Page 319 of 416

319 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
§
TC SHIFT
CANCELLED
The shift process in the transfer case was
canceled because of a malfunction.
Repeat the shift process (
page 154).
TC SHIFT CONDITIONS
NOT FULFILLED
You have not met the shift conditions for
a selection process in the transfer case.
Repeat the shift process (
page 154).
TRANSFER CASE
VISIT WORKSHOP!
The transfer case is malfunctioning.
Do not switch the transfer case on.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
K
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the tilt/sliding sunroof open.
Close the tilt/sliding sunroof
(page 173).
J
CLOSE
SUNROOF!
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the tilt/sliding sunroof open.
Close the tilt/sliding sunroof
(page 173).
L
TELE AID
DRIVE TO WORKSHOP!
One or more main functions of the Tele
Aid system are malfunctioning.
Have the Tele Aid system checked by
an authorized Mercedes-Benz Light
Truck Center.
ì
FUNCTION
NOT AVAILABLE!
This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Page 323 of 416
323 Practical hints
Where will I find...?
Spare wheel
The spare wheel is located under a cover
on the outside of the vehicle’s tailgate.
For information on rim and tire specifica-
tions, see (
page 369) and (
page 371).
Removing cover
1Cover ring
2Key
3Tab
Open lock for cover ring1 with
key2 for the spare wheel cover.
Fold tab3 downwards.
4Cover plate
Pull cover ring1 slightly outwards in
direction of arrows and remove.
Pull cover plate4 upward towards
you.5Catch
6Recess
iWhen replacing cover plate4, make
sure catch5 engages in recess6.
Make sure the lock faces downwards
when mounting cover ring1.
For safety reasons, check regularly that
the spare wheel is securely fastened.
Page 325 of 416

325 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you are unable to unlock the vehicle with
the SmartKey, open the driver’s door and
the tailgate using the mechanical key.
The passenger door cannot be unlocked
manually.
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row and slide the mechanical key2
out of the housing.
Unlocking the driver’s door
Unlock the door with the mechanical
key. To do so, push the mechanical key
in the lock until it stops and turn it to
the left.Unlocking the tailgate
If you are unable to unlock the tailgate with
the SmartKey, open the tailgate with the
mechanical key as follows:
1Unlocking in an emergency
2Lock cylinder
3Handle
Insert the mechanical key into lock
cylinder2.
Turn the mechanical key counterclock-
wise to position1 and release it.
Remove the mechanical key.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Page 326 of 416

326 Practical hintsUnlocking/locking in an emergency
Press lock cylinder2 and pull on tail-
gate handle3.
Open the tailgate to the side.
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey, lock it with the mechanical
key as follows:
Close the passenger doors and the tail-
gate.
Press the central locking switch in the
cockpit (
page 99).
Check to see whether the locking
knobs on the passenger doors are still
visible. If necessary, push them down
manually.
Slide the mechanical key2 out of the
SmartKey.
Lock the driver’s door with the me-
chanical key.
Check if the tailgate is locked. If neces-
sary lock the tailgate with the mechan-
ical key.
Fuel filler flap
The emergency release is in the cargo
compartment behind the rear panel trim.
1Edge protection
2Rear panel trim
Open the tailgate.
Remove edge protection1 from the
door pillar.
Remove rear panel trim2.
Warning!
G
The tailgate swings open to one side. Always
make sure there is sufficient clearance for
tailgate.iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Page 328 of 416
328 Practical hintsOpening/closing in an emergencyTilt/sliding sunroof
You can open or close the tilt/sliding sun-
roof manually in the case of power failure.
The tilt/sliding sunroof drive is located on
the left side (driver’s side) of the cargo
compartment behind the rear panel trim.
1Edge protection
2Rear panel trim
Take the vehicle tool kit out from its
storage compartment (
page 321).
Open the tailgate.
Remove edge protection1 from door
pillar.
Remove rear panel trim2.
3Key (vehicle tool kit)
4Screwdriver (vehicle tool kit)
Fit key3 into hexagon nut of drive.
Insert screwdriver4 into the key as a
lever.
Turn screwdriver4 clockwise to:
slide sunroof closed
raise sunroof at the rear
Turn screwdriver4 counterclockwise
to:
slide sunroof open
lower sunroof at the rear
iDo not disconnect electrical connec-
tors.
Page 331 of 416
331 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen replacing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Light
Truck Center.
Page 332 of 416
332 Practical hintsReplacing SmartKey batteriesSmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 325).
1Mechanical key
2Battery compartment
Insert mechanical key1 in side open-
ing and push gray slide.
Battery compartment2 is unlatched.
Pull battery compartment out of the
housing in direction of arrow.
Remove the discharged batteries.
3Battery
4Contact spring
Using a lint-free cloth, insert new
batteries3 under contact spring4
with the plus (+) side facing up.
Return battery compartment2 into
the housing until it engages.
Slide mechanical key1 back into the
SmartKey.
Check the operation of the SmartKey.
Page 344 of 416
344 Practical hintsReplacing wiper blades
Removing wiper blades
Fold the wiper arm forward.
1Safety tab
2Wiper blade
3Wiper arm
4Attachment link
Warning!
G
For safety reasons, switch off wipers and re-
move SmartKey from starter switch before
replacing a wiper blade. Otherwise, the mo-
tor could suddenly turn on and cause injury.
!Never open the hood when the wiper
arm is folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make certain that the wiper blades are
properly installed. Improperly installed
wiper blades may cause windshield
damage.
The wiper with air spoiler should be
mounted on the driver’s side
For your convenience, you should have
this work carried out by an authorized
Mercedes-Benz Light Truck Center.