2008 MERCEDES-BENZ GL450 flat tire

524 Practical hints
Flat tire
Screw-type jack (example illustration)
Scissors-type jack (example illustration)
Vehicles with screw-type jack: Turn
crank4 clockwise until jack3 is fully
seated in take-up bracket2 and the
jack base evenly meets the ground.
Vehicles with scissors-type jack:
Turn ratchet4 up and down until
jack3 is fully seated in take-up
bracket2 and the jack base evenly
meets the ground.
Continue to turn crank/ratchet4
until the wheel is a maximum of 1.2 in
(3 cm) from the ground.Removing the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and
remove it.
Replace this wheel bolt with alignment
bolt1 supplied with the tool kit
(
page 490).
Remove the remaining wheel bolts.
Remove the wheel.
!Do not place wheel bolts in sand or dirt. This
could result in damage to the bolts and wheel
hub threads.

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525 Practical hints
Flat tire
Mounting the new wheel
1Wheel bolt for 18", 19", 20" and 21"
light alloy wheels
2Wheel bolt for Minispare wheel (locat-
ed in vehicle tool kit (
page 490))
Clean contact surfaces of wheel and
wheel hub.
Guide spare wheel onto the alignment
bolt and push it on the wheel hub.
Insert wheel bolts and tighten them
slightly.
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.
!Wheel bolts2 must be used when mount-
ing the Minispare wheel. The use of any wheel
bolts other than wheel bolts2 for the Minispare
wheel will damage the vehicle’s brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.
Warning!G
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized Mercedes-Benz Light Truck
Center or call Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure to use the correct wheel bolts.
Warning!G
Only use genuine Mercedes-Benz wheel
bolts. Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
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526 Practical hints
Flat tire
Lowering the vehicle
Vehicles with scissors-type jack:
Attach ratchet to vehicle jack in such a
way that the wordDOWN can be seen.
Lower the vehicle until its resting fully
on its own weight.
Vehicles with screw-type jack:
Turn crank counterclockwise.
Vehicles with scissors-type jack:
Turn ratchet in Direction of DOWN.
Remove the jack.
1-5Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).
Store jack and all other vehicle tool kit
items back into the storage well.
Warning!G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
iThe removed road wheel cannot be stored in
the spare wheel well under the cargo compart-
ment floor, but should be transported in the car-
go compartment wrapped in a protective cover.
Vehicles with TPMS or Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.
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555 Technical data
Rims and tires
Rims and tires
!Only use tires which have been tested and
approved by Mercedes-Benz. Tires approved by
Mercedes-Benz are developed to provide best
possible performance in conjunction with the
driving safety systems on your vehicle such as
ABS or ESP
®. Tires specially developed for your
vehicle and tested and approved by
Mercedes-Benz can be identified by finding the
following on the tire’s sidewall:

MO = Mercedes-Benz Original equipment
tires
Using tires other than those approved by
Mercedes-Benz may result in damage that is not
covered by the Mercedes-Benz Limited
Warranty.
!Using tires other than those approved by
Mercedes-Benz can have detrimental effects,
such as

poor handling characteristics

increased noise

increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit dimen-
sional variations and different tire deformation
characteristics that could cause them to come
into contact with the vehicle body or axle parts.
Damage to the tires or the vehicle may be the
result.
iFurther information on tires and rims is
available at any authorized Mercedes-Benz Light
Truck Center. A placard with the recommended
tire inflation pressure is located on the driver’s
door B-pillar (
page 550). Some vehicles may
have supplemental tire inflation pressure infor-
mation for driving at high speeds (
page 394)
or for vehicle loads less than the maximum
loaded vehicle condition (
page 394). If such
information is provided, it can be found on the
placard located on the inside of the fuel filler
flap.The tire inflation pressure should be checked
regularly and should only be adjusted on cold
tires. Follow tire manufacturer’s maintenance
recommendation included with vehicle.
iThe following pages also list the approved
wheel rim and tire sizes for equipping your
vehicles with winter tires. Winter tires are not
available as standard or optional factory equip-
ment, but can be purchased from an authorized
Mercedes-Benz Light Truck Center.
Depending on vehicle model and the standard or
optional factory-equipped wheel rim/tire
configuration on your vehicle (Appearance
Package, etc.), equipping your vehicle with win-
ter tires approved for your vehicle model may
also require the purchase of two or four wheel
rims of the recommended size for use with these
winter tires. See an authorized Mercedes-Benz
Light Truck Center for more information.
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558 Technical data
Rims and tires
Minispare wheel
ModelGL 320 CDI
GL 450
GL 550
Rim4.5B x 19 H2
Wheel offset1.58 in (40 mm)
Minispare tire1
1Must not be used with snow chains.
T 165/90 D19 119M
or
T 165/90 R19 119M
!Please compare the recommended tire
inflation pressure for your vehicle with the tire
inflation pressure on the yellow label located on
the Minispare wheel rim.
If the tire inflation pressure on the yellow label
on the Minispare wheel rim differs from the
values given in this Operator’s Manual, inflate
the tire to the recommended tire inflation pres-
sure given on the yellow label on the Minispare
wheel rim.iPlease note that the tire inflation pressure of
the Minispare tire differs from the tire inflation
pressure of the road tires.
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571 Index
A
ABS 101
Indicator lamp 436
Off-road - ABS 102
ABS, ESP
®
Messages in the multifunction
display 451
Accelerator position, automatic
transmission 195
Accessory weight 415
Accident 66
Active head restraint 90, 133, 499
Adaptive Damping System (ADS)* 278
Air bags 76
Children 77, 91
Front passenger front air bag off
indicator lamp 31, 32, 85
Front, Driver 79
Front, Passenger 79
Occupant Classification System
(OCS) 81
Safety guidelines 78
Side impact (front and rear*) 80
Window curtain 80Air conditioning refrigerant 564
Air conditioning system see
Climate control or
Automatic climate control (3-zone)*
Air conditioning, Cooling 224, 239
Air distribution, Front 219, 234
Air distribution, Rear 227, 243
Air pressure see Tire inflation pressure
Air recirculation mode 222, 237
Air suspension program 278
Adaptive Damping System
(ADS)* 278
Messages in the multifunction
display 486
Vehicle level control 279
Air vents 227
Air vents*, Rear 245
Air vents, Front 220, 234
Air volume 220, 235
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 492, 524
Anticorrosion/antifreeze 563, 568
Antiglare, Interior rear view mirror 208Antiglare, Rear view mirrors* 208
Antilock Brake System see ABS
Anti-theft systems 110
Anti-theft alarm system 109, 110
Immobilizer 109
Aquaplaning see Hydroplaning
Armrest storage/telephone*
compartment
Front 317
Ashtrays (Depending on
vehicle configuration) 321
Aspect ratio 415
ATF 381
Attaching a trailer 366
AUDIO menu 164
Audio menu
CD operation 165
Radio operation 164
Satellite radio* operation 164
Auto-dimming*, Rear view mirrors 208
Automatic central locking,
Control system 180
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574 Index
Children in the vehicle 91
Air bags 77, 91
Blocking rear door window
operation 98
Indicator lamp, Front passenger front
air bag 85
Infant and child restraint systems 86,
92
LATCH-type child seat anchors 95
Occupant Classification System
(OCS) 81
Cigarette lighter
(Depending on vehicle
configuration) 323
Climate control 214
Air conditioning refrigerant 563
Air conditioning, Cooling 224, 225
Air distribution, Front 219
Air distribution, rear 227
Air recirculation mode 222
Air vents*, second-row seats 220
Air vents, Front 220
Air volume 220
Control panel*, Rear 226
Control panel, Front 216
Deactivating system 218Defogging 222
Defrosting 221
Rear window defroster 212
Residual engine heat (REST) 225
Clock 27, 174
Cloth upholstery, Cleaning and
care of 434
Cockpit 24
Cockpit Management and Data System
see COMAND System
Cold tire inflation pressure 416
Collapsible wheel chock 494
COMAND System see separate operating
instructions
Combination switch 61, 62, 64, 147
Compass 344
Adjustment 178
Calibration 179
Calling up the compass 344
Control and operation of radio
transmitters 370
Control system 155
Multifunction display 155
Multifunction steering wheel 156
Resetting to factory default 169Control system menus 155
AUDIO 164
DISTRONIC* (Canada only) 167
NAV* 166
Off-road 166
Settings 168
Standard display 162
TEL* 186
Trip computer 184
Vehicle configuration 182
Vehicle status message memory 167
Control system submenus 159, 161, 171
Comfort* 181
Instrument cluster 172, 173
Lighting 175
Time/Date 174
Vehicle 178
Coolant 381, 567
Anticorrosion/antifreeze mixing ratio
and quantity 568
Capacities 562
Checking coolant level 376, 381
Messages in the multifunction
display 470, 472
Temperature 372
Temperature display 162
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577 Index
Emergency operation
Fuel filler flap 497
Locking/unlocking the vehicle 496,
497
Emergency operation
(Limp-Home Mode) 200
Emergency operations
Exit for third-row seats 132
Remote door unlock, Tele Aid 337
Tailgate, Opening from the inside
manually 122
Emergency Tensioning Device see ETD
Emergency, In case of
Battery, Jump starting 536
Engine shut-down 545
First aid kit 490
Flat tire 519
Fuses 543
Hazard warning flasher 149
Instrument cluster, Indicator
lamps 436, 437, 438, 439, 440,
441, 442, 443, 444, 446
Roadside Assistance 12, 335
Towing the vehicle 538Emission control 372
Information label 551
System warranties 10
Engine
Belt layout (GL 450, GL 550) 552
Belt layout (GL 320 CDI) 552
Break-in recommendations 380
Cleaning 427
Compartment 378
Emergency engine shut-down 545
Malfunction indicator lamp 29
Maximum engine speed 153, 553
Number 551
Starting 56
Starting with KEYLESS-GO* 57
Starting with the SmartKey 57
Tachometer 29, 153
Technical data 553
Turning off with KEYLESS-GO* 69
Turning off with the SmartKey 69Engine coolant see Coolant
Engine oil 380, 564
Adding 381, 564
Additives 564
Changing 381, 564
Checking level 380
Checking with the oil dipstick 380
Consumption 380
Filler neck 381
Recommended engine oils and oil
filters 564
Enhanced Off-road Package*
Vehicle level control 283
ESP
®27, 103
Four wheel electronic traction system
with ESP
®103
Messages in the multifunction
display 457, 458
Off-road-ESP
®106
Warning lamp 27, 441
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