2003 MERCEDES-BENZ C320 COUPE coolant temperature

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.

336 IndexCassette player
Operating 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 295CHECK 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 244Seat 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 112Selecting 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 190Driving 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

342 IndexInflating
Spare 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 211Interior 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 84Factory 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