engine coolant MERCEDES-BENZ C320 4MATIC WAGON 2004 S203 Owner's Guide

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.

353 Technical data
Fuels, coolants, lubricants, etc.
Anticorrosion/antifreeze
Your vehicle contains a number of
aluminum parts. The use of aluminum
components in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifi-
cally formulated to protect the aluminum
parts.Failure to use such anticorrosion/anti-
freeze coolant will result in a significantly
shortened service life.
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0
Anticorrosion/Antifreeze 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.
Anticorrosion/antifreeze quantityModel
Approx. freeze protection–35°F (–37°C)
–49°F (–45°C)
C 240/C 320 (all models)
3.4 US qt (3.2 l)
3.8 US qt (3.6 l)

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.

360 Technical termsPower train
Collective term designating all
components used to generate and
transmit motive power to the drive
axles, including


engine


clutch/torque converter


transmission


transfer case


drive shaft


differential


axle shafts/axles
Program mode selector switch
Used to switch the automatic trans-
mission between standard operationS
and comfort operationC.Remote Vehicle Diagnostics
Transmission of vehicle data and
current location to the Mercedes-Benz
Customer Assistance Center for
subscribers to Tele Aid service.
REST
(Residual engine heat utilization)
Feature that uses the engine heat
stored in the coolant to heat the
vehicle interior for a short time after
the engine has been turned off.
Restraint systems
Seat belts, belt tensioners, airbags and
child restraint systems. As inde-
pendent systems, their protective
functions complement one another.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired deto-
nation (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
Shift lock
When the vehicle is parked, this lock
prevents the transmission gear
selector lever from being moved out of
positionP without SmartKey turned
and brake pedal depressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning
device and airbags. Though indepen-
dent systems, they are closely inter-
faced to provide effective occupant
protection.

363 Index
A
ABS 23, 74, 357
Indicator lamp 274
Malfunction indicator lamp 274
Messages in display 284
ABS control 74
Accelerator position,
automatic transmission 144
Accident
In case of 50
Activating
Air conditioning (cooling) 156, 166
Air recirculation mode 154, 163
Anti-theft alarm system 80
Automatic climate control* 159
Central locking (control system) 131
Charcoal filter 165
Climate control 151
Climate control system 155
Defrosting 154, 163
Easy-entry/exit feature 132ESP 78
Exterior headlamps 46
Exterior lamps 101
Exterior rear view mirror parking
position 147
Hazard warning flasher 104
Headlamps 46
High beams 104
Ignition 31
Immobilizer 80
Rapid seat heater* 96
Rear fog lamp 102, 103
Rear window defroster 149
Residual heat 167
Seat heater* 96
Tow-away alarm 82
Windshield wipers 47
Adding
Coolant 257
Engine oil 256
Additional turn signals 310Adjustable air vents, rear passenger
compartment 157, 168
Adjusting 32
Air distribution 153, 162
Air volume 153, 162
Backrest tilt 33, 35
Exterior rear view mirror 38
Head restraint height 34, 35, 92
Head restraint tilt 34, 36, 93
Head restraints 93
Instrument cluster illumination 107
Interior rear view mirror 38
Manual seat 33
Mirrors 38
Multicontour seat* 95
Power seat* 35
Rear seat head restraints 92
Seat cushion depth 95
Seat cushion tilt 33, 35
Seat fore and aft adjustment 33, 35
Seat height 33, 35

367 Index
Storage compartment inside 209
Tailgate 87
Tie-down rings 214
Cargo tie-down rings 214
Cassette operation
Playing cassettes 182
Cassette player
Operating 119
Catalytic converter 246
CD changer* 185
CD operation 185
CD player
Operating 118
Center console 25
Lower part 26
PASS. AIRBAG OFF
indicator lamp 279
Upper part 25
Centigrade
Setting temperature units 125Central locking
Automatic 88
From inside 89
Switch 89
Switching on/off
(control system) 131
Unlocking from inside 89
Central locking switch 89
Certification label 338
Changing
Key setting 132
Changing CDs 185
Charcoal filter 165
Charging
Vehicle battery 325
CHECK ENGINE
malfunction indicator lamp 23, 276
Checking
Coolant level 257
Oil level 251, 254
Tire inflate pressure 251
Vehicle lighting 251Child safety 65
Airbags 58
Infant and child
restraint systems 62, 65
LATCH-type child seat anchors 71
Child safety switch see
Blocking of rear door window operation
Cigarette lighter 220
Cleaning
Cloth upholstery 272
Cup holder 271
Gear selector lever 271
Hard plastic trim items 271
Headlamps 145
Headliner and shelf
below rear window 271
Instrument cluster 270
Leather upholstery 271
Light alloy wheels 270
MB Tex upholstery 272
Plastic and rubber parts 272
Seat belts 271
Steering wheel 271

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

376 IndexL
Labels, identification 338
Lamp bulbs, exterior 310
Lamps, exterior
Front 310
Light sensor 294
Messages in display 293–296
Rear 311
Lamps, indicator and warning
ABS 274
Airbag Off 61
Battery (SmartKey) 85
Brakes 275
CHECK ENGINE 276
Coolant 287
Engine diagnostics 276, 278
ESP 277
Fuel reserve 278
Instrument cluster 274–278
Seat belts 278
Service indicator 265
SRS 57
Turn signals 23Language
Multifunction display 126
Setting 126
LATCH-type child seat anchors 71
Folding back 71
Layout of poly-V-belt drive 339
Leather upholstery
Cleaning 271
License plate lamps
Messages in display 294
Replacing bulbs 311, 316
Light alloy wheels
Cleaning 270
Technical data 342
Light sensor 294
Lighter see Cigarette lighter
Lighting 100
Automatic headlamp mode 101
Cargo compartment 106
Combination switch 104
Daytime running lamp mode 102
Door entry lamps 106
Exterior lamp switch 100Front fog lamps 102
High beam flasher 104
High beams 104
Instrument cluster illumination 107
Interior 105
Locator lighting 102
Low beam 100
Manual headlamp mode 101
Night security illumination 102
Parking lamps 100
Rear fog lamp 103
Settings (control system) 127
Limiting the gear range 141
Limp Home Mode 144
Loading 205
Cargo tie-down rings 214
Instructions 213
Roof rack 205
Ski sack* 205
Split rear bench seat 211
Locator lighting 102
Setting 128

378 IndexMenus 112
AUDIO 116
In control system 114, 115
Malfunction memory 120
NAVI 119
Settings menu 121
Standard display 116
Submenus 113
TEL* 136
Trip computer 134
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 126
Minispare wheel 302, 342
Bolts 304
Mounting 318
Mirrors
Activating exterior rear view mirror
parking position 147
Adjusting 38
Automatic antiglare for
rear view mirror 146Exterior rear view mirror 38
Exterior rear view mirror parking
positions 134
Interior rear view mirror 38
Storing exterior rear view mirror
parking position 99
MON 250
MON (Motor Octane Number) 359
Mph or km/h in speedometer 126
Multicontour seat* 95
Multifunction display 111, 359
Selecting language 126
Standard display 115
Multifunction display messages
ABS 284
BAS 281
Battery 285
Brake fluid 286
Brake pads 286
Check engine 276
Coolant 288
Coolant level 287Cruise control 290
Display 290
Doors 290
Engine 276
Engine oil level 291
ESP 282
Fuel reserve tank 293
Hood 293
Key 293
Lamps 293, 296
Parking brake 286
Sliding/pop-up roof 299
Steering column not
properly locked 298
Steering gear oil level 298
Tele Aid* 299
Telephone* 299
Trunk lid 299
Washer fluid 299
Multifunction
steering wheel 24, 112, 359
Buttons 112

387 Index
Hazard warning flasher 104
Headlamps 46
High beams 104
Rapid seat heating* 96
Rear fog lamp 103
Seat heating* 96
Windshield wipers 47
Synchronizing
ESP 282
Power windows 198
Sliding/pop-up roof* 201
T
Tachometer 23, 109
Displaying gear range 141
Overspeed range 109
Tail lamps
Cleaning 269
Replacing bulbs 311, 315
Tailgate
Closing 88
Opening 87Tar stains 268
Technical data
Air conditioning refrigerant 348
Brake fluid 348
Coolant 346
Coolants 352
Electrical system 343
Engine 340
Engine oil 348
Engine oil additives 348
Flexible fuel vehicles 350
Fuel requirements 349
Fuels 346
Gasoline additives 350
Lubricants 346
Main dimensions 344
Premium unleaded gasoline 349
Rims and tires 341
Weights 345
Windshield and headlamp
washer system 347, 354
Windshield washer 347Tele Aid* 222
Emergency calls 224
Information 227
Initiating an emergency call
manually 225
Messages in display 299
Remote door unlock 229
Roadside assistance 226
Stolen vehicle tracking services 230
System self-check 223
Tele Aid* System 222
Upgrade signals 228
Tele Aid* System 361
Telematics* 361
Telephone* 24, 221
Answering a call 137
Dialing a number
from the phone book 138
Emergency call 194
Ending a call 137
Hands-free microphone 27
Loading phone book* 138