2003 MERCEDES-BENZ C240 4MATIC WAGON engine

311 Practical hints
Towing the vehicle
!To be certain to avoid a possibility of
damage to the drive train, however, we
recommend the drive shaft be discon-
nected at the rear axle drive flange
(vehicles with 4MATIC*: disconnected
at the front and rear axle drive flanges)
for any towing beyond a short tow to a
nearby garage.
Warning!
G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:

the engine will not run


there is a malfunction in the power
supply or in the vehicle’s electrical
system
as that will be necessary to adequately
control the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make certain that the key is in
starter switch position2.
If the key is left in starter switch position0
for an extended period of time, it can no
longer be turned in the switch. In this case,
the steering is locked. To unlock, remove
key from starter switch and reinsert.
iTo signal turns while being towed with
the hazard warning flasher in use, turn
key in starter switch to position2 and
activate the combination switch for the
left or right turn signal in the usual
manner – only the selected turn signal
will operate.
Upon canceling the turn signal, the
hazard warning flasher will operate
again.
S203 MY03_A.book Page 311 Tuesday, January 28, 2003 2:22 PM

312 Practical hintsTowing the vehicleWarning!
G
With the engine not running, there is no
power assistance for the braking and steer-
ing systems. In this case, it is important to
keep in mind that a considerably higher
degree of effort is necessary to brake and
steer the vehicle. Adapt your driving accord-
ingly.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking
activated and the key in starter switch
position2, the vehicle doors lock if the
left front wheel as well as the right rear
wheel are turning at vehicle speeds of
approx. 9 mph (15 km/h) or more.
Switch off the tow-away alarm
(page 80).
To prevent the vehicle doors from
locking, deactivate the automatic
central locking (
page 88).
Towing of the vehicle should only be
done using the properly installed
towing eye bolt. Never attach tow
cable, tow rope or tow rod to vehicle
chassis, frame or suspension parts.
iIf the battery is disconnected or
discharged

the key will not turn in the starter
switch. See notes on the battery
(page 305) or on jump starting
(page 308).


the selector lever will remain
locked in positionP. See notes on
manual unlocking of gear selector
lever (
page 289).
S203 MY03_A.book Page 312 Tuesday, January 28, 2003 2:22 PM

314 Practical hintsFuses
FusesFuse box in passenger compartmentOpening

Pull cover1 open with a screw driver or
similar tool.

Remove cover rearward.
Closing

Attach the cover in the front.

Fold the cover in until it engages.
Fuse chart
The fuse chart is found in the fuse box in
the passenger compartment. The amper-
ages of the fuses are also given there.
Fuse box in engine compartment
The fuse box is located in the engine com-
partment on the left-hand side.
1Screw
2Cover
3Retainer
Removing/installing cover
Twist screws1 90° counterclockwise.

Pull up cover2.

Slide out retainer3 and remove cover
by pulling towards front.

Install cover2 in reverse order.
iOnly install fuses that have been tested
and approved by Mercedes-Benz and
that have the specified amperage rat-
ing.
Never attempt to repair or bridge a
blown fuse. Have the cause determined
and remedied by an authorized
Mercedes-Benz Center.
S203 MY03_A.book Page 314 Tuesday, January 28, 2003 2:22 PM

317 Technical data
Spare parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and Tires
Electrical system
Main Dimensions
Weights
Fuels, coolants, lubricants etc.
Consumer information
S203 MY03_A.book Page 317 Tuesday, January 28, 2003 2:22 PM

320 Technical dataIdentification labels
Identification labels1Certification label2Vehicle Identification Number (VIN)3Information label, California version
Vacuum line routing for emission con-
trol system
4Engine number (engraved on engine)
5VIN, visible (lower edge of windshield)
6Emission control label
When ordering spare parts, please specify
vehicle identification and engine numbers.S203 MY03_A.book Page 320 Tuesday, January 28, 2003 2:22 PM

322 Technical dataEngine
EngineModel
C 240 (203.261)
1
1The quoted data apply only to the standard vehicle. See an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equipment.
C 320 (203.264)
1
C 240 4MATIC (203.281)
1
C 320 4MATIC (203.284)
1
Engine
112
112
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
6
6
Bore
3.54 in (89.90 mm)
3.54 in (89.90 mm)
Stroke
2.68 in (68.20 mm)
3.31 in (84.00 mm)
Total piston displacement
158.5 cu.in. (2 597 cm
3)
195.2 cu.in. (3 199 cm
3)
Compression ratio
10.5:1
10:1
Output acc. to SAE J 1349
167 hp / 5 500 rpm
(125 kW / 5 500 rpm)
214 hp / 5 700 rpm
(160 kW / 5 700 rpm)
Maximum torque acc. to SAE J 1349
177ft.lb/4500rpm
(240 Nm / 4 500 rpm)
229 ft.lb / 3 000 rpm
(310 Nm / 3 000 rpm)
Maximum engine speed
6000 rpm
6000 rpm
Firing order
1-4-3-6-2-5
1-4-3-6-2-5
Poly-V-belt
7ft 10in (2390mm)
7 ft 10 in (2 390 mm)
S203 MY03_A.book Page 322 Tuesday, January 28, 2003 2:22 PM

328 Technical dataFuels, coolants, lubricants etc.
Fuels, coolants, lubricants etc.Capacities
Vehicle components and their respective lubricants must match. Therefore use only
brands tested and recommended by us.
Please refer to the Factory Approved Service Products pamphlet, or inquire at
your Mercedes-Benz Center.
Model
Capacity
Fuels, coolants, lubricants etc.
Engine with oil filter
C 240
C 320
C 240 4MATIC
C 320 4MATIC
7.9 US qt (7.5 l)
7.9 US qt (7.5 l)
7.4 US qt (7.0 l)
7.4 US qt (7.0 l)
Recommended engine oils
Automatic transmission
8.5 US qt (8.0 l)
MB Automatic Transmission Oil
1
1MB part no. 001 989 21 03 10Manual transmission
1.3 US qt (1.2 l)
MB Manual Transmission Oil
2
2MB part no. 001 989 26 03 10Rear axle
1.2 US qt (1.1 l)
Hypoid gear oil SAE 85 W 90
Front axle
C 240 4MATIC
C 320 4MATIC
0.5 US qt (0.46 l)
Hypoid gear oil SAE 85 W 90
Transfer case
C 240 4MATIC
C 320 4MATIC
approx. 0.62 US qt (0.59 l)
MB Automatic Transmission Oil
1
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
Brake system
0.5 US qt (0.5 l)
MB Brake Fluid (DOT 4+)
Cooling system
approx. 6.8 US qt (6.4 l)
MB 325.0 Anticorrosion/Antifreeze Agent
S203 MY03_A.book Page 328 Tuesday, January 28, 2003 2:22 PM

330 Technical dataFuels, coolants, lubricants etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, use
only engine oils recommended by
Mercedes-Benz. Information on recom-
mended brands is available in the Factory
Approved Service Products pamphlet, or at
your authorized Mercedes-Benz Center.
Please follow FSS recommendations for
scheduled oil changes. Failure to do so
could result in engine damage not covered
by the Mercedes-Benz Limited Warranty.
Engine oil additives
Do not blend oil additives with engine oil.
They may be harmful to the engine opera-
tion.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil is used in the air conditio-
ning system.
Never use R-12 (CFC) or mineral-based lu-
bricating oil, otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere. Under extremely strenu-
ous operating conditions, this moisture
content can lead to the formation of bub-
bles in the system, thus reducing the sys-
tem’s efficiency.
Therefore, the brake fluid must be re-
placed every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your au-
thorized Mercedes-Benz Center will pro-
vide you with additional information.
S203 MY03_A.book Page 330 Tuesday, January 28, 2003 2:22 PM