Mercedes-Benz M-Class 2006 Owners Manual - Manual (Page 319)

318
Operation
Driving instructions
ț If the transmission hunts between
gears on inclines, manually shift to a
lower gear (select 4, 3, 2 or 1).
A lower gear and reduction of speed re-
duces the chance of engine overload-
ing and/or overheating.
ț On very steep inclines, not manageable
with automatic transmission in 1,
switch on off-road driving program
(
୴ page 248).
ț When going down a long hill, shift into
a lower gear and use the engine’s brak-
ing effect.
Avoid riding the brakes, thus overheat-
ing the vehicle and trailer brakes.
ț If the engine coolant rises to an ex-
tremely high temperature (coolant tem-
perature needle approaching the red
zone) when the air conditioning is on,
turn off the air conditioning system.
Engine coolant heat can be additionally
vented by opening the windows,
switching the climate control fan speed
to high and setting the temperature
control to the maximum hot position.
ț Extreme care must be exercised since
your vehicle with a trailer will require
additional passing distance ahead than
when driving without a trailer.
Because your vehicle and trailer is
longer than your vehicle alone, you will
also need to go much farther ahead of
the passed vehicle before you can re-
turn to your lane.
Uncoupling the trailer
̈ Start the engine ( ୴ page 34).
̈ Make sure the automatic transmission
is set to P.
̈ Set the parking brake for the vehicle
(
୴ page 52) and for the trailer.
̈ Close all doors and the tailgate.
Detach the trailer immediately after-
ward as follows:
̈ Disconnect all electrical plug connec-
tors.
̈ Uncouple the trailer.
!
If the trailer should begin to sway, re-
duce the vehicle’s speed immediately.
In no case attempt to straighten out the
tow vehicle and trailer by increasing
the speed.