2008 MERCEDES-BENZ GL320 spare wheel

Contents
Oxidation catalyst
(diesel engine).............................. 371
Emission control .......................... 372
Coolant temperature .................... 372
At the gas station .............................. 374
Refueling ...................................... 374
Check regularly and
before a long trip.......................... 376
Engine compartment ......................... 378
Hood ............................................ 378
Engine oil ..................................... 380
Transmission fluid level ................ 381
Coolant level ................................ 381
Windshield/rear window
washer system and
headlamp cleaning system* ........ 383
Tires and wheels ................................ 384
Important guidelines .................... 384
Tire care and maintenance........... 385
Direction of rotation ..................... 387
Loading the vehicle ...................... 387
Recommended tire
inflation pressure ......................... 393
Checking tire inflation pressure ... 395
Tire labeling.................................. 406
Load identification ....................... 410DOT, Tire Identification
Number (TIN) ................................ 410
Maximum tire load ........................ 412
Maximum tire inflation pressure ... 412
Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 413
Tire ply material ............................ 415
Tire and loading terminology......... 415
Rotating tires ................................ 418
Winter driving ..................................... 420
Winter tires ................................... 420
Snow chains.................................. 421
Maintenance....................................... 422
Maintenance service indicator
message ....................................... 422
Calling up the maintenance
service indicator display ............... 424
Resetting the maintenance
service indicator ........................... 424
Vehicle care........................................ 425
Cleaning and care of the vehicle ... 425
Practical hints.................................. 435
What to do if … ................................... 436
Lamps in instrument cluster ......... 436
Lamp in center console ................ 447
Vehicle status messages in
the multifunction display .............. 449
Where will I find ...? ............................ 490
First aid kit.................................... 490
Vehicle tool kit.............................. 490
Spare wheel .................................. 494
Unlocking/locking in an emergency .. 496
Unlocking the vehicle ................... 496
Locking the vehicle ....................... 497
Fuel filler flap ................................ 497
Resetting activated head restraints.... 499
Vehicles without Rear seat
entertainment system*................. 499
Vehicles with Rear seat
entertainment system*................. 500
Replacing SmartKey batteries ............ 502
Replacing bulbs .................................. 504
Bulbs............................................. 504
Replacing bulbs for front lamps .... 507
Replacing bulbs for rear lamps ..... 511
Adjusting headlamp aim ............... 514
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Contents
Replacing wiper blades ...................... 516
Front wiper blades ....................... 516
Rear wiper blade .......................... 517
Flat tire .............................................. 519
Preparing the vehicle.................... 519
Mounting the spare wheel ............ 520
Bleeding the fuel system
(diesel engine only) ............................ 527
Battery ............................................... 528
Disconnecting, removing,
reinstalling and
reconnecting the battery .............. 530
Charging the battery .................... 535
Jump starting ..................................... 536
Towing the vehicle ............................. 538
Installing towing eye bolt.............. 540
Stranded vehicle .......................... 542
Fuses ................................................. 543
Fuse box in engine compartment . 544
Fuse box in cargo compartment ... 544
Fuse box in
passenger compartment .............. 545
Emergency engine shut-down ...... 545
Technical data................................. 547
Parts service ...................................... 548
Warranty coverage............................. 549
Loss of Service and Warranty
Information Booklet ..................... 549
Identification labels ........................... 550
Layout of poly-V-belt drive ................. 552
GL 320 CDI .................................. 552
GL 450, GL 550............................ 552
Engine................................................ 553
Rims and tires.................................... 555
Same size tires ............................. 556
Minispare wheel ........................... 558
Electrical system ............................... 559
Main Dimensions ............................... 560
Weights.............................................. 561Fuels, coolants, lubricants ................. 562
Capacities .................................... 562
Engine oils ................................... 564
Engine oil additives ...................... 564
Air conditioning refrigerant .......... 564
Brake fluid.................................... 564
Premium unleaded gasoline
(gasoline engine).......................... 565
Fuel requirements ........................ 565
Gasoline additives
(gasoline engine).......................... 566
Coolants ...................................... 567
Windshield washer system and
headlamp cleaning system*......... 569
Index................................................. 571
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23 At a glance
Exterior view
ItemPage
1Tailgate122
Power tailgate*123
Cargo compartment

Loading instructions301

Cargo tie-down rings302

Hooks304

Expanding304

Cover blind310

Cargo net*312
Vehicle tool kit490
Spare wheel494
2Rear window defroster212
3Rear lamps505
4Fuel filler flap374
Refueling374
Fuel375,
565
ItemPage
5Exterior rear view mirrors
Adjusting51
Auto-dimming rear view
mirrors*208
Power folding*209
6Towing eye bolt
Installing towing eye bolt540
7Tires and wheels384,
555
Checking tire inflation
pressure395
General information384
Flat tire519
Spare wheel494
8Hood378
Opening378
Engine oil380
Coolant381
ItemPage
9Windshield wipers62
Wiper blades, replacing516
Wiper blades, cleaning431
aWindshield
Cleaning with wiper fluid64
Cleaning431
bRoof rails295
Carriers*296
cPower tilt/sliding sunroof*251
dDoors
Locking and unlocking112
Opening120
Unlocking/locking in an
emergency496
eFront lamps505
fHeadlamp cleaning system*208
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37 At a glance
Storage compartments
ItemPage
1Parcel net in front passen-
ger footwell319
2Glove box/CD changer315
3Door pocket
4Parcel net on front passen-
ger seat backrest319
5Door pocket
6Cup holder321
7Vehicle tool kit, spare wheel490
8First aid kit490
9Cup holder321
aDoor pocket
bParcel net on driver’s seat
backrest319
ItemPage
cDoor pocket
dHolder for gas cards211
eDepending on vehicle con-
figuration:
Storage compartment
Ashtray
317
321
fCup holders320
gStorage/telephone* com-
partment with coin holder317
hRear storage compartment318
jCup holder in rear armrest320
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105 Safety and Security
Driving safety systems
Switching off the ESP®
To improve the vehicle’s traction, switch
off the ESP® in driving situations where it
would be advantageous to have the drive
wheels spin and thus cut into surfaces for
better grip such as:

when driving with snow chains

in deep snow

in sand or gravelWhen you switch off the ESP
®

the ESP® does not stabilize the vehicle

the engine output is not limited, which
allows the drive wheels to spin and
thus cut into surfaces for better grip

the 4-ETS will still apply the brake to a
spinning wheel

the ESP® continues to operate when
you are braking

you cannot activate the cruise control
or the Distronic* system

the cruise control or the Distronic*
system switch off if currently activatedThe ESP
® switch is located on the upper
part of the center console.
1ESP
® switch
With the engine running, press ESP®
switch1.
The ESP
®warning lampv in the
instrument cluster comes on.
The ESP
® is deactivated.
Warning!G
The ESP® should not be switched off during
normal driving other than in the circum-
stances described below. Disabling of the
system will reduce vehicle stability in stan-
dard driving maneuvers.
Do not switch off the ESP
® when a spare
wheel is mounted.
Warning!G
Switch on the ESP® immediately if the afore-
mentioned circumstances do not apply any-
more. Otherwise the ESP
® will not stabilize
the vehicle when it is starting to skid or a
wheel is spinning.
iWhen the ESP® is switched off and one or
more drive wheels are spinning, the ESP®
warning lampv in the instrument cluster
flashes. However, the ESP
® will then not
stabilize the vehicle.
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302 Controls in detail
Loading
The gross vehicle weight which is the
weight of the vehicle including fuel, tools,
spare wheel, installed accessories, pas-
sengers and luggage/cargo must never
exceed the load limit and Gross Vehicle
Weight Rating (GVWR) for your vehicle as
specified on the placard located on the
driver’s door B-pillar (
page 550). In addi-
tion, the load must be distributed in such a
way so that the weight on each axle never
exceeds the Gross Axle Weight Rating
(GAWR) for the front and rear axle. The
GVWR and GAWR for your vehicle are indi-
cated on the certification label which can
be found on the driver’s door B-pillar
(
page 550).
For more information, see “Tire and Load-
ing Information” (
page 388).
The handling characteristics of a fully load-
ed vehicle depend greatly on the load dis-
tribution. It is therefore recommended to
load the vehicle according to the illustra-
tions shown, with the heaviest items being
placed towards the front of the vehicle.Please pay attention to and comply with
the following instructions when loading the
vehicle and transporting cargo:

Always place items being carried
against front or rear seat backrests,
and fasten them as securely as possi-
ble.

The heaviest portion of the cargo
should always be kept as low as possi-
ble against front or rear seat backrests.
For additional safety when transporting
cargo while the rear seats are unoccupied,
fasten the outer seat belts crosswise into
the opposite side buckles.
Cargo tie-down rings
Your vehicle is equipped with eight cargo
tie-down rings.
Carefully secure cargo by applying even
load on all rings with rope of sufficient
strength to hold down the cargo.
iThe cargo compartment is the preferred
place to carry objects. The expanded cargo com-
partment (
page 304) should only be used for
items which do not fit in the cargo compartment
alone.
iWhile the cargo net* (page 312) will help
protect you from smaller objects, it cannot pre-
vent the movement of large, heavier objects into
the passenger compartment in an accident, dur-
ing hard braking or sudden maneuvers. Such
items must be properly secured using the cargo
tie-down rings in the cargo compartment floor.
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365 Operation
Driving instructions
Electrical connections
The vehicle is prewired to accept the
seven-wire harness included in the
Mercedes-Benz approved trailer hitch
receiver kit.
For further information, contact an autho-
rized Mercedes-Benz Light Truck Center.
Vehicle and trailer weights and ratings
Gross Vehicle Weight Rating (GVWR) is the
maximum permissible vehicle weight:
6944 lb (3150 kg).
Gross Vehicle Weight (GVW):
Comprises weight of vehicle including fuel,
tools, spare wheel, installed accessories,
passengers, cargo and trailer tongue. It
must never exceed the GVWR.Gross Axle Weight Rating (GAWR) is the
maximum permissible axle weight:
The Gross Trailer Weight (GTW) is the
weight of the trailer plus the weight of all
cargo, equipment, luggage etc. loaded on
the trailer. The maximum permissible
gross trailer weight to be towed:
7500 lb (3402 kg).
Trailer Tongue Weight Rating (TWR) is the
maximum permissible weight on the trailer
tongue:
600 lb (272 kg) limit for Mercedes-Benz
approved hitch receiver.Loading a trailer

When loading a trailer, you should ob-
serve that neither the permissible GTW,
nor the GVWR are exceeded.
Maximum permissible values are listed
on the safety compliance certification
labels for the vehicle and for the trailer
to be towed.
The lowest value listed must be select-
ed when determining how the vehicle
and trailer are loaded.

The tongue weight at the hitch ball
must be added to the GVW to prevent
exceeding your Mercedes-Benz tow
vehicle’s rear GAWR.
iA four-pole conversion plug is available from
your authorized Mercedes-Benz Light Truck
Center as a spare part.
GL 320 CDI
Front3306 lb (1500 kg)
Rear3968 lb (1800 kg)
GL 450, GL 550
Front3240 lb (1470 kg)
Rear3968 lb (1800 kg)
iWe recommend loading the trailer in such a
manner that it has a Tongue Weight (TW)
between 8% and 15% of the Gross Trailer Weight
(GTW).
iMaximum trailer weight ratings are calculat-
ed assuming the vehicle, plus driver. The weight
of other accessories, passengers and cargo will
reduce the maximum trailer weight and Tongue
Weight (TW) your vehicle can tow.
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385 Operation
Tires and wheels
Tire care and maintenance
Regularly check your tire inflation pressure
at least once a month. For more informa-
tion on checking tire inflation pressure,
see “Recommended tire inflation pres-
sure” (
page 393).Tire inspection
Every time you check your tire inflation
pressure, you should also inspect your
tires for the following:

excessive treadwear (page 386)

cord or fabric showing through the
tire’s rubber

bumps, bulges, cuts, cracks or splits in
the tread or side of the tire
Replace the tire if you find any of the above
conditions.
Make sure you also inspect the spare tire
periodically for condition and inflation.
Spare tires will age and become worn over
time even if never used, and thus should be
inspected and replaced when necessary.Life of tire
The service life of a tire is dependent upon
varying factors including but not limited to:

Driving style

Tire inflation pressure

Distance driven
Warning!G
Regularly check the tires for damage. Dam-
aged tires can cause tire inflation pressure
loss. As a result, you could lose control of
your vehicle.
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
Warning!G
Tires and spare tire should be replaced after
6 years, regardless of the remaining tread.
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