engine coolant MERCEDES-BENZ C CLASS COUPE 2003 Owner's Manual

320 Technical dataFuels, coolants, lubricants etc.Premium unleaded gasoline
Fuel requirements
Use only premium unleaded meeting
ASTM standard D 439:

The octane number (posted at the
pu mp ) m us t b e 91 mi n. It is an a ve ra ge
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 not to 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-
line must be used. If premium unleaded
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
3000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage.


Do not exceed
2/3 of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.

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.

322 Technical dataFuels, coolants, lubricants etc.Coolant system design and coolant used
stipulate the replacement interval. The
above replacement interval is only applica-
ble if MB 325.0 anticorrosion/antifreeze
solution or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.
To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. - 22°F [-30°C]). If
you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion 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 that the mix-
ture is in accordance with label instruc-
tions.
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, con-
sult your authorized Mercedes-Benz
Center.
Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum
parts. (Failure to use such anticorro-
sion/antifreeze coolant will result in a sig-
nificantly shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 Anticorrosion/Anti-
freeze agent.
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to your authorized Mercedes-Benz
Center for service.

324 Technical dataFuels, coolants, lubricants etc.Windshield and headlamp washer 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.

6.4 US qt (6.0 l) in vehicles with head-
lamp cleaning system*


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

Refill the reservoir with MB Windshield
Washer Concentrate and water (or con-
centrate and commercially available
premixed windshield washer sol-
vent/antifreeze, depending on ambient
temperatures).Windshield and headlamp 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 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 liters) solvent].
Warning!
G
Washer solvent/antifreeze is highly flamma-
ble. Do not spill washer solvent/antifreeze
on hot engine parts, because it may burn.
You can be seriously burned.

333
Index
A
ABS 23, 73, 327
ABS control 74
Malfunction indicator lamp 247
Messages in display 253
Warning lamp 247
Accelerator position, automatic transmis- sion 137
Accident In case of 50
Activating Air conditioning (cooling) 148, 157
Air recirculation mode 146, 154
Anti-theft alarm system 78
Automatic climate control 151
Central locking (control system) 122
Climate control 143
Defrost 146, 154
Easy-entry/exit feature 123
ESP 77
Exterior headlamps 47
Exterior lamps 97
Hazard warning flasher 99
Headlamps 47
High beams 99
Ignition 31 Immobilizer 53, 78
Rear fog lamp 97
Rear window defroster 147, 156
Residual heat 158
Seat heater* 92
Tow-away alarm 79
Windshield wipers 48
Adding Coolant 230
Engine oil 228
Additional turn signals 280
Adjustable air outlets, rear passenger com- partment 149, 158
Adjusting 32 Air distribution 145, 153
Air volume 145, 153
Backrest tilt 33, 35
Exterior rear view mirror 40
Head restraint height 33, 35, 37
Head restraint tilt 34, 35
Head restraints 37
Inside rear view mirror 39
Instrument cluster illumination 102
Manual seat 33
Mirrors 39
Rear seat head restraints 36 Seat cushion tilt 33, 35
Seat fore and aft adjustment 33, 34
Seat height 33, 35
Seats 32
Steering column height 39
Steering column length 39
Steering wheel 37
Air conditioner (cooling) Turning off 148, 157
Turning on 148, 157
Air conditioner refrigerant 319
Air distribution Adjusting 145, 153
Air outlets, rear passenger compartment Adjustable 149, 158
Air pressure see Tire inflation pressure 234
Air recirculation mode 146, 154 Activating 146, 154
Deactivating 147, 155
Air volume Adjusting 145, 153
AIRBAG OFF indicator lamp 251
Airbags 57 BabySmart
TM airbag deactivation
system 327
BabySmartTM deactivation system 67

336 IndexCassette playerOperating 112
Catalytic converter 222
CD changer* 172
CD mode 172
CD player Operating 111
Center console 25 AIRBAG OFF indicator lamp 251
Centigrade Setting temperature units 117
Central locking From inside 87
Switch 87
Switching on/off (control system) 122
Unlocking from inside 87
Central locking switch 87
Certification label 308
Changing Batteries (SmartKey) 276
Key setting 123
Changing CDs 172
Charcoal filter 156
Charging Vehicle battery 295 CHECK ENGINE malfunction indicator
lamp 250
Checking Coolant level 225, 229
Oil level 225, 227
Tire inflate pressure 225
Vehicle lighting 225
Child safety 65 Airbags 58
Infant and child restraint systems 62, 65
LATCH child seat mounts 70
Child seat mounts see LATCH child seat mounts 70
Cigarette lighter 199
Cleaning Cup holder 243
Gear selector lever 243
Hard plastic trim items 244
Headlamps 140
Headliner 244
Instrument cluster 243
Leather upholstery 244
Light alloy wheels 243
MB Tex upholstery 244
Plastic and rubber parts 244 Seat belts 244
Steering wheel 243
Windows 243
Windshield 49
Wiper blades 243
Climate control 142 Adjusting 145
Defogging windshield 145
Defrosting 146
Rear window defroster 147
Setting the temperature 145
Clock 23, 116
Closing Glove box 195
Hood 227
Side windows 182
Sliding/pop-up roof 186, 278
Sliding/pop-up roof with SmartKey 187
Sunshades for the sliding/pop-up roof 185
Trunk lid 86
Windows 182
Windows with SmartKey 183
Closing sliding/pop-up roof
In an emergency 278

337
Index
Cockpit 20, 327
Cockpit management and data system
(COMAND*) 328
Collapsible tire 328
COMAND* 328
COMAND* see separate operating instructions
Combination switch 99 High beam flasher 48, 99
Turn signals 47
Windshield wipers 48
Consumer information 325
Control and operation of radio transmitters 222
Control system 105, 328 AUDIO menu 110
Convenience submenu 123
Display digital speedometer 110
Functions 106, 109
Instrument cluster submenu 116
Lighting submenu 119
Malfunction memory menu 112
Menus 108, 109, 329
Multifunction display 105
Multifunction steering wheel 106
NAV menu 112 Selecting radio system 111
Settings menu 114
Standard display menu 110
Submenus 107, 109
TEL* menu 126
Trip computer menu 125
Vehicle submenu 122
Convenience submenu 123 Activating easy-entry/exit feature 123
Setting key dependency 124
Setting parking position for exterior rear view mirror 124
Coolant 229, 321 Adding 230
Anticorrosion/antifreeze quantity 322
Capacities 317
Checking level 229
Messages in display 257, 258
Temperature 223
Temperature gauge 102
Warning lamp 258
Coolant level Checking 225, 229
Cruise control 189, 328 Canceling 190
Driving downhill 190 Driving uphill 190
Fine adjustment 191
Saving current speed 190
Setting speeds 191
Cruise control lever 189
Cup holder Cleaning 243
In front seat armrest 196
Customer Assistance Center (CAC) 327
D
Daytime running lamp mode 98 Setting 119
Deactivating Air conditioning (cooling) 148
Air recirculation mode 147, 155
Alarm 79
Anti-theft alarm system 79
Automatic climate control 151
Central locking (control system) 122
Climate control 143
Cruise control 190
Defrost 146, 154
Engine with the key 53
ESP 76
Exterior lamps 97
Exterior lamps delayed shut-off 120

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

342 IndexInflatingSpare tire 292
Information Button for Tele Aid* 206
Inside rear view mirror Adjusting 39
Antiglare 138
Installing Infant and child restraint systems 69
Towing eye bolt 302
Wiper blades 287
Instrument cluster 22, 102, 329 Cleaning 243
Coolant temperature gauge 102
Illumination 102
Lamps in 246–250
Multifunction display 105
Outside temperature indicator 104
Selecting language 118
Instruments and controls see Cockpit 20
Integrated remote control Canadian programming 211
Erasing memory 212
Hand-held transmitter 210
Operating 212
Rolling code programming 211 Interior lighting 100
Activating automatic control 100
Deactivating automatic control 100
Delayed shut-off 121
Manual operation 100
Interior storage spaces 195 Armrest 197
Cup holder 196
Glove box 195
Parcel net in front passenger footwell 198
Storage compartment in front of arm- rest 196
J
Jack 272
Jump starting 297
K
Key dependency memory Settings 124
Key positions in starter switch 31
Key, mechanical 274, 275
Key, SmartKey Battery check lamp 83
Changing the batteries 276
Checking the batteries 84 Factory setting 83
Global locking 83
Global unlocking 83
Loss of 84
Positions in starter switch 31
Remote controls 82
Restoring to factory setting 83
Selective setting 83
Starting the engine 45
Turning off the engine 53
Unlocking with 30
Keys 82
Kickdown 137, 329
Kilometers/miles in speedometer 117
Km/h or mph in speedometer 117
L
Labels, identification 308
Lamp bulbs, exterior 280
Lamps, exterior Front 280
Light sensor 263
Messages in display 264–267
Rear 281

343
Index
Lamps, indicator and warning
ABS 247
Airbag Off 61
Battery (SmartKey) 83
Brakes 249
CHECK ENGINE 250
Coolant 257
Engine diagnostics 250
ESP 246
Fuel reserve 250
Instrument cluster 246–250
Seat belts 250
Service indicator 238
SRS 57
Turn signals 23
Language Multifunction display 118
Setting 118
LATCH child seat mounts 70 Folding back 70
Layout of poly-V-belt drive 309
Leather upholstery Cleaning 244
License plate lamps Messages in display 266
Replacing bulbs 281, 286 Light alloy wheels
Cleaning 243
Technical data 311
Light sensor 263
Lighter see Cigarette lighter 199
Lighting 96 Automatic headlamp mode 97
Combination switch 99
Daytime running lamp mode 98
Exterior lamp switch 96
Front fog lamps 98
High beam flasher 99
High beams 99
Instrument cluster illumination 102
Interior 100
Locator lighting 98
Low beam 96
Manual headlamp mode 97
Night security illumination 98
Parking lamps 96
Rear fog lamp 98
Settings (control system) 119
Trunk 101
Limiting the gear range 134
Limp Home Mode 137 Loading 192
Instructions 194
Roof rack 192
Split rear bench seat 192
Locator lighting 98 Setting 120
Lock button 329
Lock buttons 329
Locking 51, 82 Fuel filler flap 224
Global, SmartKey 83
Vehicle in an emergency 275
Loss of keys 84
Loss of Service and Warranty Information Booklet 307
Low beam headlamps Messages in display 264
Replacing bulbs 280, 282
Lowering Vehicle 291
Lubricants Technical data 317
Luggage cover 192
M
Main dimensions 315
Maintenance 238