2008 MERCEDES-BENZ GL320 lock

474 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
c You are driving with one or more
doors open.Stop the vehicle in a safe location or as
soon as it is safe to do so.
Close the door(s).
] Clean
Fuel FilterContact an authorized Mercedes-Benz
Light Truck Center.
AGas Cap OpenA loss of pressure has been
detected in the fuel system. The
fuel cap may not be closed
properly or the fuel system may
be leaky.Check the fuel cap (page 374).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an
authorized Mercedes-Benz Light Truck
Center.
aYou are driving with the hood or
the tailgate open.Carefully bring the vehicle to a halt as
soon as it is safe to do so in a safe
location.
Close the hood (page 379) or the
tailgate (
page 123).
You are trying to lock the vehicle
with the KEYLESS-GO* function
with a door or the tailgate open.Close all doors and/or the tailgate
(
page 123).
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475 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
FKey
Not DetectedThe SmartKey with
KEYLESS-GO* is not detected
while the engine is running
because

the SmartKey with
KEYLESS-GO* is not in the
vehicle

there is strong
radio-frequency interference
Stop the vehicle in a safe location or as
soon as it is safe to do so.
Apply the parking brake (page 67).
Search for the SmartKey with
KEYLESS-GO*.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started
again after the engine is stopped.
The SmartKey with
KEYLESS-GO* is momentarily
not detected.Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
Operate the vehicle with the SmartKey in
the starter switch if necessary.
Key
Not DetectedThe SmartKey with
KEYLESS-GO* is not detected
while the ignition is switched on
(
page 41) and a door is
opened or closed and the
SmartKey with KEYLESS-GO* is
not in the vehicle.
Search for the SmartKey with
KEYLESS-GO*.
Otherwise the vehicle cannot be locked
nor can the engine be started.
Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
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476 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
FKey Detected
In VehicleA SmartKey with KEYLESS-GO*
left in the vehicle was detected
while trying to lock the vehicle
from the outside.Take the SmartKey with KEYLESS-GO*
out of the vehicle.
Remove KeyYou have forgotten to remove
the SmartKey.Remove the SmartKey from the starter
switch.
You need a new key.There is no additional code avail-
able for SmartKey or SmartKey
with KEYLESS-GO*.Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Key
Does Not Belong to VehicleThe SmartKey or SmartKey with
KEYLESS-GO* in the starter
switch does not belong to the
vehicle.Find the SmartKey or SmartKey with
KEYLESS-GO* that belongs to the vehicle
to operate the vehicle.
Change
Key BatteriesThe batteries in the SmartKey
with KEYLESS-GO* are dis-
charged.Replace the batteries (page 502).
Don’t Forget
Your KeyThis message appears for a
maximum of 60 seconds if the
driver’s door is opened with the
engine shut off and no SmartKey
in the starter switch.
This message is only a reminder.Insert the SmartKey in the starter switch
(
page 42).
or
Take the SmartKey with KEYLESS-GO*
with you when leaving the vehicle.
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488 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
kLocking System Inoperative
Service RequiredThe 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 down.
Stop vehicle,
engage parking brake.A 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.
Stop the vehicle in a safe location or
soon as it is safe to do so.
Engage the parking brake.
Perform the shifting procedure again
(
page 202).
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490 Practical hints
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

Collapsible wheel chock

Wheel bolts for spare wheel1Cargo compartment floor, lowered
2Handle cover
Open the tailgate (page 122).
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.
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493 Practical hints
Where will I find ...?
Screw-type vehicle jack
Storage position
Turn crank handle in the direction of
arrow as far as it will go.
Operational position
Turn crank handle clockwise.Before storing the vehicle jack in its stor-
age compartment:

The vehicle jack should be fully
collapsed.

The handle must be folded in (storage
position).
Scissors-type vehicle jack
Storage position
Take the reversible ratchet out of the
vehicle tool kit.
Operational position
1Scissors-type vehicle jack
2Reversible ratchet
Attach reversible ratchet2 to vehicle
jack in such a way that the wordUP
can be seen.
Before storing the vehicle jack in its stor-
age compartment:

It should be fully collapsed (storage
position).

The ratchet must be removed.
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495 Practical hints
Where will I find ...?
The Minispare wheel is located underneath
the cargo compartment floor
(
page 490).
Removing Minispare wheel
Remove the jack from the vehicle tool
kit (
page 492).
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.
iFor information on how to mount the
Minispare wheel, see “Mounting the spare
wheel” (
page 520).
iIf retaining screw2 does not come loose,
turn vehicle tool kit storage well casing3
slightly counterclockwise. Retaining screw2
should then come loose easily.
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496 Practical hints
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO*, open the
driver’s door using the mechanical key.Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of
arrow.
The mechanical key2 comes out.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the
driver’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position1 and hold it there.
Pull the door handle until the locking
knob moves up (
page 120).
The driver’s door is unlocked.
Pull the door handle once more to open
the driver’s door.
iUnlocking the driver’s door with the
mechanical key will trigger the anti-theft alarm
system.
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key
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