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:
Lift gate
WARNING
► Always be sure the lift gate has been
closed securely to prevent it from opening
while driving.
► Do not drive with the lift gate open. This
could allow dangerous exha ...
USB memory operation
Audio main operation
Open the tray lid and connect a USB
memory 1 as illustrated. Then, push the
DISC·AUX button repeatedly to switch to
the USB memory mode.
If the system has been turned ...
Calling for Service
When calling Roadside Service, have the following information ready:
Your name, home address, and home telephone number.
Telephone number of your location.
Location of the vehicle.
Model, ye ...
