discharge
Charging the trailer battery using the power
supply of the trailer can damage the vehicle
battery.
Do not use the vehicle's power supply
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to charge the trailer battery.
Shift the selector lever to position j.
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Apply the vehicle's parking brake.
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Close all the doors.
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Position the trailer on a level surface behind
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the vehicle.
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The ball head height changes depending on
the vehicle's load. In this case, use a trailer
with a height-adjustable trailer drawbar.
Couple up the trailer.
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Establish all electrical and other connections
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to the trailer.
Remove objects or devices which prevent the
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trailer from rolling, e.g. wheel chocks.
Release the trailer's parking brake.
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The vehicle harness has a cable connection
to the brake light indicator lamp.
Observe the maximum permissible trailer dimen‐
sions (width and length).
Driving and parking 155
Most US states and all Canadian provinces pre‐
scribe the following points, and you are urgently
recommended to comply with these:
Safety chains between the towing vehicle and
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the trailer. The chains should be routed in a
criss-cross pattern under the trailer drawbar.
They must be connected to the trailer tow
hitch and not to the bumper or to the vehicle
axle.
Leave sufficient slack in the chains. This
allows for even sharp cornering.
A separate brake system is required for cer‐
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tain trailers.
A safety feature is required for braked trailers.
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Determine the specific requirements accord‐
ing to the relevant laws.
If the trailer becomes detached from the tow‐
ing vehicle, the safety feature triggers the
trailer brakes and can thus reduce the danger.
Uncoupling a trailer
& WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
inertia-activated brake, your hand may
become trapped between the vehicle and the
trailer drawbar.
Do not uncouple trailers with an
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engaged overrun brake.
Do not uncouple a trailer with an overrun brake in
a state of overrun. Otherwise, the rebound of the
overrun brake can damage your vehicle.
Shift the selector lever to position j.
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Apply the vehicle's parking brake.
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Close all the doors.
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Apply the trailer's parking brake.
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Secure the trailer against rolling away with a
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wheel chock or similar object.
Remove the trailer cables and safety chains.
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Uncouple the trailer.
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Information about towing a trailer
Operating a trailer is subject to many statutory
regulations such as speed restrictions.
Many states also require an auxiliary separate
functional braking system when towing a weight
that exceeds a certain limit. For your safety, it is
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