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:
Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits.
If one circuit is not working, the remaining circuit can still work to stop the
vehicle. For normal braking performance, both circuits n ...
How to Check Lubricant
To get an accurate reading, the vehicle should be on a level surface.
For Two-Wheel-Drive vehicles, the proper level is from 15mm to 40mm (0.6
in to 1.6 in) below the bottom of the filler plug ...
How to use INFO button
The display screen shows vehicle and
navigation information for your convenience.
The information shown on the screen
should be a guide to determine the
condition of the vehicle. See the follo ...
