Porsche Cayenne 2005 Owner's Manual page 194

Towing a trailer
Warning!
Driving with a trailer
f Always observe the permissible towing capac-
ity, vertical coupling load and rear-axle load.
Please observe the chapter "WEIGHTS" on
Page 352.
f When connected, the trailer must always be
horizontal behind the towing vehicle. If neces-
sary, use a trailer with an adjustable drawbar.
f When the vehicle is driven in the mountains, the
engine output decreases as altitude increases.
The maximum weights stated are the values at
sea level. The total weight of the car-trailer
combination must therefore be reduced by
10% for each increment of 3,280 ft. or
1,000 metres altitude. A fractional increment
counts as the full 1,000 metres. Please take
this into consideration when planning your
route.
194
Controls, Safety, Instruments
Distributing the load
f Distribute the load in the trailer so that heavy
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objects are as close to the axle as possible.
Always safeguard all objects against slipping
and tie them down securely.
f You should make the best possible use of the
trailer coupling's rated vertical coupling load
when loading the trailer, but never exceed it.
Tire pressure
f Select the vehicle tire pressure for full load
when towing a trailer.
f Please observe the chapter "Tire pressure ta-
bles".
f Check the tire pressure of the trailer's wheels
according to the manufacturer's instructions.
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Door mirrors
f If the width of the trailer obstructs your view of
the traffic behind the trailer, you must have ad-
ditional door mirrors fitted.
Headlights, lights
f Check whether the plug of the trailer is
plugged into the towing vehicle and whether all
lights function.