MERCEDES-BENZ GL450 2007 X164 Owner's Manual

490 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
nLevel selection
not permittedYou are driving too fast for the desired
vehicle level.Reduce vehicle speed.
Set the desired vehicle level again
(
page 281).
You are towing a trailer or using acces-
sories that are connected to the trailer
power socket, e.g. a bicycle rack.
Leveling cancelledYou have selected another vehicle
level*.
pReduce speed to
under 20 mphYou are driving too fast for the set vehi-
cle level.Do not drive faster than 20 mph
(30 km/h).
Visit workshopThe air suspension functional only to a
limited extent.Do not drive faster than 50 mph
(80 km/h) depending on the set
vehicle level.
Have the vehicle checked at an au-
thorized Mercedes-Benz Light
Truck Center.
Door open
Veh. lowering canceledYou have opened a door or the tailgate
while the vehicle is being lowered.

491 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
Visit workshopThe air suspension is malfunctioning.Do not drive faster than 50 mph
(80 km/h) depending on the set vehi-
cle level.
Have the vehicle checked at an autho-
rized Mercedes-Benz Light Truck
Center.
Compressor
cooling downYou have selected a higher vehicle level.
Due to frequent level changes within a
short period, the compressor must first
cool down.Let the compressor cool until the
message disappears.
The selected level will be set once the
compressor has cooled.
!When the message Compressor cooling
down
appears in the multifunction display,
driving is still possible. Keep in mind that the ride
height of the vehicle is not yet reached, so you
can damage the underbody of the vehicle. The
selected level will be set once the compressor
has cooled.

492 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
nVehicle rising
Max. 20 mphThe vehicle is adjusting to off-road
level 3.Do not drive faster than 20 mph
(30 km/h).
Max. 20 mphYou are driving while using off-road
level 3*. The message reminds you of the
maximum speed at which you may drive
with off-road level 3.Do not drive faster than 20 mph
(30 km/h).
pReduce speed to
under 20 mphYou are driving too fast for the set vehicle
level.Do not drive faster than 20 mph
(30 km/h).
being lowered
Max. 20 mphThe vehicle is being lowered from off-road
level 3 to off-road level 2.Do not drive faster than 20 mph
(30 km/h) until the off-road level 2 is
reached.
Warning!G
Adapt your driving style to the modified driv-
ing conditions. Avoid extreme, quick steer-
ing movements. Please keep in mind that
the driving characteristics of the vehicle
have been modified. You should thereforedrive in off-road level 3 with particular cau-
tion as it could otherwise lead to an accident
and/or serious injury to you or others.

493 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
kDiff. lock system malfunct.
Visit workshopThe differential locks* are
malfunctioning.Do not drive faster than 50 mph
(80 km/h).
Have the vehicle checked at an autho-
rized Mercedes-Benz Light Truck
Center.
Diff. Lock System
overheated. Wait briefly.The differential locks* are too hot
and have been deactivated as a re-
sult.Continue driving with added caution.
The lock function is unavailable.
Wait for the lock system to cool down.
The differential locks will be reactivat-
ed as soon as they have cooled off.
mStop vehicle
Engage parking brakeA shifting procedure could not be
completed. LOW RANGE* is in neu-
tral position. There is no connection
between the engine and the drive
wheels.Do not attempt to continue driving.
You could otherwise damage the
vehicle’s drivetrain.
Let the vehicle coast to a halt.
 Engage the parking brake.
Perform the shifting procedure again
(
page 204).

494 Practical hints
What to do if …
Display symbolDisplay messagesPossible cause/consequencePossible solution
mStop vehicle
Engage parking brakeThe LOW RANGE system* could only
partially carry out the shifting proce-
dure or it could not carry out the
shifting procedure at all. The system
is in idle mode. No power is being
transmitted to the drive wheels.Do not continue driving.
Carefully let the vehicle coast to a
stop.
Firmly depress the parking brake.
Shift gears again in HIGH RANGE or
LOW RANGE (
page 204).
Visit workshop
If parked engage pk. brakeThe LOW RANGE system* is
malfunctioning.Do not drive faster than 50 mph
(80 km/h).
Engage the parking brake if parked.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as possi-
ble.
max. speed 25 mphSpeed too high for shifting proce-
dure.Continue driving more slowly.
max. speed 40 mphSpeed too high for shifting proce-
dure.Continue driving more slowly.
shift briefly
into NYou have reduced engine speed. You
may now carry out a shifting proce-
dure.Briefly shift automatic transmission
to positionN.
Shifting procress canceled
ReactivateThe shifting procedure was not car-
ried out.Repeat the shifting procedure if
desired.

495 Practical hints
Where will I find ...?
Where will I find ...?
First aid kit
The first aid kit is located on the driver’s
side in the cargo compartment behind the
cover.
1Lock
2Cover in left side trim panel
Turn lock1 90° in direction of arrow.
Fold down cover2.
The first aid kit can be removed.
Vehicle tool kit
The vehicle tool kit is stored under the
cargo compartment floor.
The vehicle tool kit includes:

Towing eye bolt

Wheel wrench

Alignment bolt

Vehicle jack

Fuse chart

Spare fuses

Fuse extractor

Collapsible wheel chock

Wheel bolts for spare wheel1Cargo compartment floor, lowered
2Handle cover
Open the tailgate (page 124).
Push in handle cover2 as indicated
by arrow and pull handle.
Lift cargo compartment floor1.
iCheck expiration dates and contents for
completeness at least once a year and replace
missing/expired items.


496 Practical hints
Where will I find ...?
3Securing hook
Release securing hook3 (located be-
low the floor handle) from holder.3Securing hook
4Cargo compartment floor, raised
5Upper cargo compartment lip
Engage securing hook3 on upper
cargo compartment lip5.
You can now access the vehicle tool kit. To
remove the vehicle tool kit storage well
casing, proceed as described on
(
page 499).6Alignment bolt
7Towing eye bolt
8Wheel wrench
9Velcro strap
aVehicle jack
bWheel bolts for 18" light alloy rims or
Minispare wheel
cCollapsible wheel chock
dSpare fuses, fuse chart, fuse extractor
eVehicle tool kit storage well casing
To remove vehicle jacka, loosen vel-
cro strap9.
!With the cargo compartment cover blind
installed behind the third-row seats
(
page 312), disengage cargo compartment
cover blind and flip it forward. Otherwise the
strap of the securing hook could damage the
cargo compartment cover blind.


497 Practical hints
Where will I find ...?
Vehicle jackThe vehicle jack is located underneath the
cargo compartment floor.
Storage position
Remove vehicle jack from its storage
compartment (
page 496).
Turn crank handle in the direction of ar-
row as far as it will go.
!Vehicles with factory-mounted
running-boards*:
Your vehicle is equipped with a scissors-type
jack (located under the cargo compartment
floor) designed for use with factory-mounted
running boards. Only use this jack when jacking
up vehicles with factory-mounted running boards
as otherwise the vehicle’s underbody can be
damaged. See separate instructions for scis-
sors-type jack.
!To prevent damage, always disengage the
strap of the securing hook and lower the cargo
compartment floor (
page 495) before closing
the tailgate.
Warning!G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage the parking brake while
the vehicle is raised. Be certain that the jack
is always vertical (plumb line) when in use,
especially on hills. Always try to use the jack
on a level surface.
Make sure that the jack arm is fully seated
in the jack take-up bracket. Always lower
the vehicle onto jackstands of sufficient
capacity before working under the vehicle.


498 Practical hints
Where will I find ...?
Operational position
Turn crank handle clockwise.
Before storing the vehicle jack in its stor-
age compartment:

The vehicle jack should be fully col-
lapsed.

The handle must be folded in (storage
position).Setting up the collapsible wheel chock
The collapsible wheel chock serves to ad-
ditionally secure the vehicle, e.g. while
changing the wheel.
1Tilt the plate upward
2Fold the lower plate outward
3Insert the plate
Tilt both plates upward1.
Fold the lower plate outward2.
Guide the tabs of the lower plate all the
way into the openings of base plate3.
For information on where to place wheel
chocks when changing a wheel, see “Lift-
ing the vehicle” (
page 524).


499 Practical hints
Where will I find ...?
Spare wheelThe Minispare wheel is located underneath
the cargo compartment floor
(
page 495).
Removing Minispare wheel
Remove the jack from the vehicle tool
kit (
page 496).
1Minispare wheel
2Retaining screw
3Vehicle tool kit storage well casing
Loosen retaining screw2 by turning it
counterclockwise.
Remove vehicle tool kit storage well
casing3.
You can now access the Minispare wheel.
Remove Minispare wheel1.
Warning!G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted. Adapt your driving style accord-
ingly.
The Minispare wheel is for temporary use
only. When driving with a Minispare wheel
mounted, ensure proper tire inflation
pressure and do not exceed a vehicle speed
of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Light
Truck Center as soon as possible to have the
Minispare wheel replaced with a regular
road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
Do not switch off the ESP
® when a
Minispare wheel is mounted.
iFor information on how to mount the
Minispare wheel, see “Mounting the spare
wheel” (
page 524).
iIf retaining screw2 does not come loose,
turn vehicle tool kit storage well casing3
slightly counterclockwise. Retaining screw2
should then come loose easily.