Fuel type MERCEDES-BENZ C240 2005 W203 Owner's Manual

273 Operation
Driving instructions
Catalytic converter
Your Mercedes-Benz is equipped with
monolithic-type catalytic converters, an
important element in conjunction with the
oxygen sensors to achieve substantial
control of the pollutants in the exhaust
emissions. Keep your vehicle in proper
operating condition by following our
recommended maintenance instructions
as outlined in your Maintenance Booklet.
Emission control
Certain systems of the engine serve to
keep the toxic components of the exhaust
gases within permissible limits required by
law.
These systems, of course, will function
properly only when maintained strictly
according to factory specifications. Any
adjustments on the engine should,
therefore, be carried out only by qualified
Mercedes-Benz Center authorized techni-
cians. Engine adjustments should not be
altered in any way. Moreover, the specified
service jobs must be carried out regularly
according to Mercedes-Benz servicing
requirements. For details refer to the
Maintenance Booklet.
!To prevent damage to the catalytic
converters, only use premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel
may reach the catalytic converter,
causing it to overheat and start a fire.
Warning!
G
As with any vehicle, do not idle, park or
operate this vehicle in areas where combus-
tible materials such as grass, hay or leaves
can come into contact with the hot exhaust
system, as these materials could be ignited
and cause a vehicle fire.

415 Index
F
Fahrenheit
Setting temperature units 135
Fastening the seat belts 43
Filler neck
C 230 Kompressor
(all models) 282
C 240 (all models), C 320 (all models),
C 55 AMG 282
Fine adjustment
Cruise control 233
First aid kit 329
Flat tire 353
Collapsible tire (C 55 AMG only) 334
Lowering the vehicle 359
Minispare wheel
(except C 55 AMG) 333
Mounting the spare wheel 353
Preparing the vehicle 353
Flexible fuel vehicles 392
At the gas station 275
Switching fuels 393
Flexible Service System see FSSFog lamp, rear
Message in display 325
Replacing bulb 345
Switching on 113
Fog lamps, front
Messages in display 323
Replacing bulbs 345
Switching on 112
Four wheel electronic traction
system (4MATIC) with ESP 82
4MATIC 82
Front air bags 63
Front fog lamps
Indicator lamp 109
Switching on 112
Front lamps
Bi-Xenon* type 349
Halogen-type 347
Messages in display 323–326
Replacing bulbs 345, 347
Switching on 109
Front passenger front air bag off
indicator lamp 27, 63, 70, 308Front seat head restraints
Installing, manual seat 100
Installing, power seat* 101
Manual seat 100
Power seat* 100
Removing, manual seat 100
Removing, power seat* 100
Front seats
Heating* 105
FSS (Flexible Service System)
(Canada vehicles) 292, 400
Fuel 276
Additives 392
Cruising range 393
E85 (Ethanol fuel) 393
Fuel reserve warning lamp 307
Gasoline additives 392
Premium unleaded
gasoline 276, 388, 391
Requirements 391, 392
Switching (Flexible Fuel Vehicle) 393
Technical data 387, 388
Fuel additives 392

419 Index
Key, SmartKey
Battery check lamp 89
Checking the batteries 91
Factory setting 89
Global locking 89
Global unlocking 89
Loss of 91
Messages in display 322
Positions in starter switch 33
Remote control 88
Restoring to factory setting 90
Selective setting 89
Starting the engine,
automatic transmission* 47
Starting the engine,
manual transmission 46
Turning off the engine 56
Unlocking the trunk lid 91
Unlocking with 32
Kickdown 163, 401
Kilometers/miles in speedometer 135
Km/h or mph in speedometer 135L
Labels, identification 376
Lamp bulbs, exterior 344
Lamp sensor
Message in display 324
Lamps, exterior
Front 345
Light sensor 324
Messages in display 323–326
Rear 345
Lamps, indicator and warning
ABS 25, 302
Battery (SmartKey) 89
Brakes 25, 303
Engine diagnostics 304, 307
Engine malfunction 25, 304–305
ESP 25, 306
Front fog lamps 109
Front passenger
front air bag off 27, 63, 70, 308
Fuel reserve 25, 307
High beam headlamps 25Instrument cluster 302–307
Low beam headlamps 25
Maintenance service indicator 292
Rear fog lamp 109
Seat belt telltale 25, 307
SRS 25, 59, 307
Turn signals 25
Language
Multifunction display 136
Setting 136
LATCH-type child seat anchors 73
Folding back 74
Layout of poly-V-belt drive 377
Leather upholstery
Cleaning 299
Lever for voice control system* 23
License plate lamps
Messages in display 324
Replacing bulbs 345
Light alloy wheels
Cleaning 298
Technical data 381, 382

420 IndexLight sensor 324
Lighter see Cigarette lighter
Lighting 109
Automatic headlamp mode 110
Combination switch 113
Daytime running lamp mode 111
Door entry lamps 116
Exterior lamp switch 109
Front fog lamps 112
High beams 113
Instrument cluster illumination 117
Instruments 117
Interior 115
Locator lighting 112
Low beam 109
Manual headlamp mode 110
Night security illumination 112
Parking lamps 109
Rear fog lamp 113
Settings (control system) 141
Standing lamps 109
Trunk lamp 116Limiting the gear range 159
Limp Home Mode 167
Loading 234
Cargo tie-down rings* 240
Instructions 239
Roof rack* 234
Split rear bench seat* 237
Locator lighting 112
Setting 143
Lock button 401
Locking 54, 88
Automatic while driving 96
Centrally from inside 96
Fuel filler flap 275
Global, SmartKey 89
Glove box 241
Vehicle in an emergency 338
Loss of keys 91
Loss of Service and Warranty
Information Booklet 375
Low beam headlamps
Indicator lamp 25
Messages in display 324–325
Replacing bulbs 345, 347
Switching on 49Lowering
Vehicle 359
Lubricants
Technical data 387
M
Main dimensions 385
Main fuse box
In passenger compartment 370
Mainodometer 121
Maintenance 12, 292
Vehicles with E85 fuel 393
Maintenance service
Calling up the maintenance
service indicator 293
Major service (Service B) 292
Minor service (Service A) 292
Overdue 293
Types 293
When due 292
Maintenance service indicator 292
Calling up 293, 294
Clearing 293, 294
Maintenance System
(U.S. vehicles) 292, 401

422 Index
Automatic antiglare*
for rear view mirror 169
Exterior rear view mirror 41
Exterior rear view mirror
parking position* 148
Interior rear view mirror 41
Storing exterior rear view mirror
parking position* 108
MON 276, 401
Motor Octane Number see MON
Mph or km/h in speedometer 135
Multicontour seats* 104
Multifunction display 121, 401
Displaying gear range 159
Selecting language 136
Setting date (day) 140
Setting date (month) 139
Setting date (year) 141
Multifunction display messages
ABS 310
BAS 311
Brake fluid 315
Brake pads 315Coolant 316–318
Cruise control 319
Display 319
Doors 319
Engine oil 320–321
ESP 312–313
Fuel cap 305, 322
Hood 322
Key, SmartKey 322
Lamps, exterior 323–326
Oil 320–321
Parking brake 315
Restraint system 313
Seat belt system 327
SRS 313
Steering gear oil level 327
Tele Aid* 328
Telephone* 328
Tilt/sliding sunroof* 328
Trunk lid 328
Windshield washer fluid 328
Multifunction steering
wheel 26, 122, 401
Buttons 122N
Navigation system*
Operating 130
See separate COMAND*
operating instructions
Night security illumination 112
Setting 143
O
Occupant safety 58
Air bags 59
Children and air bags 60
Children in the vehicle 67
Fastening the seat belt 43
Infant and child restraint systems 67
LATCH-type child seat anchors 73
Seat belts 43, 62
Odometer, main 121
Oil
Adding 281
Oil level see Engine oil level
Oil see Engine oil

426 IndexRemote door unlock
With Tele Aid* 255
Removing
Ski sack* (Canada only) 237
Vehicle battery 361
Vehicle tool kit
(C 55 AMG only) 330
Vehicle tool kit
(except C 55 AMG) 329
Wheel 355
Wiper blades 352
Replacing
Backup lamp bulbs 351
Brake lamp bulbs 351
Bulbs 344
Fog lamp bulb, rear 351
Front lamp bulbs 345, 347
Fuses 369
High beam bulbs 348
High beam bulbs
(xenon-type* headlamps) 349
License plate lamp bulbs 351
Low beam bulbs 347
Parking lamp bulbs, front 348, 350Parking lamp bulbs, rear 351
Rear lamp bulbs 345, 351
Side marker lamp bulbs, front 350
Side marker lamp bulbs, rear 351
Standing lamp bulbs, front 348, 350
Standing lamp bulbs, rear 351
Tail lamp bulbs 351
Turn signal lamp bulbs,
front 348, 350
Turn signal lamp bulbs,
rear 351
Wiper blades 352
Reporting
Safety defects 18
Research Octane Number see RON
Reset button in the
instrument cluster 117, 132, 133
Resetting
All functions (control system) 132
All functions of a submenu 133
Fuel consumption 150
Maintenance service indicator 294
Trip odometer 119REST 402
Restraint system
Message in display 313
Restraint system see Infant and
child restraint systems
Reverse (manual transmission)
Shifting into 155
Rims 380
Roadside Assistance 12
RON 276, 402
Roof rack* 234
Rubber parts
Cleaning 300
S
Safety
Occupant 58
Safety belts see Seat belts
Safety defects
Reporting 18
Safety systems
Driving 77