2003 MERCEDES-BENZ C320 COUPE wheel alignment

272 Practical hintsWhere will I find ...?Storing the spare wheel
Place spare wheel1 in wheel well.

Turn mounting screw3 clockwise to its
stop to secure the spare wheel.

Lower the trunk floor before closing the
trunk lid.
Vehicle tool kit
The vehicle tool kit and air pump are stored
in the wheel well below the trunk floor.
1Vehicle jack
2Air pump
3Alignment bolt
4Wheel wrench5Towing eye bolt
6Spare wheel bolts
Vehicle jack

Remove the vehicle jack from the spare
wheel well under the trunk floor.

Push the crank handle up.

Turn the crank handle clockwise until it
engages (operational position).
Before storing the vehicle jack in its com-
partment:


It should be fully collapsed.


The handle must be folded in (storage
position).

290 Practical hintsFlat tireRemoving the wheel
1Alignment bolt
Unscrew upper-most wheel bolt and re-
move.

Replace this wheel bolt with the align-
ment bolt1 supplied in the tool kit.

Remove the remaining bolts.

Remove the wheel.

Take the spare tire out of the trunk.
Mounting the new wheel
1Wheel bolt for light alloy rims
2Wheel bolt for light alloy spare wheel
rim size 4
1/2B x15 H2

Clean contact surfaces of wheel and
wheel hub.

Guide the spare wheel onto the align-
ment bolt and push it on.

Insert wheel bolts and tighten them
slightly.

Inflate the spare tire using the electric
pump (
page 292).
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.
!Wheel bolts2 must be used when
mounting spare wheel rim
size 4
1/2B x 15 H2 (
page 313).
The use of any wheel bolts other than
wheel bolts2 for spare wheel rim
size 4
1/2B x15 H2 can cause physical
damage to the vehicle.
Warning!
G
Be sure to use original lenght wheel bolts
when remounting the original wheel after it
has been repaired.Warning!
G
Inflate spare wheel with collapsible tire only
after the wheel is properly mounted.
Inflate the spare wheel tire using the electric
air pump before lowering the vehicle.


291 Practical hints
Flat tire

Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Lowering 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 80 ft lb
(110 Nm).
!To avoid paint damage, place wheel flat
against hub and hold it there while in-
stalling first wheel bolt.Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect mounting bolts or improperly
tightened mounting bolts can cause the
wheel to come off. This could cause an acci-
dent. Be sure to use the correct mounting
bolts.
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.


327 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.
BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp
7
in the center console lights
up). See your authorized
Mercedes-Benz Center for availability.BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger side airbag if a BabySmart
TM
compatible child seat is installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.

354 IndexVehicle tool kit 272
Alignment bolt 272
Spare fuses 272
Special fuse puller 272
Towing eye bolt 272
Vehicle jack 272
Wheel bolts 272
Wheel wrench 272
Vehicle washing 242
Ventilated storage compartment 148
Ventilation
Storage compartment 148
VIN (Vehicle Identification Number) 308,
331
Voice control system* 331
Voice recognition system*
Hands-free microphone 26
W
Warning sounds
Drivers seat belts 62
Parking brake 46
Warranty coverage 307
Washer fluid see Windshield washer fluid
Washing the vehicle 240
Wear pattern (tires) 235
Weights 316Wheel change
Tightening torque 291
Wheels
Rotating 235
Tires and wheels 233
Window curtain airbags 61
Windows see Side windows
Windshield
Defogging 145, 153
Refilling washer fluid 232
Replacing wiper blades 287
Washer fluid 232, 324
Washer system 324
Windshield washer fluid 324
Message in display 270
Mixing ratio 324
Refilling 232
Wiping with 49
Windshield washer system 324
Windshield wipers 48
Fast wiper speed 48
Replacing wiper blades 287
Single wipe 49
Switching on 48
Wiping with windshield washer fluid 49Winter driving 236
Block heater 237
Snow chains 237
Tires 236
Transmission program mode 136
Winter driving instructions 220
Winter tires 236
Wiper blades
Cleaning 243
Installing 287
Removing 287
Removing insert 287
Replacing 287
Wiping
And washing simultaneously 49
Interval 48
With windshield washer fluid 49
X
Xenon headlamps
Bi-Xenon 327