wheel bolt torque MERCEDES-BENZ ML350 2003 W163 Owner's Manual

212 OperationTires and wheelsRotating wheels
The wheels can be rotated every 3000 to
6000 miles (5 000 to 10 000 km) or sooner
if necessary, according to the degree of
tire wear. The same direction of tire rota-
tion must be retained.
Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).
Thoroughly clean the inner side of the
wheels after each rotation. Check and en-
sure proper tire inflation pressure.Information on changing a wheel can be
found in the “Practical hints” section
(
page 255).
Warning!
G
Rotate front and rear wheels only if they are
of the same size,
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
110 ft.lb. (150 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.

241 Practical hints
Where will I find ...?
4Wheel bolt
5Spare wheel
Unscrew the three wheel bolts using
the wrench (
page 237).

Take out the spare wheel.

Remove the electric air pump from its
holder (
page 238).
iAfter using the spare wheel, have it de-
flate at an authorized Mercedes-Benz
Light Truck Center. Store the deflated
spare wheel in its holder and tighten
the three wheel bolts with a tightening
torque of 37 ft.lb. (50 Nm).

258 Practical hintsFlat tireLowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.

Remove the jack.1-5 Wheel 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 ft lb (150 Nm).

Store jack and tool kit.
Warning!
G
Use only genuine equipment
Mercedes-Benz wheel bolts. They are identi-
fied by the Mercedes star. Other wheel bolts
may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
tip over.
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 ft lb (150 Nm).iThe removed road wheel cannot be
stored in the spare wheel carrier or in-
side the storage compartment in the
rear cargo area (ML 55 AMG), but
should be transported in the rear cargo
compartment wrapped in a protective
cover supplied with the vehicle.
The protective cover is located in the
rear cargo compartment behind the
cover in the right side trim panel.

296 Technical termsRON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as AN-
TI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission selector le-
ver from being moved out of positionP
without key turned and brake pedal de-
pressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.Tele Aid System*
(T
elematic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
viding that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is ap-
proved.
Traction
Force exerted by the vehicle on the
road via the tires.
Transfer case
Speed of rotation/torque converter
that works together with the ->auto-
matic transmission. In the LOW mode
off-road position, the transfer case de-
creases the output rotational speed of
the ->automatic transmission by ap-
proximately half. This results in a corre-
sponding increase of torque on the
drive axles.
The vehicle then has nearly double the
driving force but drives only approxi-
mately half as fast.

316 IndexSwitching off
Automatic climate control 127
ESP 76
Front fog lamps 106
Hazard warning flasher 106
Headlamps 51
Rapid seat heating 91
Rear fog lamp 106
Transmission control – LOW RANGE
mode 118
Switching on
Automatic climate control 126
ESP 77
Front fog lamps 105
Front fog lamps, rear fog lamp 105
Hazard warning flasher 106
Headlamps 46
High beams 102
Rapid seat heating 91
Seat heating 91
Transmission control – LOW RANGE
mode 118
Trip computer 172
Windshield wipers 47Synchronizing
Power windows 136
Remote control 244
Sliding/pop-up roof 138
T
Tachometer 26, 112
Displaying gear range 114
Tail lamps 251
Cleaning 220
Replacing bulbs 248
Tar stains 218
Technical data 286
Brake fluid 286
Coolants 287
Electrical system 281
Engine 278
Engine oil 286
Engine oil additives 286
Fuel requirements 287
Gasoline additives 287
Main dimensions 282
Premium unleaded gasoline 286
Rims and tires 279
Weights 283
Windshield and headlamp washer sys-
tem 290Tele Aid
Information 165
Initiating an emergency call manually
163
Roadside assistance 163
Tele Aid System 160
Tele Aid System* 296
Tele Aid* 159
Emergency calls 161
Remote door unlock 167
Stolen vehicle tracking services 168
System self-check 160
Upgrade signals 166
Telematics* 296
Telephone* 158
Temperature
Grades of tires 292
Tires 211
Third row seats* 96
Folding down single seat 96
Installing single seat 98
Removing single seat 98
Storing single seat 97
Tie-down rings (Cargo compartment) 140
Tightening torque 296
Tightening torque (Wheel bolts) 258

319 Index
Vehicle lighting
Checking 201
Vehicle tool kit 237
Vehicle with CD-changer* 238
Vehicle washing 219
VIN (Vehicle Identification Number) 276,
297
Voice control system* 297
W
Warning indicators
Parktronic* 150
Warning sounds
Drivers seat belts 60
Parking brake 46
Warranty coverage 275
Washer fluid see Windshield washer fluid
Washing the vehicle 217
Wear pattern (tires) 212
Weights 283
Wheel bolt wrench 237
Wheel change
Tightening torque 258
Wheels
Rotating 212
Tires and wheels 209Window curtain airbags 59
Windows see Side windows
Windshield
Defogging 128
Refilling washer fluid 208
Replacing wiper blades 254
Washer fluid 208, 290
Washer system 290
Windshield washer fluid 290
Filler neck 208
Mixing ratio 290
Refilling 208
Wiping with 48
Windshield washer system 290
Windshield wipers 47, 122
Intermittent 47
Interval wiping 122
Normal wiper speed 47
Rain sensor* 122
Rear window wiper/washer 48
Replacing wiper blades 254
Simultaneous wiping and washing 48
Single wipe 48
Switching on 47
Wiping with windshield washer fluid 48Winter driving 213
Block heater 214
Snow chains 214
Tires 213
Winter tires 280
Winter driving instructions 184
Winter tires 213, 280
Wiper blades
Cleaning 220
Installing 254
Removing 254
Replacing 254
Wiper switch 47
Wiper/washer
Rear window 48
Wiping
And washing simultaneously 48
Intermittent 47, 122
With windshield washer fluid 48
Wiping and washing simultaneously 48
X
Xenon headlamps
Bi-Xenon 293