2004 MERCEDES-BENZ C320 4MATIC WAGON air conditioning

339 Technical data
Layout of poly-V-belt drive
Layout of poly-V-belt drive
C 240/C 320 (all models)
1Automatic belt tensioner
2Power steering pump
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley

347 Technical data
Fuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Fuel tank
including a reserve of
16.4 US gal (62.0 l)
2.1 US gal (8.0 l)
Premium unleaded gasoline:
Posted Octane 91 (Avg. of 96 RON/86 MON)Flexible Fuel Vehicle (identified by a label
reading Premium gasoline or E85 only! on
fuel filler flap):
Alternative fuel: Ethanol fuel (E85)
Air conditioning system
R-134a refrigerant and special PAG lubricant
oil (never R-12)
Windshield washer
3.2 US qt (3.0 l)
MB Windshield Washer Concentrate
1
Windshield washer and
headlamp cleaning system*
6.4 US qt (6.0 l)
1Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing point or MB Windshield Washer Concentrate “S” and commercially available
premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 354).

348 Technical dataFuels, coolants, lubricants, etc.Engine oils
Engine oils are specifically tested for their
suitability in our engines. Therefore, only
use engine oils approved by
Mercedes-Benz. Information on approved
engine oils 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 damage the engine.
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
conditioning system.Never use R-12 (CFC) or mineral-based
lubricating 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
bubbles in the system, thus reducing the
system’s efficiency.
Therefore, the brake fluid must be
replaced every two years, preferably in the
spring.
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Center will
provide you with additional information.
!Always check the oil filler cap
(page 256) for important information
pertaining to the engine oil needing to
meet a specific Mercedes-Benz specifi-
cation (e.g. MB 229.5). If such informa-
tion is printed on the oil filler cap, only
use an engine oil from the list of ap-
proved engine oils in the Factory Ap-
proved Service Products pamphlet that
meets the specification indicated on
the oil filler cap.
Using engine oils of other specification
may cause the FSS to incorrectly deter-
mine the next service interval and will
result in engine damage not covered by
the Mercedes-Benz Limited Warranty.

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

364 Index
Seats 32, 33
Steering column height 38
Steering column length 38
Steering wheel 36
Air conditioning (cooling)
Turning off 156, 166
Turning on 156, 166
Air conditioning refrigerant 348
Air distribution
Adjusting 153, 162
Air pressure see Tire inflation pressure
Air recirculation mode 154, 163
Activating 154, 163
Deactivating 155, 164
Air vents, rear passenger compartment
Adjustable 157, 168
Air volume
Adjusting 153, 162Airbags 57
BabySmart
TM deactivation
system 68
Children 58
Front 61
Passenger 61
Side impact 62
Window curtain 62
Alarm
Audible 73, 81
Canceling 81
Visual 80
Alarm system
Anti-theft 80
Alignment bolt 357
Alignment bolt (vehicle tool kit) 320
Anticorrosion/antifreeze 353
Antiglare
Automatic 146
Manual 146
Antilock brake system (ABS) 357Anti-theft alarm system
Arming 80
Canceling alarm 81
Disarming 81
Anti-theft systems 80
Anti-theft alarm system* 80
Immobilizer 80
Tow-away alarm 81
Aquaplaning see Hydroplaning
Armrest
Storage compartment in front of 217
Storage spaces 218
Ashtray 219
ATF (automatic transmission fluid) 256
AUDIO menu 116
Selecting radio station 117
Audio system 169
Audio and telephone, operation 169
Button and soft key operation 172
Cassette operation 182
CD operation 185
Operating and display elements 170

369 Index
Coolant 257, 352
Adding 257
Anticorrosion/antifreeze
quantity 352
Capacities 346
Checking level 257
Messages in display 287, 288
Temperature 248
Temperature gauge 108
Warning lamp 288
Coolant level
Checking 257
Cruise control 202, 358
Canceling 203
Driving downhill 203
Driving uphill 203
Fine adjustment 204
Saving current speed 203
Setting speeds 204
Cruise control lever 202
Cruising range, fuel 351Cup holder
Cleaning 271
In front seat armrest 216
In rear seat armrest 217
Customer assistance system (CAC) 357
D
Daytime running lamp mode 102
Setting 127, 128
Deactivating
Air conditioning 156
Air recirculation mode 155, 164
Alarm 81
Anti-theft alarm system 81
Automatic climate control* 159
Central locking (control system) 131
Charcoal filter 165
Climate control 151
Climate control system 155
Cruise control 203
Defrosting 154, 163ESP 77
Exterior lamps 101
Exterior lamps delayed shut-off 129
Front fog lamps 129
Hazard warning flasher 104
Headlamps 52
Immobilizer 80
Interior lighting delayed shut-off 130
Rapid seat heater* 96
Rear window defroster 149
Seat heater* 96
Tow-away alarm 82
Deep water see Standing water
Defogging
Windshield 153, 162
Defrosting 154, 163
Delayed shut-off
Exterior lamps 129
Interior lighting 130
Dialing
A number (telephone) 138

382 IndexRear view mirror automatic antiglare 146
Rear view mirrors see Mirrors
Rear window defroster 149
Rear window wiper/washer 49
Reconnecting
Vehicle battery 326
Refrigerant
Air conditioning 348
Refueling 249
Regular checks 251
Reinstalling vehicle battery 325
Remote control
SmartKey 84
Remote door unlock
With Tele Aid* 229
Remote Vehicle Diagnostics 360
Removing
Parcel net in cargo compartment 208
Ski sack 207
Twin-reel roller blind 210
Vehicle battery 325
Wheel 320
Wiper blades 317Replacing
Backup lamp bulbs 315
Brake lamp bulbs 315
Bulbs 310
Front lamp bulbs 312
Front turn signal bulbs 312, 313
Fuses 334
High beam bulbs 312
High beam bulbs
(xenon-type headlamps) 313
License plate lamp bulbs 316
Low beam bulbs 312
Parking lamp bulbs 313, 314
Rear fog lamp bulbs 315
Rear lamp bulbs 311, 315
Rear turn signal bulbs 315
Side marker lamp bulbs 315
Standing lamp bulbs 313, 314
Wiper blades 317
Reporting
Safety defects 18
Reset button in the instrument
cluster 121, 122Resetting
All functions (control system) 121
All functions of a submenu 122
Fuel consumption 135
Service indicator (FSS) 266
Trip odometer 109
Residual heat utilization 167
Residual ventilation 167
REST 360
Restraint system see Infant
and child restraint systems
Restraint systems 360
Rims 341
Roadside Assistance 12
Roadside assistance
Tele Aid* 226
RON 250
RON (Research Octane Number) 360
Roof rack 205
Rotating wheels 262
Rubber parts
Cleaning 272

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