Mercedes-Benz GLE Operator's Manual page 252

250 Driving and parking
Do not change the ball neck or the
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trailer hitch.
The values approved by the manufacturer can be
found on the identification plates and in the
"Technical data" section under "Trailer hitch" for
the towing vehicle ( page 385).
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& WARNING Swerving of the vehicle/
trailer combination due to increased
speed
You could lose control of the vehicle/trailer
combination.
The vehicle/trailer combination may even tip
over.
Under no circumstances should you try
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to straighten the vehicle/trailer combi‐
nation by increasing the speed.
Reduce your speed and do not counter‐
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steer.
If necessary, apply the brakes.
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* NOTE Damage to the engine as a result
of overheating
If you retrofit a trailer hitch, modifica‐
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tions to the engine cooling system may
be necessary, depending on the vehicle
model.
When retrofitting a trailer hitch, observe the
fastening points on the chassis.
Retrofitting a trailer hitch is permissible only if a
trailer load is specified in your vehicle docu‐
ments. If this is not the case, the vehicle is not
approved for trailer operation.
Further information can be obtained at a quali‐
fied specialist workshop.
If the trailer coupling is detachable, it is essen‐
tial to comply with the operating instructions of
the trailer coupling manufacturer.
Couple and uncouple the trailer carefully. If you
do not connect the trailer to the towing vehicle
correctly, the trailer may become detached.
Observe the following notes on the tongue
weight:
Do not use a tongue weight that exceeds or
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falls below the permissible tongue weight
Use a tongue weight as close as possible to
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the maximum tongue weight
Do not exceed the following values:
Permissible towing capacity
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Permissible rear axle load of the towing vehi‐
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cle
Permissible gross mass of the towing vehicle
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Permissible gross mass of the trailer
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Maximum permissible speed of the trailer
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Ensure the following before starting a journey:
The tire pressure on the rear axle of the tow‐
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ing vehicle is set for a maximum load
The lighting of the connected trailer is opera‐
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tional
In the event of increased rear axle load, the vehi‐
cle/trailer combination may not exceed a maxi‐
mum speed of 62 mph (100 km/h) for reasons