Mercedes-Benz ML320 Cdi Operator's Manual page 344

Electrical connections
The vehicle is prewired to accept the
seven-wire harness included in the
Mercedes-Benz approved trailer hitch
receiver kit.
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A four-pole conversion plug is available from
your authorized Mercedes-Benz Light Truck
Center as a spare part.
For further information, see an authorized
Mercedes-Benz Light Truck Center.
Vehicle and trailer weights and ratings
Gross Vehicle Weight Rating (GVWR) is the
maximum permissible vehicle weight:
ML 350, ML 500, ML 320 CDI:
6239 lbs (2830 kg)
ML 63 AMG:
6393 lbs (2900 kg)
Gross Vehicle Weight (GVW):
Comprises weight of vehicle including fuel,
tools, spare wheel, installed accessories,
passengers, cargo and trailer tongue. It
must never exceed the GVWR.
Gross Axle Weight Rating (GAWR) is the
maximum permissible axle weight:
ML 350, ML 500
ML 320
CDI
Front 2943 lbs 2987 lbs
(1335 kg) (1355 kg)
Rear 3296 lbs 3252 lbs
(1495 kg) (1475 kg)
The Gross Trailer Weight (GTW) is the
weight of the trailer plus the weight of all
cargo, equipment, luggage etc. loaded on
the trailer. The maximum permissible
gross trailer weight to be towed:
4982 lbs (2260 kg)
Trailer Tongue Weight Rating (TWR) is the
maximum permissible weight on the trailer
tongue:
496 lbs (225 kg) limit for Mercedes-Benz
approved hitch receiver.
Loading a trailer
When loading a trailer, you should ob-
serve that neither the permissible GTW,
ML 63
nor the GVWR are exceeded.
AMG
Maximum permissible values are listed
on the safety compliance certification
3175 lbs
labels for the vehicle and for the trailer
(1440 kg)
to be towed.
3527 lbs
The lowest value listed must be select-
(1600 kg)
ed when determining how the vehicle
and trailer are loaded.
The tongue weight at the hitch ball
must be added to the GVW to prevent
exceeding your Mercedes-Benz tow
vehicle's rear GAWR.
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We recommend loading the trailer in such a
manner that it has a Tongue Weight (TW)
between 10% and 15% of the Gross Trailer
Weight (GTW).
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Maximum trailer ratings are calculated as-
suming a base vehicle, plus any options neces-
sary to achieve the rating, plus driver. The weight
of other equipment, passengers and cargo will
reduce the maximum trailer weight your vehicle
can tow.
Operation
Driving instructions
343