winter tires MERCEDES-BENZ GL550 2008 X164 User Guide

421 Operation
Winter driving
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to
exceed 30 mph (50 km/h). Remove chains
as soon as possible when driving on roads
without snow.Please observe the following guidelines
when using snow chains:

Use of snow chains is not permissible
with all wheel/tire combinations
(
page 555).

Snow chains should only be used on
the rear wheels. Follow the manufac-
turer’s mounting instructions.

Only use snow chains that are
approved by Mercedes-Benz. Any
authorized Mercedes-Benz Light Truck
Center will be glad to advise you on this
subject.

Use of snow chains may be prohibited
depending on location. Always check
local and state laws before installing
snow chains.

Do not use snow chains on the spare
wheel (
page 558).
Warning!G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turning stability and that
overall driving stability may be reduced.
Adapt your driving style accordingly.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Light Truck Center.!Even on vehicles with all-wheel-drive use
snow chains on rear tires only.
Some tire sizes do not leave adequate clearance
for snow chains. To help avoid serious damage to
your vehicle or tires, use of snow chains is not
permissible with the spare wheel.
!Vehicles with ADS*:
When driving with snow chains, do not select
SPORT mode (
page 279).
iWhen driving with snow chains, you may
wish to deactivate the ESP® (page 105)
before setting the vehicle in motion. This will
improve the vehicle’s traction.
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465 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Tire Pressure Monitor
InoperativeThe TPMS or Advanced TPMS* is
malfunctioning.Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Tire Pressure Monitor
Inoperative
No Wheel SensorsThere are wheels without appropriate
wheel sensors mounted (e.g. winter tires).Have the TPMS or Advanced TPMS* checked by an
authorized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Tire Pressure Monitor
Wheel Sensor MissingVehicles with Advanced TPMS*:
One or more sensors are defect (e.g.
battery is empty).
The respective tire is indicated by
- - -
instead of the tire inflation pressure in the
multifunction display.
Have the Advanced TPMS* checked by an autho-
rized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Vehicles with Advanced TPMS*:
One or more wheels without appropriate
wheel sensors mounted (e.g. spare tire).
The respective tire is indicated by
- - -
instead of the tire inflation pressure in the
multifunction display.
Have the Advanced TPMS* checked by an autho-
rized Mercedes-Benz Light Truck Center.
Have the wheel sensors installed by an authorized
Mercedes-Benz Light Truck Center.
Tire Pressure Monitor
Currently UnavailableThe TPMS or Advanced TPMS* is unable to
monitor the tire pressure due to a nearby
radio interference source.As soon as the causes of the malfunction have been
removed, the TPMS or Advanced TPMS* automati-
cally becomes active again after a few minutes
driving.
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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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556 Technical data
Rims and tires
Same size tires
ModelGL 320 CDI
GL 450GL 320 CDI*
GL 450*GL 320 CDI*
GL 450*
Rims (light alloy)8J x 18 H28.5 J x 19 H28.5 J x 20 H2
Wheel offset2.36 in (53 mm)2.20 in (56 mm)2.20 in (56 mm)
Summer tires1 --275/50 R20 109W
All-season tires1265/60 R18 110H M+S275/55 R19 111H M+S-
Rims (light alloy)8J x 18 H28.5 J x 19 H28.5 J x 19 H2
Wheel offset2.36 in (53 mm)2.20 in (56 mm)2.20 in (56 mm)
Winter tires1,2
1Radial-ply tires2Not available as factory equipment.
265/60 R18 110H M+S.265/55 R19 109H M+S .265/55 R19 109H M+S .
All-terrain tires1,2265/60 R18 110H M+S275/55 R19 111H M+S275/55 R19 111H M+S
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557 Technical data
Rims and tires
ModelGL 550
AMG rims (light alloy)10 J x 21 H2
Wheel offset1.46 in (37 mm)
All-season tires1,2
1Radial-ply tires2Must not be used with snow chains.
295/40 R21 111V XL (Extra Load) M+S
Rims (light alloy)8.5 J x 19 H2
Wheel offset2.20 in (56 mm)
Winter tires1,3
3Not available as factory equipment.
265/55 R19 109H M+S .
All-season tires1,3265/55 R19 109H M+S .
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589 Index
Vehicle level control 279
Shifting
Automatic transmission 56, 189
Side impact air bags 80
Side marker lamps
Cleaning lenses 429
Messages in the multifunction
display 480
Replacing bulbs 510, 513
Side windows see Power windows
Sidewall 417
SmartKey see Key, SmartKey
SmartKey see Key, SmartKey with
KEYLESS-GO*
Snow chains 421
Snow tires see Winter tires
Spare wheel 494
Mounting 520
Wheel bolts 492, 525
Speed settings
Cruise control 257
Distronic* 266
Speedometer 27, 263Spinning see Tires, Direction of rotation
SRS 88
Indicator lamp 29, 446
Messages in the multifunction
display 446
Standing lamps 143
Replacing bulbs 504, 505, 509, 511,
513
Standing water, Driving through 360
Starter switch 25, 42
Positions 42
Starting difficulties, Engine 59
Starting, Engine 56
Steep terrain, Driving 358
Steering column 49, 50
Steering wheel 48
Adjustment, Electrically* 50
Adjustment, Manually 49
Buttons 30, 156
Cleaning 433
Steering wheel gearshift control,
Automatic transmission 198
Stolen Vehicle Recovery services 338Storage compartments 36, 315
Cup holder 320
Cup holders 320
Door pockets 36
Front center console 317
Glove box 315
Parcel net, Front passenger
footwell 319
Parcel nets, Front seat backrest 319
Rear seats, In front of 318
Storage/telephone* compartment
Armrest, Front 317
Storing tires 386
Stranded vehicle 542
Submenus see Control system submenus
Sun visors 210
Sunroof see Power tilt/sliding sunroof*
Sunshade
Rear panorama roof 212
Suspension tuning see Air suspension
program
Symbols used in this Operator’s
Manual 16
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592 Index
Important notes, Tire inflation
pressure 394
Inflation pressure 377, 393, 395
Information placard 388
Inspection 385
Load rating 406, 407, 417
Loading Information 388
Loading terminology 415
Loading the vehicle 387
Low tire pressure telltale, Canada
only 27, 444
Maximum load 418
Messages in the multifunction
display 444
Ply composition and material
used 418
Problems under-/overinflation 405
Retreads 384
Rims and tires 555
Rotating 387
Run Flat Indicator (Canada only) 396
Service life 385
Sizes 406
Snow chains 421
Spare wheel 494, 520
Speed rating 353, 408, 418Storing 386
Temperature 394, 414
Terminology 415
TIN 410, 417
Tire Identification Number see TIN
Tire Pressure Monitoring System
(TPMS), (USA only) 398
TPMS malfunction telltale 444
Traction 352, 414, 418
Tread 418
Tread depth 386, 420
Treadwear indicators 418
Vehicle maximum load on 418
Wear pattern 419
Winter tires 420
Tongue Weight Rating see TWR
Tools 490
Top tether
Children in the vehicle 96
Towing
Trailer 197, 364, 367
Towing eye bolt 540
Towing the vehicle 540, 542
Tow-starting 536, 538Traction 414, 418
4-ETS, Driving safety systems 101,
107
Trailer
Attaching 366
Checking weights 366
Electrical connections 365
Hitch* 364
Loading 365
Towing 364, 367
Weights and ratings 365
Transfer case 201
LOW RANGE mode* 201
Switching LOW RANGE mode* 202
Transmission gear selector lever see
Gear selector lever
Transmission position indicator 155
Transmission positions 192
Transmission see Automatic transmission
Traveling abroad 370
Tread 418
Tread depth 386, 420
Treadwear indicators 418
Trip computer 184
Trip odometer, resetting 153
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594 Index
Vehicle status message memory
menu 167
Vehicle tool kit 490
Vehicle washing 427
VIN 551
Voice control system*
Button on multifunction steering
wheel 30, 156
Hands-free microphone 34
W
Warning indicators
Parktronic* 290
Warning lamps see Lamps, Indicator and
warning
Warning sounds
Distance warning function* 272
Distronic* 263
Exterior lamps 143
Parking brake 60
Parktronic* 292
Seat belt telltale 86Warranty coverage 10, 549
Washer fluid see Windshield washer fluid
Washer reservoir level 569
Washing the vehicle 425
Wear pattern, Tires 419
Weights, Vehicle 561
Wheel
Bolts 492
Change 520
Removing 524
Spare 495, 520
Tightening torque 526
Wheel, Tires and 384
Wheels
Sizes 556
Window curtain air bags 80
Windows see Power windows
Windows, cleaning 431
Windshield
Cleaning 431
Cleaning wiper blades 431
Cleaning, Windshield washer fluid 64
Defogging 222, 237
Infrared reflecting* 344
Washer fluid 383, 563, 569Windshield washer fluid
Messages in the multifunction
display 483
Mixing ratio 569
Refilling 383
Reservoir level 383
Wiping with 64
Windshield washer system 383, 569
Windshield wipers 62
Cleaning wiper blades 431
Fast continuous wiping 63
Fast intermittent wiping 63
Rear window wiper/washer 64
Replacing wiper blades 516
Slow continuous wiping 63
Slow intermittent wiping 63
Winter driving 420
Snow chains 421
Tires 420
Winter driving instructions 353
Winter tires 420
Wood trims, cleaning 434
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