2004 MERCEDES-BENZ C240 4MATIC WAGON light

321 Practical hints
Flat tire
Mounting the new wheel
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel or other
steel rims (located in vehicle tool kit)
Clean contact surfaces of wheel and
wheel hub.

Guide Minispare wheel onto alignment
bolt and push it on.

Insert wheel bolts and tighten them
slightly.
!Wheel bolts2 must be used when
mounting the Minispare wheel or other
steel rims. The use of any wheel bolts
other than wheel bolts2 for the
Minispare wheel or other steel rims will
physically damage the vehicle’s
brakes.
!To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt.Warning!
G
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized 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.

322 Practical hintsFlat tire
Unscrew the alignment bolt, install last
wheel bolt and tighten slightly.Lowering the vehicle

Lower vehicle by turning crank
counterclockwise until vehicle is
resting fully on its own weight.

Remove the jack.
1 - 5Wheel bolts

Tighten the five wheel bolts evenly,
following the diagonal sequence
illustrated (1to5), until all bolts are
tight. Observe a tightening torque
of 80 lb-ft (110 Nm).Before storing the jack, it should be fully
collapsed, with handle folded in (storage
position) (
page 301).

Store the jack and the other vehicle
tools in the storage compartment be-
hind the left trim panel (
page 301).

Store the wheel cover (Canada only)
and the damaged wheel in the cargo
compartment.
Warning!
G
Only use genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could tip over.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque
of 80 lb-ft (110 Nm).

328 Practical hintsJump startingThe battery is located in the engine
compartment on the right hand side. The
terminals for jump starting are located in
front of the battery.
Make sure the two vehicles do not
touch.

Turn off all electrical consumers.

Apply parking brake.

Shift gear selector lever to positionP.1Positive terminal of charged battery
2Positive under hood terminal in front of
discharged battery
3Negative terminal of charged battery
4Negative under hood terminal in front
of discharged battery

Connect positive terminal1 of the
charged battery with positive under
hood terminal2 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery1 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminal3 of the
charged battery with negative under
hood terminal4 in front of the
discharged battery with the jumper
cables. Clamp cable to charged
battery3 first.

Start the engine of the disabled
vehicle.
You can now again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.

Remove the jumper cables first from
negative terminals3 and4 and then
from positive terminals1 and2.
You can now turn on the lights.

Have the battery checked at the near-
est authorized Mercedes-Benz Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 258).
!Do not tow-start the vehicle.

342 Technical dataRims and TiresSame size tiresMinispare wheelModel
C240
C2404MATIC
C320
C3204MATIC
Rims (light alloy)
7 J x16 H2
7 J x16 H2
Rims (steel – Canada only)
7 J x16 H2
-
Wheel offset
1.46 in (37 mm)
1.46 in (37 mm)
Summer tires (radial-ply tires)
225/50 R16 91H
225/50 R16 91H
All-season tires (radial-ply tires)
205/55 R16 91H
205/55 R16 91H
Winter tires (radial-ply tires)
205/55 R16 91H M+S
205/55 R16 91H M+S
Rim (steel)
3.5 B x16 H2
Wheel offset
0.67 in (17 mm)
Tire
T 125/90 R16 98M
1
1Must not be used with snow chains.

349 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasoline
Fuel requirements
Only use Premium unleaded meeting
ASTM standard D 439:

The octane number (posted at the
p u m p ) m u s t b e 9 1 m i n . I t i s a n a v e r a g e
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M)/2). This is also known as the
ANTI-KNOCK INDEX.Unleaded gasoline containing oxygenates
such as Ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not
exceed 10%; MTBE must not exceed 15%.
The ratio of Methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of Ethanol and Methanol is
not allowed. Gasohol, which contains 10%
Ethanol and 90% unleaded gasoline, can
be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
!To maintain the engine’s durability and
performance, premium unleaded gaso-
l i n e m u s t b e u s e d . I f p r e m i u m u n l e a d e d
is not available and low octane fuel is
used, follow these precautions:

Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.


Avoid full throttle driving and abrupt
acceleration.


Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded
with a light load such as two
persons and no luggage.


Do not exceed
2/3 of maximum
accelerator pedal position if the
vehicle is fully loaded or operating
in mountainous terrain.
iFlexible Fuel Vehicles (identified by a
label reading Premium gasoline or
E85 only! are designed to operate on
premium unleaded gasoline or Ethanol
fuel (E85) or any mixture of these two.
See notes on Flexible Fuel Vehicles
(page 350).

357 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
TM1
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is
installed on the front passenger seat.
The system will automatically deacti-
vate the passenger front airbag when
such a seat is properly installed
(PASS. AIRBAG OFF indicator lamp
located in the center console comes
on). 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
passenger front airbag if a
BabySmartTM compatible child seat is
installed.
BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking
situations. 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
intense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service
center, which can help you with any
questions about your vehicle and
provide assistance in the event of a
breakdown.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control
vehicle functions such as door locking
or windshield wiping depending on
vehicle settings and/or ambient
conditions.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the
passenger compartment needed for
vehicle operation and monitoring.
1BabySmart
TM is a trademark of Siemens
Automotive Corp.

365 Index
Operating safety 169
Operation 172
Radio operation 175
Switching off 172
Switching on 172
Telephone operation 189
Automatic antiglare
for rear view mirror 146
Automatic central locking
Activating/deactivating
(control system) 131
Automatic climate control* 158
Activating 159
Adjusting air distribution 162
Adjusting air volume 162
Air recirculation mode 163
Deactivating 159
Defrosting 163
Rear window defroster 149
Residual heat utilization 167
Residual ventilation 167
Setting the temperature 161Automatic headlamp mode 101
Automatic lighting control
Activating 105
Deactivating 105
Automatic locking when driving 88
Automatic transmission 139
Accelerator position 144
Comfort program mode 143
Emergency operation
(Limp Home Mode) 144
Fluid level 256
Gear ranges 141
Gear selector lever position 139, 142
Gear shifting malfunctions 144
Kickdown 144
Manual shifting 140
One-touch gearshifting 140
Program mode selector switch 143
Starting with 43
Transmission fluid 256
Auxiliary fuse box 334B
BabySmart
TM
Airbag deactivation system 68
Compatible child seats 68
Self-test 68
BabySmart
TM airbag
deactivation system 357
BabySmartTM compatible
child seats 357
Backrest
Folding forward 211
Folding rearward 212
Backrest tilt 33
Backup lamps 311, 316
Bulbs 311
BAS 75, 357
Messages in display 281
Batteries, SmartKey
Changing 306
Check lamp 85
Checking 86

366 IndexBattery discharged
Jump starting 327
Battery, vehicle 258, 324
Charging 325
Disconnecting 325
Messages in display 285
Reconnecting 326
Reinstalling 325
Removing 325
Bi-Xenon headlamps* 357
Bi-Xenon type
Front lamp bulbs 313
Block heater 264
Blocking
Rear door window operation 72
Bolts
For Minispare wheel 304
Brake assist system (BAS) 357
Brake fluid 251, 348Brake lamp bulbs 311
Brake lamp, high mounted 311
Brake pads
Message in display 286
Brakes 240
Warning lamp 275
Break-in period 238
Bulbs, replacing 310
Additional turn signals 310
Backup lamps 311
Brake lamps 311
Fog lamps 310
Front lamps 310
High beam 310
High mounted brake lamp 311
License plate lamps 311, 316
Low beam 310
Parking lamps 310, 311, 313, 314
Rear fog lamp 311
Rear fog lamps 315Side marker lamps 310, 315
Standing lamps 310, 311, 313, 314
Tail lamp assemblies 311, 315
Turn signal lamps 310, 311
Button
Audio system 172
C
CAC (Customer assistance center) 357
California
Important notice 11
Calling up
Range (distance to empty) 136
Service indicator 266
CAN system 357
Capacities
Fuels, coolants, lubricants, etc. 346
Cargo area see Cargo compartment
Cargo compartment
Auxiliary fuse box 334
Lighting 106
Parcel net 208