2004 MERCEDES-BENZ C CLASS COUPE fuel cap

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 ...................... 300 Removing ..................................... 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 ..................... 321 Identification 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

233
Operation
At the gas station
 At the gas station
Refueling The fuel filler flap is located on the
right-hand side of the vehicle towards the
rear. Locking/unlocking the vehicle with
the remote control automatically
locks/unlocks the fuel filler flap.

Turn off the engine

Remove the SmartKey from the starter
switch.

Open the fuel filler flap by pushing at
the point indicated by the arrow.
The fuel filler flap springs open.

Turn the fuel cap to the left and hold on
to it until possible pressure is released.

Take off the cap and set it in the recess
on the fuel filler flap.
To prevent fuel vapors from escaping
into open air, fully insert filler nozzle
unit.

Only fill your tank until the filler nozzle
unit cuts out – do not top up or overfill.

Replace the fuel cap by turning it to the
right.
You should hear the fuel cap engage.

Close the fuel filler flap.
Warning!
G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious inju-
ry. Whenever you are around gasoline, avoid
inhaling fumes and skin contact, extinguish
all smoking materials. Never allow sparks,
flame or smoking materials near gasoline! Warning!
G
Flexible Fuel Vehicles (identified by a label
reading Premium gasoline or E85 only! on
fuel filler flap):
Ethanol fuel (E85) and its vapors are highly
flammable, poisonous and burn easily. Etha-
nol fuel can cause serious injuries if ignited
or if you come into contact with it or inhale
fumes of it. Avoid inhalation of Ethanol
fumes and skin contact with Ethanol. Extin-
guish all open flames before refueling. Never
smoke or create sparks close to Ethanol.
Warning!
G
Overfilling of the fuel tank may create pres-
sure in the system which could cause a gas
discharge. This could cause the gas to spray
back out when removing the fuel pump noz-
zle, which could cause personal injury.


234 OperationAt the gas station
Check regularly and before a long trip1 Coolant level
For more information, see “Coolant lev-
el” (
page 241).
2 Brake fluid (fuse box cover removed)
Removing fuse box cover, see “Fuses”
(
page 317).
3 Windshield washer and headlamp
cleaning system*
For more information on filling up the
washer reservoir, see “Windshield
washer system and headlamp cleaning
system” (
page 243).
iUse only premium unleaded gasoline
with a minimum Posted Octane Rating
of 91 (average of 96 RON / 86 MON).
Information on gasoline quality can
normally be found on the fuel pump.
More information on gasoline can be
found in the Factory Approved Service
Products pamphlet.
Flexible Fuel Vehicles are identified by
a label reading Premium gasoline or
E85 only! on the fuel filler flap.
For more information,see “Flexible Fuel
Vehicles” (
page 334).
iLeaving the engine running and the fuel
cap open can cause the ? lamp to
illuminate.
For more information , see“Practical
hints” section (
page 260).


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.

260 Practical hintsWhat to do if …Problem
Possible cause
Suggested solution
?
The yellow “CHECK ENGINE”
malfunction indicator lamp
comes on while driving.
There is a malfunction in:

The fuel management system


The ignition system


The emission control system


Systems which affect emissions
Such malfunctions may result in excessive
emissions values and may switch the engine
to its limp-home (emergency operation)
mode.

Have the vehicle checked as soon as
possible by an authorized
Mercedes-Benz Center.
An on-board diagnostic connector is
used by the service station to link the
vehicle to the shop diagnostics sys-
tem. It allows the accurate identifica-
tion of system malfunctions through
the readout of diagnostic trouble
codes. It is located in the front left
area of the footwell next to the
parking brake pedal.
The fuel cap is not closed tight.

Check the fuel cap.
Your gas tank is empty.

After refuelling start the engine three
or four times in succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.

277
Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
A
RESERVE FUEL
GO TO GAS STATION!
The fuel level has dropped below the
reserve mark.

Refuel at the next gas station
(page 233).
CHECK GAS CAP!
SEE OPERATOR’S MANUAL
The fuel cap is not closed tightly.

Check the fuel cap.
Y
HOOD OPEN!
You are driving with the hood open.

Close the hood (
page 236).
I
REMOVE KEY!
You have forgotten to remove the
SmartKey.

Remove the SmartKey from the starter
switch.
REPLACE KEY!
DRIVE TO WORKSHOP!
No additional code available for
SmartKey.

Change the SmartKey.
.
3RD BRAKE LIGHT
CHECK LIGHT!
The high mounted brake lamp is
malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
AUTOM. LIGHT ON
REMOVE KEY!
SmartKey in starter switch position
1
or 2.

Remove SmartKey from the starter
switch.
BRAKE LIGHT
DRIVE TO WORKSHOP!
Brake lamp illumination is delayed or
lamp is permanently on.

Visit an authorized Mercedes-Benz
Center as soon as possible.
BRAKE LIGHT, L
CHECK LIGHT!
The left brake lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
BRAKE LIGHT, R
CHECK LIGHT!
The right brake lamp is malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.

Visit an authorized Mercedes-Benz
Center as soon as possible.

305
Practical hints
Flat tire

Open flap
1 on air pump.

Pull out electrical plug 4 and air hose
with the pressure gauge 2.
Observe instructions on air pump label.

Remove the valve cap from valve.

Screw the air hose 2 on to the tire
valve.

Insert electrical plug 4 into vehicle
cigarette lighter socket.

To switch on the air pump turn the
SmartKey in the starter switch to
position 1 (
page 31).

Operate air pump until the pressure
gauge displays 36 psi (2.5 bar)
This takes about five minutes for the
space tire. The air hose 2 and the
union nut 3 can become hot during in-
flation.

To switch off the air pump turn the
SmartKey in the starter switch to
position 0 (
page 31).

If the tire pressure is above 36 psi
(2.5 bar), release excess tire pressure
using the vent screw.

Detach the electric air pump.

Store the electrical plug and the air
hose behind the flap and place the air
pump back in the trunk.
!Do not operate the electric air pump
longer than eight minutes without in-
terruption. Otherwise it may overheat.
You may operate the air pump again af-
ter it has cooled off.
Warning!
G
Follow recommended inflation pressures.
Do not overinflate tires. Overinflated 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. Underinfalted 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 driver’s door latch
post). Overloading the tires can overheat
them, possibly causing a blowout.

330 Technical dataFuels, coolants, lubricants, etc.
Fuels, coolants, lubricants, etc.Capacities Vehicle components and their respective
lubricants must match. Therefore use only
brands tested and approved by Mercedes-Benz. Please refer to the Facto-
ry Approved Service Products pamphlet, or
inquire at your Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
C230Kompressor
C320
5.8 US qt (5.5 l)
7.9 US qt (7.5 l)
approved engine oils
Automatic transmission
8.5 US qt (8.0 l)
MB Automatic Transmission Oil
Manual transmission
1.3 US qt (1.2 l)
MB Manual Transmission Oil
Rear axle
1.2 US qt (1.1 l)
Hypoid gear oil SAE 85 W 90
Power steering
approx. 1.1 US qt (1.0 l)
MB Power Steering Fluid (Pentosin CHF 11S)
Front wheel hubs
approx. 2.1 oz (60 g) each
High temperature roller bearing grease
Cooling system
C230Kompressor
C320
approx. 5.9 US qt (5.6 l)
approx. 6.8 US qt (6.4 l)
MB 325.0 Anticorrosion/Antifreeze Agent