2004 MERCEDES-BENZ C320 4MATIC WAGON fuel cap

348 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, only
use engine oils approved by
Mercedes-Benz. Information on approved
engine oils 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 damage the engine.
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
conditioning system.Never use R-12 (CFC) or mineral-based
lubricating 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
bubbles in the system, thus reducing the
system’s efficiency.
Therefore, the brake fluid must be
replaced every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Center will
provide you with additional information.
!Always check the oil filler cap
(page 256) for important information
pertaining to the engine oil needing to
meet a specific Mercedes-Benz specifi-
cation (e.g. MB 229.5). If such informa-
tion is printed on the oil filler cap, only
use an engine oil from the list of ap-
proved engine oils in the Factory Ap-
proved Service Products pamphlet that
meets the specification indicated on
the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.

352 Technical dataFuels, coolants, lubricants, etc.Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which
provides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and
corrosion protection.
If the antifreeze mixture is effective
to -22°F (-30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approx. 266°F (130°C).The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over
protection. Refer to Service Booklet for
replacement interval.
Coolant system design and coolant used
stipulate the replacement interval. The
replacement interval published in the Ser-
vice Booklet is only applicable if MB 325.0
anticorrosion/antifreeze solution or other
Mercedes-Benz approved products of
equal specification (see Factory Approved
Service Products pamphlet) are used to re-
new the coolant concentration or bring it
back up to the proper level.
To provide important corrosion protection,
the solution must be at least 45%
anticorrosion/antifreeze [equivalent to
freeze protection to approx. - 22°F
(-30°C)]. If you use a solution that is more than 55%
anticorrosion/antifreeze [freeze
protection to approx. - 49°F (-45°C)], the
engine temperature will increase due to
the lower heat transfer capability of the
solution. Therefore, do not use more than
this amount of anticorrosion/antifreeze.
If the coolant level is low, water and
MB 325.0 anticorrosion/antifreeze should
be used to bring it up to the proper level
(have cooling system checked for signs of
leakage). Please make sure the mixture is
in accordance with label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality,
consult your authorized Mercedes-Benz
Center.

354 Technical dataFuels, coolants, lubricants, etc.Windshield washer and headlamp cleaning* system
Both the windshield and headlamp washer
systems are supplied from the windshield
washer fluid reservoir.
The washer fluid reservoir has a capacity of
approx.:

3.2 US qt (3.0 l) in vehicles without
headlamp cleaning system*


6.4 US qt (6.0 l) in vehicles with
headlamp cleaning system*

Refill the reservoir with MB Windshield
Washer Concentrate and water
(or concentrate and commercially
available premixed windshield washer
solvent/antifreeze, depending on
ambient temperatures).Washer fluid mixing ratio
For temperatures above freezing, use
MB Windshield Washer Concentrate “S”
and water:


1 part “S” to 100 parts water
[40 ml “S” to 1 gallon (4.0 liters) water].
For temperatures below freezing, use
MB Windshield Washer Concentrate “S”
and commercially available premixed
windshield washer solvent/antifreeze:


1 part “S” to 100 parts solvent
[40 ml “S” to 1 gallon (4.0 liters) solvent].
Warning!
G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts, because it may ignite
and burn. You could be seriously burned.

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

369 Index
Coolant 257, 352
Adding 257
Anticorrosion/antifreeze
quantity 352
Capacities 346
Checking level 257
Messages in display 287, 288
Temperature 248
Temperature gauge 108
Warning lamp 288
Coolant level
Checking 257
Cruise control 202, 358
Canceling 203
Driving downhill 203
Driving uphill 203
Fine adjustment 204
Saving current speed 203
Setting speeds 204
Cruise control lever 202
Cruising range, fuel 351Cup holder
Cleaning 271
In front seat armrest 216
In rear seat armrest 217
Customer assistance system (CAC) 357
D
Daytime running lamp mode 102
Setting 127, 128
Deactivating
Air conditioning 156
Air recirculation mode 155, 164
Alarm 81
Anti-theft alarm system 81
Automatic climate control* 159
Central locking (control system) 131
Charcoal filter 165
Climate control 151
Climate control system 155
Cruise control 203
Defrosting 154, 163ESP 77
Exterior lamps 101
Exterior lamps delayed shut-off 129
Front fog lamps 129
Hazard warning flasher 104
Headlamps 52
Immobilizer 80
Interior lighting delayed shut-off 130
Rapid seat heater* 96
Rear window defroster 149
Seat heater* 96
Tow-away alarm 82
Deep water see Standing water
Defogging
Windshield 153, 162
Defrosting 154, 163
Delayed shut-off
Exterior lamps 129
Interior lighting 130
Dialing
A number (telephone) 138

373 Index
Fuel filler flap 249
Locking 249
Opening 308
Unlocking 249
Fuel requirements 349
Fuel reserve tank
Message in display 293
Fuel tank
Capacity 347
Filler flap 249
Fuels, coolants, lubricants etc.
Capacities 346
Functions (control system) 112, 115
Resetting 122
Fuse box 333
Fuse chart 333
Fuse extractor 334
Fuses 333
Auxiliary fuse box in
cargo compartment 334
Fuse box in engine compartment 333Fuse box in
passenger compartment 333
Fuse chart 333
Fuse extractor 334
Spare fuses 334
G
Garage door opener 27, 230
Gasoline see Fuel
Gasoline additives
Gear range 358
Automatic transmission 141
Limiting 141
Shifting into optimal 140
Gear range limit
Canceling 140
Gear selector lever 23
Cleaning 271
Lock 43
Position 142
Position
(automatic transmission) 23, 139Global
Locking 85
Unlocking 85
Global positioning system (GPS) 358
Glove box 21, 215
Closing 215
Opening 215
Good visibility 145
GPS 358
GPS see COMAND*
H
Halogen-type
Front lamp bulbs 312
Hands-free microphone 27
Hard plastic trim items
Cleaning 271
Hazard warning flasher 104
Switching off 104
Switching on 104