fuel additives MERCEDES-BENZ C320 2004 W203 Owner's Manual

ContentsTechnical data.................................. 335
Spare parts service ............................ 336
Warranty coverage ............................. 337
Loss of Service and Warranty
Information Booklet...................... 337
Identification labels............................ 338
Layout of poly-V-belt drive ................. 339
C 230 Kompressor Sport.............. 339
C 240/C 320 (all models) ............ 339
C 32 AMG..................................... 339
Engine ................................................ 340
Rims and Tires ................................... 342
Same size tires ............................. 343
Mixed size tires ............................ 344
Minispare wheel ........................... 345
Electrical system................................ 346
Main dimensions................................ 347
Weights .............................................. 348Fuels, coolants, lubricants, etc. ......... 349
Capacities .................................... 349
Engine oils.................................... 352
Engine oil additives ...................... 352
Air conditioning refrigerant .......... 352
Brake fluid .................................... 352
Premium unleaded gasoline ......... 353
Fuel requirements ........................ 353
Gasoline additives ........................ 354
Flexible Fuel Vehicles ................... 354
Coolants....................................... 356
Windshield washer and headlamp
cleaning* system ......................... 358
Consumer information ....................... 359
Uniform tire quality grading ......... 359
Technical terms............................... 361Index................................................. 367

352 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 255) 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.

354 Technical dataFuels, coolants, lubricants, etc.Gasoline additives
A major concern among engine
manufacturers is carbon build-up caused
by gasoline. Mercedes-Benz recommends
only the use of quality gasoline containing
additives that prevent the build up of
carbon deposits.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to
engine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power loss
Do not blend any specific fuel additives
with fuel. This only results in unnecessary
cost and may be harmful to engine
operation.Damage or malfunctions resulting from
poor fuel quality or from blending specific
fuel additives are not covered by the
Mercedes-Benz Limited Warranty.
Flexible Fuel Vehicles
Flexible Fuel Vehicles are identified by a
label reading Premium gasoline or E85
only! on fuel filler flap.
These vehicles are designed to operate on
premium unleaded gasoline or Ethanol
fuel (E85), or on any mixture of these two.
Ethanol fuel (E85) is a mixture of
approximately 85% Ethanol and 15%
unleaded gasoline.Switching fuels
For best performance and driveability it is
recommended to use either one or the
other fuel. A refueling pattern that
alternates between the two different fuels
should be avoided if possible.
Warning!
G
Ethanol fuel (E85) and its fumes 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 fueling. Never
smoke or create sparks close to Ethanol.

378 IndexFSS 265, 362
Fuel 250
Additives 354
Cruising range 355
E85 (Ethanol fuel) 355
Fuel reserve warning lamp 278
Gasoline additives 354
Message in display 293
Premium unleaded
gasoline 250, 350, 353
Requirements 353, 354
Reserve warning 23
Switching (Flexible Fuel Vehicle) 354
Technical data 350
Fuel additives 354
Fuel cap
Message in display 293
Fuel consumption statistics
After start 137
Since last reset 137Fuel filler flap 249
Locking 249
Opening in an emergency 308
Unlocking 249
Fuel requirements 353
For ethanol fuel 354
Fuel reserve tank
Message in display 293
Fuel tank
Capacity 350
Filler flap 249
Fuels, coolants, lubricants etc.
Capacities 349
Functions (control system) 114, 117
Resetting 124
Fuse box
Auxiliary in trunk 334
In engine compartment 333
In passenger compartment 332Fuse chart 332
Fuse extractor 334
Fuses 332
Auxiliary fuse box in trunk 334
Fuse box in engine compartment 333
Fuse box in
passenger compartment 332
Fuse chart 332
Fuse extractor 334
Spare fuses 334
G
Garage door opener 27, 231
Gasoline additives 354
Gasoline see Fuel
Gear range 362
Automatic transmission* 144
Limiting 144
Shifting into optimal 143
Gear range limit
Canceling 143

393 Index
Technical data
Air conditioning refrigerant 352
Brake fluid 352
Coolant 350
Coolants 356
Electrical system 346
Engine oil additives 352
Engine oils 352
Flexible fuel vehicles 354
Fuel requirements 353
Fuels 350
Gasoline additives 354
Lubricants 349
Main dimensions 347
Premium unleaded gasoline 353
Rims and tires 342
Weights 348
Windshield washer 351
Windshield washer and headlamp
cleaning* system 351, 358Tele Aid* 223
Emergency calls 224
Information 227
Initiating an emergency call
manually 226
Message in display 299
Remote door unlock 230
Roadside assistance 226
SOS button 226
Stolen vehicle tracking services 230
System self-check 224
Tele Aid System 223, 365
Upgrade signals 229
Telematics* 365
Telephone* 24, 222
Answering a call 139
Dialing a number from
the phone book 140
Emergency call 198
Ending a call 139
Hands-free microphone 27Loading phone book 140
Message in display 299
Operation 138, 193
Redialing 140
Signal strength 139
Temperature
Display mode 127
Grades of tires 360
Setting interior temperature
Automatic climate control* 165
Climate control 156
Setting units in display 127
Tires 262
Tightening torque
(Wheel bolts) 321, 365
Tilt
Head restraint
Manual seat 34
Power seat* 36
Time
Setting hours 126
Setting minutes 126