Mercedes-Benz GL-Class: Notes on towing a trailer
Important safety notes
WARNING 
When towing a trailer, incorrect equipment
and driving style could cause you to lose
control of the vehicle.
Towing incorrectly or not observing this
Operator's Manual could lead to damage to
the vehicle and/or serious injuries. Observe
the following guidelines to ensure safe trailer
towing.
Contact a Mercedes-Benz Center if you need
further explanation of the information
contained in this Operator's Manual.
General information
• Only install an approved trailer
coupling on
your vehicle.
Further information on availability and on
installation is available from any authorized
Mercedes-Benz Center.
• The bumpers of your vehicle are not
suitable for installing detachable trailer
couplings.
• Do not install hired trailer couplings or
other detachable trailer couplings on the
bumpers of your vehicle.
• To reduce the risk of damage to the ball
coupling, remove it from the ball coupling
recess when not in use.
Trailer towing
...
Coupling up a trailer
WARNING
While you are coupling or decoupling a trailer,
make sure nobody locks or unlocks the
vehicle and/or opens or closes doors or the
tailgate.
The vehicle's level could change an ...
See also:
Transmission positions
Park position
Do not shift the transmission into
position P() unless the
vehicle is stationary. The parking
lock should not be used as a brake
when parking. In addition to
engaging the parking ...
Collision Parts
Genuine GM Collision parts are new parts made with the same materials and construction
methods as the parts with which the vehicle was originally built. Genuine GM Collision
parts are the best choic ...
Vehicle Dynamic Control (VDC) OFF switch
The vehicle should be driven with the
Vehicle Dynamic Control (VDC) system on
for most driving conditions.
If the vehicle is stuck in mud or snow, the
VDC system reduces the engine output to ...
