2004 MERCEDES-BENZ C320 COUPE spare tire

ContentsPractical hints.................................. 257
What to do if … .................................. 258
Lamps in instrument cluster ......... 258
Lamp in center console ................ 263
Messages in the display ............... 264
Where will I find ...?............................ 284
First aid kit ................................... 284
Spare wheel ................................. 285
Vehicle tool kit ............................. 285
Unlocking/locking in an emergency .. 288
Unlocking the vehicle ................... 288
Locking the vehicle ...................... 289
Changing batteries in
the SmartKey ............................... 290
Fuel filler flap ............................... 291
Manually unlocking the
gear selector lever........................ 291
Opening/closing in an emergency ..... 292
Panorama sliding/pop-up roof ..... 292
Replacing bulbs ................................. 293
Bulbs ............................................ 293
Replacing bulbs for front lamps.... 295
Side marker lamp bulb ................. 298
Replacing bulbs for rear lamps ..... 298
Replacing wiper blades ...................... 300Removing ..................................... 300
Installing ...................................... 300
Flat tire .............................................. 301
Preparing the vehicle ................... 301
Mounting the spare wheel ............ 301
Battery ............................................... 307
Disconnecting the battery ............ 308
Removing the batteries ................ 308
Charging and reinstalling
batteries....................................... 308
Reconnecting the batteries .......... 308
Jump starting ..................................... 310
Towing the vehicle ............................. 313
Installing towing eye bolt ............. 316
Fuses ................................................. 317
Fuse box in
passenger compartment .............. 317
Fuse box in engine compartment . 317
Auxiliary fuse box in trunk ............ 318
Technical data................................. 319
Spare parts service ............................ 320
Warranty coverage............................. 321
Loss of Service and Warranty
Information Booklet ..................... 321Identification labels ........................... 322
Layout of poly-V-belt drive ................. 323
C 230 Kompressor ....................... 323
C 320 ........................................... 323
Engine ............................................... 324
Rims and Tires ................................... 325
Same size tires............................. 326
Spare wheel ................................. 326
Electrical system ............................... 327
Main Dimensions ............................... 328
Weights ............................................. 329
Fuels, coolants, lubricants, etc. ......... 330
Capacities .................................... 330
Engine oils ................................... 332
Engine oil additives ...................... 332
Air conditioning refrigerant .......... 332
Brake fluid.................................... 332
Premium unleaded gasoline ......... 333
Fuel requirements ........................ 333
Gasoline additives ........................ 334
Flexible Fuel Vehicles................... 334
Coolants ...................................... 336
Windshield washer system and
headlamp cleaning system........... 338
Consumer information ....................... 339
Uniform tire quality grading ......... 339

210 Controls in detailUseful featuresRoadside Assistance button•
The Roadside Assistance button• is
located below the center armrest cover.
Press and hold the button (for longer
than two seconds).
A call to a Mercedes-Benz Roadside As-
sistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message
TELE DIAGNO-
SIS – CONNECTING CALL will appear in
the multifunction display.
When the connection is established, the
message
TELE DIAGNOSIS - CALL CON-
NECTED
appears in the multifunction dis-
play. The Tele Aid system will transmit data
generating the vehicle identification num-
ber, model, color and location (subject to
availability of cellular and GPS signals).
A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established. When a
voice connection is established the audio system mutes and the message
TELE AID
– ROADSIDE ASSISTANCE CALL ACTIVE
ap-
pears in the multifunction display.

Describe the nature of the need for as-
sistance.
The Mercedes-Benz Roadside assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest
Mercedes-Benz Center. For services such
as labor and/or towing, charges may ap-
ply. Refer to the Roadside Assistance man-
ual for more information.
These programs are only available in the
USA:


Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire with the
vehicle spare tire are obtainable.


Remote Vehicle Diagnostics: This func-
tion permits the Mercedes-Benz Road-
side Assistance dispatcher to
download malfunction codes and actu-
al vehicle data.
iThe indicator lamp in the Roadside As-
sistance button• remains illumi-
nated in red for approx. ten seconds
during the system self-check after turn-
ing the SmartKey in the starter switch
to position2 (together with the “SOS”
button and the Information
button¡).
See system self-check (
page 207)
when the indicator lamp does not come
on in red or stays on longer than ap-
proximately ten seconds.
If the indicator lamp in the Roadside
Assistance button• is illuminated
continuously and there was no voice
connection to the Response Center es-
tablished, then the Tele Aid system
could not initiate a Roadside Assis-
tance call (e.g. the relevant cellular
phone network is not available). The
message
TELE DIAGNOSIS – CALL
FAILED
appears in the multifunction
display.

245 Operation
Tires and wheels
Life of tire
The service life of a tire is dependent upon
varying factors including but not limited to:

Driving style


Tire pressure


Distance driven
Direction of rotation
Unidirectional tires offer added advantag-
es, such as better aquaplaning perfor-
mance. To benefit, however, you must
ensure that the tires rotate in the direction
specified.
An arrow on the sidewall indicates the in-
tended direction of tire rotation.Checking tire inflation pressure
Correct the tire pressure only when tires
are cold.
Regularly check your tire pressure at inter-
vals of no more than 14 days. If the tires are warm you should only cor-
rect the tire pressure if it is too low for cur-
rent operating conditions.
A table on the fuel filler flap lists the spec-
ified tire inflation pressures for warm and
cold tires as well as for various operating
conditions.
Warning!
G
Tires and spare tire should be replaced after
six years, regardless of the remaining tread.!Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact
with oil, grease and gasoline.
Warning!
G
If the tire pressure drops repeatedly:

Check the tires for punctures from for-
eign objects.


Check to see whether air is leaking from
the valves or from around the rim.
iThe pressures listed for light loads are
minimum values offering high driving
comfort.
Increased inflation pressures listed for
heavier loads may also be used for light
loads. These higher pressures produce
favorable handling characteristics. The
ride of the vehicle, however, will be
somewhat harder. Never exceed the
max. values or inflate tires below the
min. values listed in the fuel filler flap.

246 OperationTires and wheelsTire pressure changes by approximately
1.5 psi (0.1 bar) per 18°F (10°C) of air
temperature change. Keep this in mind
when checking tire pressure where the
temperature is different from the outside
temperature.
Tire temperature and tire pressure are also
increased while driving, depending on the
driving speed and the tire load.Check the spare tire periodically for condi-
tion and inflation. Spare tires will age and
b e c o m e w o r n o v e r t i m e e v e n i f n e v e r u s e d ,
and thus should be inspected and replaced
when necessary.
Rotating wheels
On vehicles with the same wheel size all
around, wheels can be rotated every 3000
to 6000 miles (5 000 to 10 000 km), or sooner if necessary, according to the de-
gree of tire wear. The same direction of tire
rotation 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.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.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
80 lb-ft (110 Nm).
Use only genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.

248 OperationWinter drivingBlock heater (Canada only)
The engine is equipped with a block heat-
er.
The electrical cable may be installed at
your authorized Mercedes-Benz Center.
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to ex-
ceed 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.


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. Your
authorized Mercedes-Benz 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.
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 Center.
iWhen driving with snow chains, you
may wish to deactivate the ESP
(page 75) before setting the vehicle
in motion. This will improve the vehi-
cle‘s traction.
!Use of snow chains is not permissible
with tire sizes:

225/45 R17

301 Practical hints
Flat tire
Flat tire
Preparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.

Turn on the hazard warning flashers.

Engage the steering wheel lock in the
straight ahead position and set the
parking brake.

Move the gear selector lever toP (man-
ual transmission to 1st or reverse
gear).

Have any passenger exit the vehicle at
a safe distance from the roadway.
Mounting the spare wheel Preparing the vehicle
Prepare the vehicle as described under
“Preparing the vehicle” on this page.

Take the wheel wrench and the jack
out of wheel well below the trunk floor
(page 285).

Take the spare wheel out of the trunk
(page 285).
Lifting the vehicle

Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
(not included) or other sizable objects.
When changing wheel on a level surface:

Place one chock in front of and one be-
hind the wheel that is diagonally oppo-
site to the wheel being changed.
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style accord-
ingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted, en-
sure proper tire pressure and do not exceed
vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.

303 Practical hints
Flat tire
Removing 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.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 304).
!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
1/2Bx15 H2 (
page 326).
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
Make sure to use original length 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.

304 Practical hintsFlat tire

Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Inflating the spare tire

Take the electric air pump out of the
trunk.
1Flap
2Air hose with pressure gauge and vent
screw
3Union nut
4Electrical plug
Please exercise appropriate caution
!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 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 mounting
bolts.
Warning!
G
Use only genuine equipment
Mercedes-Benz wheel bolts. 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
Observe instructions on air pump label.