Mercedes-Benz 2008 GL 450 Automobile User Manual


 
369
Operation
Driving instructions
Uncoupling the trailer ̈ Make sure the automatic transmission
is set to P (
page 191).
̈ Set the parking brake for the vehicle
(
page 67).
̈ Start the engine (page 56).
̈ Close all doors and the tailgate.
̈ Set the parking brake for the trailer.
̈ Disconnect all electrical plug connec-
tors.
̈ Uncouple the trailer.
̈ Make sure that the trailer coupling is
free of load.
̈ Turn off the engine ( page 68).
Warning! G
While you are coupling or decoupling a trail-
er, make sure that you do not
ț lock or unlock
ț open or close
a vehicle door or the tailgate.
The vehicle’s level could change and you
could endanger yourself and/or others as a
result.
Make sure that you do not operate the ADS
button* (
page 279) or the vehicle level
control system (
page 279) when cou-
pling/decoupling the trailer.
Warning! G
As soon as you disconnect the electrical
connection between the trailer and the
vehicle, the vehicle will lower. To help avoid
personal injury, make sure no one is near
the wheel housing or underneath the vehicle
before the electrical connection is discon-
nected.
When you uncouple the trailer, the vehicle is
temporarily raised because the springs are
relieved of load. Be especially careful during
this process, as you could otherwise injure
yourself and/or others. Make sure that any
persons remaining in the vehicle do not
press the switches for vehicle level control
or the ADS*.
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