Mercedes-Benz V-Class 2021 Owner's Manual page 185

182 Driving and parking
which higher speeds are permitted for vehicle/
trailer combinations.
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During trailer operation, remember that
PARKTRONIC is available only to a limited
extent, if at all.
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The height of the ball head will change
depending on the vehicle's load. In this case,
use a trailer with a height-adjustable draw‐
bar.
Vehicles with a detachable trailer coupling
* NOTE Increased risk of damage to prop‐
erty due to attached ball neck
When the trailer is not coupled or the
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bicycle rack is attached, fold in the ball
neck.
Reduce the risk of damage to the trailer coupling
and contribute to environmental protection. If you
do not need the ball neck, remove it from the ball
neck mount and fit its cover in the rear bumper
( page 182). Only with the cover fitted can the
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emission values indicated for real operation be
achieved.
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During trailer operation, the permissible
gross vehicle weight is increased by 100 kg
for vehicles registered as passenger vehicles.
The maximum permissible rear axle load
must be observed.
Fitting the cover for trailer coupling
Insert the cover flush into the recess on the
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rear bumper and press it upwards against the
bumper covering at the latching points on the
outside right and left.
Turn fasteners from position 1 to position
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2.
Ensure that the fasteners are fully engaged
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and firmly in position 2.
Attaching the ball neck
& WARNING Danger of accident‑ and injury
due to incorrectly installed and secured
ball coupling
If the ball coupling has not engaged, it can
become detached during driving and endan‐
ger other road users.
Engage the ball coupling as described
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and ensure that it is securely installed.
& WARNING Danger of accident due to
non-engaged ball coupling
If the ball coupling has not engaged, the
trailer can become detached.
Always engage the ball coupling as
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described and ensure that it is securely
installed.
Requirements:
The trailer hitch key is available.
R
Note the number of the key that belongs to
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the ball neck of the trailer hitch.
With this number, you will receive a replace‐
ment key at a Mercedes-Benz service centre.
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Depending on the vehicle equipment, the
holder for the ball neck on the vehicle can be
protected with a cover in the bumper.
Release the two quick-release fasteners for
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the cover in the bumper and remove the
cover ( page 182).
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Take the ball neck of the trailer hitch out of
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the stowage space on the right-hand side in
the rear and stow the cover away.