2004 MERCEDES-BENZ C320 COUPE oil level

276 Practical hintsWhat to do if …When the message
ADD 1.0 Qt. ENGINE
OIL WHEN NEXT REFUELING!
(Canada:
1.0
Liter
) appears while the engine is running
and at operating temperature, the engine
oil level has dropped to approximately the
minimum mark on the dipstick.When this occurs, the warning will first
come on intermittently and then stay on if
the oil level drops further.
Visually check for oil leaks. If no obvious oil
leaks are noted, drive to the nearest ser-
vice station where the engine oil should be
topped to the “full” mark on the dipstick
with an approved oil.
Display symbol
Display message
Possible cause
Possible solution
:
ENGINE OIL
VISIT WORKSHOP!
It may be that there is water in the engine
oil.

Have the engine oil checked.
ENGINE OIL LEVEL
VISIT WORKSHOP!
The engine oil has dropped to a critical
level.

Check the engine oil level
(page 238) and add oil as required.

If you must add engine oil frequently,
have the engine checked for possible
leaks.
ENGINE OIL SENSOR
VISIT WORKSHOP!
The measuring system is malfunctioning.

Have the measuring system checked
by an authorized Mercedes-Benz
Center.!The engine oil level warnings should
not be ignored. Extended driving with
the symbol displayed could result in
serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.

282 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
1
RESTRAINT SYSTEM
DRIVE TO WORKSHOP!
The system is malfunctioning.

Drive with added caution to the
nearest authorized Mercedes-Benz
Center.
_
STEERING WHEEL ADJ.
LOCK!
The steering column is not properly
locked.

Lock steering column (
page 38).
STEERING OIL
VISIT WORKSHOP!
The steering gear oil level is too low.
There is a danger of steering gear
damage.

Have the system checked by an
authorized Mercedes-Benz Center.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be activated when needed in an
accident, which could result in serious or
fatal injury, or it might deploy unexpectedly
and unnecessarily which could also result in
injury.
Warning!
G
If the level of steering gear oil in reservoir is
too low, the steering power assistance could
fail. Much greater effort will then be needed
to turn the steering wheel.
Do not add steering oil without checking the
steering system.
Do not drive the vehicle. Have the system
checked at your authorized Mercedes-Benz
Center as soon as possible.

336 Technical dataFuels, coolants, lubricants, etc.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. 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% 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 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, con-
sult your authorized Mercedes-Benz
Center.

351 Index
Checking
Coolant level 235, 241
Oil level 235, 237
Tire inflate pressure 235
Vehicle lighting 235
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 204
Cleaning
Cup holder 255
Gear selector lever 255
Hard plastic trim items 255
Headlamps 148
Headliner and shelf
below rear window 255
Instrument cluster 255
Leather upholstery 256
Light alloy wheels 254MB Tex upholstery 256
Plastic and rubber parts 256
Seat belts 255
Steering wheel 255
Upholstery 256
Windows 254
Windshield 50
Wiper blades 254
Wood trims 256
Climate control 150
Adjusting 153
Defogging windshield 153
Defrosting 154
Rear window defroster 149
Setting the temperature 153
Clock 23, 122
Closing
Glove box 200
Hood 237
power window with SmartKey 188Roller sunblind for the
sliding/pop-up roof 189
Side windows 187
Sliding/pop-up roof 190, 292
Trunk lid 86
Windows 186
Windows with SmartKey 188
Closing sliding/pop-up roof
In an emergency 292
Cockpit 20, 341
Cockpit management and data system
(COMAND*) 342
Collapsible tire 342
COMAND* 342
COMAND* see separate operating instruc-
tions
Combination switch 102
High beam flasher 102
Turn signals 48
Windshield wipers 49
Consumer information 339
Control and operation of radio
transmitters 230
Control system 109, 342

354 Index
Safety systems 73
Through standing water 229
Driving abroad 230
Driving instructions 223
Driving off 225
Driving safety systems
ABS 73
BAS 74
ESP 75
Driving systems 194
Cruise control 194
Driving safety systems 73
E
Easy-entry/exit feature 89
Activating 130
Interrupting movement 89, 130
Electrical fuses 317
Electrical system
Technical data 327
Electronic Stability Program
see ESP 23, 75, 342Emergency call system* 206
Emergency calls
Initiating an emergency call 209
Telephone* 184
With Tele Aid* 208
Emergency operation
(Limp Home Mode) 145
Emergency operations
Closing sliding/pop-up roof 292
Locking the vehicle 289
Opening sliding/pop-up roof 292
Remote door unlock 213
Unlocking the vehicle 288
Emergency release
Trunk lid 86
Emergency tensioning device
see ETD 64, 342
Emission control 231
Emission control label 322
Ending
A call (telephone) 135Engine
Compartment 236
Message in display 260
Starting with
automatic transmission 45
Starting with manual
transmission 44
Starting with the key 45
Technical data 324
Turning off with the key 53
Engine cleaning 253
Engine compartment 236
Fuse box in 317
Hood 236
Engine malfunction
indicator lamp 23, 260
Engine number 342
Engine oil 237, 332
Adding 239
Additives 332
Checking level 237
Consumption 237
Display messages 275
Filler neck 240

355 Index
Messages in display 238, 276
Viscosity 342
Engine oil level see Oil level 235
ESP 23, 75, 342
Messages in display 266
Switching off 76
Switching on 77
Synchronizing 266
Warning lamp 261
ETD 342
Safety guidelines 60
ETD (Emergency tensioning device) 64
Ethanol fuel
At the gas station 233
Switching fuels 334
Exterior lamp switch 98
Exterior lamps
Delayed shut-off 127
Exterior rear view mirror
Activating parking position 147Exterior rear view mirrors
Adjusting 40
Parking position for 132
F
Fahrenheit
Setting temperature units 123
Fastening the seat belts 41
Fine adjustment
Cruise control 196
First aid kit 284
Flat tire 301
Inflating the spare tire 304
Lowering the vehicle 306
Mounting the spare wheel 301
Preparing the vehicle 301
Spare wheel 285
Flexible fuel vehicles 334
At the gas station 233
Switching fuels 334
Flexible Service System (FSS) 249, 342Fog lamp, front 101
Fog lamp, rear 101, 294
Fog lamps
Replacing bulbs 293
Fog lamps, front
Messages in display 278
Replacing bulbs 294
Front airbags 61
Front fog lamp
Switching on 101
Front lamps
Bi-Xenon type 296
Halogen-type 295
Messages in display 277, 279
Replacing bulbs 293, 295
Switching on 98
Front seat backrest
Folding backrest back 37
Folding backrest forward 36

361 Index
Mechanical key 288, 289
Memory function 95, 343
Recalling positions from memory 96
Storing exterior rear view mirror
parking positions 97
Storing key dependent settings 96
Menus 110
AUDIO 114
Control system 343
In control system 112, 113
Malfunction memory 117
NAV 117
Settings menu 118
Standard display 114
Submenus 111
TEL* 134
Trip computer 132
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 124Mirrors
Adjusting 39
Automatic antiglare for
rear view mirror 146
Exterior rear view mirror 40
Exterior rear view mirror
parking positions 132
Interior rear view mirror 39
Storing exterior rear view mirror
parking position 97
MON 234
MON (Motor Octane Number) 343
Mph or km/h in speedometer 124
Multifunction display 109, 343
Displaying gear range 141
Selecting language 124
Standard display 113
Multifunction display messages
ABS 268
BAS 265
Battery 269
Brake fluid 270
Brake pads 270Check engine 260
Check gas cap 277
Coolant 272
Coolant level 271
Cruise control 274
Display 274
Doors 274
Engine 260
Engine oil 276
ESP 266
Fuel reserve tank 277
Hood 277
Key 277
Lamps 277, 279–??
Parking brake 269
Steering column
not properly locked 282
Steering gear oil level 282
Tele Aid* 283
Telephone* 283
Trunk lid 283

362 Index
Washer fluid 283
Multifunction steering wheel 24, 110, 343
Buttons 110
N
Navigation system
Operating 117
See separate COMAND* operating in-
structions
Night security illumination 100
Setting 127
O
Occupant safety 56
Airbags 57
Children and airbags 58
Children in the vehicle 65
Fastening the seat belt 41
Infant and child restraint systems 65
LATCH child seat mounts 70
Seat belts 41, 60
Odometer, main 23Oil
Adding 239
Consumption 237
Dipstick 237
Filler neck 240
Viscosity 342
Oil level
Checking 235
One-touch gearshifting 140
Canceling gear range limit 140
Downshifting 140
Upshifting 140
Opening
Ashtray 203
Doors from the inside 85
Fuel filler flap 233
Fuel filler flap manually 291
Glove box 200
Hood 236
power window with SmartKey 188
Roller sunblind for the
sliding/pop-up roof 189Side windows 187
Sliding/pop-up roof 190, 292
Sliding/pop-up roof in an
emergency 292
Sliding/pop-up roof with
SmartKey 192
Trunk 85
Windows 186, 187
Windows with SmartKey 188
Operating
Audio system 159
Cassette player 116
CD player 116
COMAND* see separate operating in-
structions
Navigation system 117
Radio 115
Radio transmitters 230
Telephone* 134, 159, 179
Operating safety
Audio system 159
Operator’s Manual 10
Ornamental moldings 253