2003 MERCEDES-BENZ C CLASS COUPE fuel additives

Contents
Technical data................................. 305
Spare parts service ............................ 306
Warranty coverage ............................. 307 Loss of Service and Warranty
Information Booklet ..................... 307
Identification labels ........................... 308 Certification label ......................... 308
Vehicle Identification Number
(VIN) ............................................. 308
Identification labels and numbers 308
Layout of poly-V-belt drive ................. 309 C 230 Kompressor ....................... 309
C 320 ........................................... 309
Engine ................................................ 310
Rims and Tires ................................... 311 Same size tires ............................. 311
Mixed size tires ............................ 312
Spare wheel ................................. 313 Electrical system ................................ 314
Main Dimensions ................................ 315
Weights .............................................. 316
Fuels, coolants, lubricants etc. .......... 317
Capacities ..................................... 317
Engine oils .................................... 319
Engine oil additives ....................... 319
Air conditioning refrigerant .......... 319
Brake fluid .................................... 319
Premium unleaded gasoline ......... 320
Fuel requirements ........................ 320
Gasoline additives ........................ 321
Coolants ...................................... 321
Windshield and headlamp
washer system ............................. 324
Consumer information ....................... 325 Uniform tire quality grading ......... 325
Technical terms ...............................327Index .................................................333

319
Technical data
Fuels, 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 condition-
ing 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.

321
Technical data
Fuels, coolants, lubricants etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build up of carbon depos-
its.
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 en-
gine 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 opera-
tion.
Damage or malfunctions resulting from
poor fuel quality or from blending specific
fuel additives are not covered by the
Mercedes-Benz Limited Warranty.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which pro-
vides:

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 corro-
sion protection.
If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).
The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil over pro-
tection. You should have it replaced every
15 years or 150 000 miles (250 000 km),
whichever comes first.

340 IndexFlexible Service System (FSS) 238, 328
Fog lamp, rear 98, 281
Fog lampsReplacing bulbs 280
Fog lamps, front Messages in display 266
Replacing bulbs 281
Switching on 98
Front airbags 61
Front lamps Bi-Xenon type 283
Halogen-type 282
Messages in display 264–267
Replacing bulbs 280, 282
Switching on 96
Front seat backrest Folding backrest back 36
Folding backrest forward 35
Front seat head restraints Installing 90
Manual seat 90
Power seat* 90
Removing 90
Front seats Heater 91
FSS (Flexible Service System) 238, 328 Fuel 225
Additives 321
Fuel reserve warning lamp 250
Gasoline additives 321
Premium unleaded gasoline 225, 318, 320
Requirements 320
Reserve warning 23
Technical data 317
Fuel additives 321
Fuel consumption statistics After start 125
Since last reset 125
Fuel filler flap 224 Locking 224
Opening 277
Unlocking 224
Fuel requirements 320
Fuel reserve tank Message in display 263
Fuel tank Capacity 318
Filler flap 224
Fuels, coolants, lubricants etc. Capacities 317 Functions (control system) 106, 109
Resetting 115
Fuse box 303
Fuse chart 303
Fuse extractor 304
Fuses 303 Auxiliary fuse box in trunk 304
Fuse box in engine compartment 303
Fuse box in passenger compartment 303
Fuse chart 303
Fuse extractor 304
G
Garage door opener 26, 209 Erasing in remote control 212
Integrated remote control 210
Rolling code programming 211
Gasoline see Fuel 225 Gasoline additives 321
Gear range 328 Automatic transmission 134
Limiting 134
Shifting into optimal 133
Gear range limit
Canceling 133

351
Index
Resetting functions in
Control system 115
Selecting 114
Settings menu 114
Vehicle 122
Sun visors 141
Sunshades for the sliding/pop-up roof Closing 185
Opening 185
Stopping 185
Supplemental Restraint System (SRS) 331
Switching off Audio system 162
Automatic central locking (control system) 122
Delayed (exterior lamps) 120
Engine 52
ESP 76
Hazard warning flasher 99
Headlamps 52
Seat heating 92
Switching on Audio system 162
Automatic central locking (control system) 122
ESP 77 Front fog lamps 98
Hazard warning flasher 99
Headlamps 47
High beams 99
Rapid seat heating 92
Rear fog lamp 98
Seat heating* 92
Windshield wipers 48
Synchronizing Sliding/pop-up roof 188, 279
T
Tachometer 23, 103 Displaying gear range 134
Overspeed range 103
Tail lamps Cleaning 242
Replacing bulbs 281, 285
Tailgate Message in display 269
Tar stains 241
Technical data 319 Brake fluid 319
Coolant 317
Coolants 321
Electrical system 314
Engine 310 Engine oil 319
Engine oil additives 319
Fuel requirements 320
Fuels 317
Gasoline additives 321
Lubricants 317
Main dimensions 315
Premium unleaded gasoline 320
Rims and tires 311
Weights 316
Windshield and headlamp washer
system 318, 324
Tele Aid Information 206
Initiating an emergency call manually 204
Messages in display 269
Roadside assistance 204
Tele Aid System 201
Tele Aid System 331
Tele Aid* 201 Emergency calls 202
Remote door unlock 208
Stolen vehicle tracking services 209
System self-check 202
Upgrade signals 207