spare wheel MERCEDES-BENZ C COUPE 2005 CL203 Owner's Manual

Contents
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 320
Tire ply material ........................... 322
Tire and loading terminology ........ 323
Rotating tires ............................... 326
Winter driving .................................... 328
Winter tires .................................. 328
Block heater (Canada only) .......... 329
Snow chains................................. 329
Maintenance...................................... 330
Clearing the maintenance
service indicator........................... 331
Maintenance service term
exceeded ..................................... 331
Calling up the maintenance
service indicator........................... 331
Resetting the maintenance
service indicator........................... 332
Vehicle care ....................................... 333
Cleaning and care of the vehicle .. 333
Practical hints.................................. 339
What to do if … ................................... 340
Lamps in instrument cluster ......... 340
Lamp in center console................. 345
Vehicle status messages in the
multifunction display..................... 347
Where will I find ...? ............................ 373
First aid kit.................................... 373
Vehicle tool kit .............................. 373
Spare wheel .................................. 375
Unlocking/locking in an emergency... 377
Unlocking the vehicle.................... 377
Locking the vehicle ....................... 379
Fuel filler flap ................................ 379
Manually unlocking the gear
selector lever ................................ 380
Opening/closing in an emergency ..... 381
Panorama roof with power
tilt/sliding panel* ......................... 381
Replacing SmartKey batteries ............ 382
SmartKey ...................................... 383
Replacing bulbs .................................. 384
Bulbs ............................................. 384
Replacing bulbs for front lamps .... 386
Replacing bulbs for rear lamps ..... 390Replacing wiper blades ...................... 393
Removing ...................................... 393
Installing ....................................... 393
Flat tire............................................... 394
Preparing the vehicle .................... 394
Mounting the spare wheel ............ 394
Battery ............................................... 401
Disconnecting the battery ............ 402
Removing the battery ................... 402
Charging and reinstalling battery .. 402
Reconnecting the battery ............. 403
Jump starting...................................... 404
Towing the vehicle.............................. 406
Installing towing eye bolt .............. 409
Fuses.................................................. 410
Aids for changing fuses ................ 410
Main fuse box in passenger
compartment ................................ 411
Fuse box in engine compartment . 411
Fuse box in trunk .......................... 412

ContentsTechnical data.................................. 413
Parts service ...................................... 414
Warranty coverage ............................. 415
Loss of Service and Warranty
Information Booklet...................... 415
Identification labels............................ 416
Layout of poly-V-belt drive ................. 417
C 230 Kompressor ....................... 417
C 320 ........................................... 417
Engine ................................................ 418
Rims and Tires ................................... 419
Same size tires ............................. 420
Mixed size tires ............................ 421
Spare wheel ................................. 422
Electrical system................................ 423
Main Dimensions ............................... 424
Weights .............................................. 425Fuels, coolants, lubricants, etc. ......... 426
Capacities .................................... 426
Engine oils.................................... 428
Engine oil additives ...................... 428
Air conditioning refrigerant .......... 428
Brake fluid .................................... 428
Premium unleaded gasoline ......... 429
Fuel requirements ........................ 429
Gasoline additives ........................ 430
Flexible Fuel Vehicles ................... 431
Coolants....................................... 432
Windshield washer system and
headlamp cleaning system ........... 435
Technical terms............................... 437Index................................................. 443

301 Operation
Tires and wheels
Tire care and maintenance
Regularly check your tire inflation pressure
at least once a month. For more informa-
tion on checking tire inflation pressure,
see “Recommended tire inflation pres-
sure” (
page 309).Tire inspection
Every time you check your tire inflation
pressure, you should also inspect your
tires for the following:


excessive treadwear (
page 302)


cord or fabric showing through the
tire’s rubber


bumps, bulges, cuts, cracks or splits in
the tread or side of the tire
Replace the tire if you find any of the above
conditions.
Make sure you also inspect the spare tire
periodically for condition and inflation.
Spare tires will age and become worn over
time even if never used, and thus should be
inspected and replaced when necessary.Life of tire
The service life of a tire is dependent upon
varying factors including but not limited to:


Driving style


Tire inflation pressure


Distance driven
Warning!
G
Regularly check the tires for damage. Dam-
aged tires can cause tire inflation pressure
loss. As a result, you could lose control of
your vehicle.
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
Warning!
G
Tires and spare tire should be replaced after
six years, regardless of the remaining tread.

303 Operation
Tires and wheels
Direction of rotation
Unidirectional tires offer added advan-
tages, such as better hydroplaning perfor-
mance. To benefit, however, you must
make sure the tires rotate in the direction
specified.
An arrow on the sidewall indicates the
intended direction of rotation (spinning) of
the tire.
Loading the vehicle
Two labels on your vehicle show how much
weight it may properly carry.

The Tire and Loading Information
placard (Example A) or the Vehicle Tire
Information placard (Example B) can be
found on the driver’s door B-pillar. This
placard tells you important information
about the number of people that can be
in the vehicle and the total weight that
can be carried in the vehicle. It also
contains information on the proper size
and recommended tire inflation
pressures for the original equipment
tires on your vehicle.


The Certification label, also found on
the driver’s door B-pillar tells you about
the gross weight capacity of your vehi-
cle, called the Gross Vehicle Weight
Rating (GVWR). The GVWR includes the
weight of the vehicle, all occupants,
fuel and cargo. The Certification label
also tells you about the front and rear
axle weight capacity, called the Gross
Axle Weight Rating (GAWR). The GAWR
is the total allowable weight that can be
carried by a single axle (front or rear).
Never exceed the GVWR or GAWR for
either the front axle or rear axle.
iSpare wheels may be mounted against
the direction of rotation (spinning) even
with a unidirectional tire for temporary
use only until the regular drive wheel
has been repaired or replaced. Always
observe and follow applicable tempo-
rary use restrictions and speed limita-
tions indicated on the spare wheel.

314 OperationTires and wheelsTire size designation, load and speed
rating
1Tire width
2Aspect ratio in %
3Radial tire code
4Rim diameter
5Tire load rating
6Tire speed ratingGeneral:
Depending on the design standards used,
the tire size molded into the sidewall may
have no letter or a letter preceding the tire
size designation.
No letter preceding the size designation
(as illustrated above): Passenger car tire
based on European design standards.
Letter “P” preceding the size designation:
Passenger car tire based on U.S. design
standards.
Letter “LT” preceding the size designation:
Light Truck tire based on U.S. design
standards.
Letter “T” preceding the size designation:
Temporary spare tires which are high
pressure compact spares designed for
temporary emergency use only. Tire width
The tire width1 (
page 314) indicates
the nominal tire width in mm.
Aspect ratio
The aspect ratio2 (page 314) is the
dimensional relationship between tire
section height and section width and is
expressed in percentage. The aspect ratio
is arrived at by dividing section height by
section width.
Tire code
The tire code3 (
page 314) indicates
the tire construction type. The “R” stands
for radial tire type. Letter “D” means diag-
onal or bias ply construction; letter “B”
means belted-bias ply construction.
At the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240 km/h) can include a “ZR” in the size
designation (for example: 245/40 ZR 18).
For additional information, see “Tire speed
rating” (
page 316).
iFor illustration purposes only. Actual
data on tires is specific to each vehicle
and may vary from data shown in above
illustration.

324 OperationTires and wheelsGVW (G
ross V
ehicle W
eight)
The GVW comprises the weight of the
vehicle including fuel, tools, spare wheel,
installed accessories, passengers and
cargo and, if applicable, trailer tongue
load. The GWV must never exceed the
GWVR indicated on the Certification label
located on the driver's door B-pillar.
GVWR (G
ross V
ehicle W
eight R
ating)
This is the maximum permissible vehicle
weight of the fully loaded vehicle (weight of
the vehicle including all options, passen-
gers, fuel, and cargo and, if applicable,
trailer tongue load). It is indicated on
Certification label located on the driver’s
door B-pillar.Kilopascal (kPa)
The metric unit for air pressure. There are
6.9 kPa to one psi; another metric unit for
air pressure is bars. There are
100 kilopascals (kPa) to one bar.
Maximum load rating
The maximum load in kilograms and
pounds that can be carried by the tire.
Maximum loaded vehicle weight
The sum of curb weight, accessory weight,
vehicle capacity weight and production
options weight.
Maximum tire inflation pressure
This number is the greatest amount of air
pressure that should ever be put in the tire
under normal driving conditions.Normal occupant weight
The number of occupants the vehicle is
designed to seat, multiplied by
68 kilograms (150 lbs).
Occupant distribution
The distribution of occupants in a vehicle
at their designated seating positions.
Production options weight
The combined weight of those installed
regular production options weighing over
5 lbs (2.3 kilograms) in excess of those
standard items which they replace, not
previously considered in curb weight or
accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty
battery, and special trim.

328 OperationWinter drivingBefore the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Center.
This service includes:

Check of anticorrosion and antifreeze
concentration.


Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
“S” to a premixed windshield washer
solvent / antifreeze which is formulated
for temperatures below freezing point
(page 435).


Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to ensure
that the engine can be started, even at
low ambient temperatures.


Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a
minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the
winter season.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Use of winter tires
is the only way to achieve the maximum
effectiveness of the ABS and ESP in winter
operation.
For safe handling, make sure that all
mounted winter tires are of the same make
and have the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your
vehicle, you must place a notice to this
effect where it will be seen by the driver.
Such notices are available at your tire deal-
er or any authorized Mercedes-Benz
Center.Warning!
G
Winter tires with a tread depth under
1/6 in
(4 mm) must be replaced. They are no long-
er suitable for winter operation.
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.

374 Practical hintsWhere will I find ...?Vehicle jack
Storage position
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).
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket. Al-
ways lower the vehicle onto sufficient ca-
pacity jack stands before working under the
vehicle.

375 Practical hints
Where will I find ...?
Setting up the collapsible wheel chock
The collapsible wheel chock serves to ad-
ditionally secure the vehicle, e.g. while
changing the wheel.
1Tilt the plates upward
2Fold the lower plate outward
3Insert the plate

Tilt both plates upward1.

Fold the lower plate outward2.

Guide the tabs of the lower plate all the
way into the openings of the base
plate3.
Spare wheel
The spare wheel is located under the trunk
floor.
Removing the spare wheel
Lift trunk floor.
1Spare wheel
2Storage tray with vehicle tool kit
3Mounting screw for spare wheel/cover
for vehicle tools

Turn the mounting screw3 counter-
clockwise.

Remove the spare wheel1.

376 Practical hintsWhere will I find ...?Storing the spare wheel
If you wish to store the spare wheel after
use, carry out the following steps. Other-
wise the spare wheel will not fit the wheel
well.
Unscrew the valve cap from the valve
of the spare wheel.

Carefully push the tip of the valve cap
into the spare wheel valve and allow
the air to escape.

Screw the valve cap back on the valve.

Place spare wheel1 in wheel well.

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

Install the trunk floor.Spare wheel bolts
1Wheel bolt for light alloy rims
2Wheel bolt for light alloy spare wheel
rim size 4
1/2B x15 H2For more information on model and spare
wheel rim size, see “Technical data”
section (
page 422).
iIt may take a few minutes for the col-
lapsible tire to deflate completely.
!Wheel bolts2 must be used when
mounting spare wheel rim
size 4
1/2Bx15 H2 (
page 422).
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 the original length wheel
bolts when remounting the original wheel af-
ter it has been repaired.