2001 MERCEDES-BENZ C320 coolant level

266 Check regularly and before a long trip
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Check regularly and before a long trip 1Windshield washer and
headlamp cleaning system
For refilling reservoir see page 302.
2Coolant level,
see “Coolant level” on page 301
3Brake fluid,
see “Brake fluid” on page 357
Opening hood, see page 297.
Ve h i c l e l i g h t i n g : Check function and cleanliness. For
replacement of light bulbs, see “Exterior lamps” on
page 326.
Exterior lamp switch, see page 130.
2
3

267 Contents - Instrument cluster display
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and indicator lamps in
the instrument cluster .............268
On-board diagnostic system .........268
Check engine malfunction
indicator lamp .............................268
Brake warning lamp ..................270
Supplemental restraint system
(SRS) indicator lamp .................. 271
Fuel reserve warning ................. 271
ABS malfunction
indicator lamp .............................272
Electronic stability program
(ESP) — warning lamp ...............273
Seat belt nonusage
warning lamp .............................273Malfunction and indicator lamp in
the center console .................... 273
AIRBAG OFF indicator lamp .... 273
Malfunction and warning messages
in the multifunction display ....274
DISPLAY DEFECTIVE ................ 275
BATTERY / ALTERNATOR ........276
ANTILOCK BRAKE SYSTEM .... 277
BRAKE ASSIST ........................... 277
BRAKE LINING WEAR .............. 278
BRAKE FLUID ............................ 278
PARKING BRAKE ....................... 279
SEAT BELT SYSTEM .................. 279
ELEC. STABIL. PROG.
(Electronic stability program) . 280
COOLANT (coolant level) ......... 281COOLANT
(coolant temperature) ................282
ENGINE OIL LEVEL ...................283
LIGHTING SYSTEM ....................284
LIGHT SENSOR ...........................286
DOOR ...........................................286
TRUNK OPEN .............................287
HOOD ...........................................287
TELEPHONE – FUNCTION .......288
TELE AID .....................................288
WASHER FLUID .........................289
RESTRAINT SYSTEM .................290
KEY ...............................................290
FUEL RESERVE .......................... 291
UNDERVOLTAGE ........................ 291
STEER. WHEEL ADJUST. ...........292
ENTRANCE POSITION ..............292

281 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index COOLANT (coolant level)
* C = Category, see page 274When this message appears while driving, the coolant
level has dropped below the required level. If no leaks
are noticeable and the engine temperature does not
increase, continue to drive to the nearest service station
and have coolant added to the coolant system.The low engine coolant level warning should not be
ignored. Extended driving with the symbol displayed
may cause serious engine damage not covered by the
Mercedes-Benz Limited Warranty.
In cases of major or frequent minor coolant loss, have
the cooling system checked at your authorized
Mercedes-Benz Center as soon as possible.
Note:
Do not drive without coolant in the cooling system. The
engine will overheat causing major engine damage.
Monitor the coolant temperature gauge while driving,
see page 124.
See page 302 for instructions on topping up the coolant.Line 1 Line 2 C*
COOLANT CHECK LEVEL! 2
Wa r n i n g !
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which may
burn if it comes into contact with hot engine parts.
You can be seriously burned.

293 Contents - Practical hints
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Practical hintsFirst aid kit .....................................294
Stowing things in the vehicle ......294
Fuses ................................................295
Hood .................................................297
Checking engine oil level .............300
Automatic transmission fluid
level ............................................. 301
Coolant level ................................... 301
Adding coolant ...........................302
Windshield and headlamp washer
system .........................................302Spare wheel, vehicle tools, storage
compartment ............................. 304
Vehicle jack .................................... 305
Wheels ............................................ 306
Tire replacement ....................... 306
Rotating wheels ......................... 307
Spare wheel .................................... 308
Changing wheels ........................... 309
Tire inflation pressure .................. 315
Battery .............................................. 316
Jump starting .................................. 318
Towing the vehicle ........................ 321
Transmission selector lever,
manually unlocking .................. 325Exterior lamps ................................326
Replacing bulbs ..........................326
Trunk lamp ..................................... 331
Changing batteries in the electronic
main key .....................................332
Synchronizing remote
control ..........................................334
Emergency engine shut-down .....334
Fuel filler flap, manual release ...335
Replacing wiper blade insert .......337
Roof rack .........................................338

301 Engine compartment
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Automatic transmission fluid level
The transmission has a permanent fill of automatic
transmission fluid.
Regular automatic transmission fluid level checks and
changes are not required. For this reason the dipstick is
omitted.
If you notice fluid leaks or gear shifting malfunctions,
have your authorized Mercedes-Benz Center check the
transmission fluid level.Coolant level
1Coolant expansion tank
To check the coolant level, the vehicle must be parked
on level ground and the engine stopped.
Check coolant level only when coolant is cold.
The coolant level should reach the black top part of the
reservoir.
See page 359 for antifreeze / anticorrosion mixture.

360 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
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 anticorrosion /
antifreeze should be used to bring it up to the proper
level (have cooling system checked for signs of leakage).
The water in the cooling system must meet minimum
requirements, which are usually satisfied by normal
drinking water. If your are not sure about the water
quality, consult your authorized Mercedes-Benz Center.
Anticorrosion / antifreeze
Your vehic le con tain s a n umbe r o f alumi nium parts. The
use of aluminium components in motor vehicle engines
necessitates that anticorrosion / antifreeze coolant used
in such engines be specifically formulated to protect the
aluminium parts. (Failure to use such anticorrosion /
antifreeze coolant will result in a significantly
shortened service life.)
Therefore the following product is strongly
recommended for use in your vehicle: Mercedes-Benz
anticorrosion / antifreeze agent.Before the start of the winter season (or once a year in
the 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 quantity
Approximately freeze protection
– 35
°F
(– 37°C)– 49
°F
(– 45°C)
4.8 US qt
(4.5 l)5.3 US qt
(5.0 l)

365 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
BBabySmart
TM airbag deactivation system ..................... 62
Battery ............................................................................. 316
Block heater ....................................................................252
Brake assist system (BAS) ............................................257
CCellular telephone ......................................................... 210
Center console .................................................................. 18
Central locking switch .................................................... 33
Central locking system ................................................... 25
Automatic central locking ......................................... 34
Central locking switch ............................................... 33
Choosing global or selective mode ........................... 27
Doors ............................................................................. 31
General notes ............................................................... 24
Locking and unlocking with remote control .......... 27
Mechanical keys .......................................................... 30
Obtaining replacement keys ..................................... 23
Summer opening/convenience feature ................... 29
Vehicle keys ................................................................. 22
Check regularly and before a long trip ......................266
Checking engine oil level ............................................. 300Climate control ............................................................... 138
Adjustable air outlets,
rear passenger compartment ............................. 159
Air recirculation ........................................................ 144
Basic setting ............................................................... 142
Defrosting ................................................................... 143
Display and controls ................................................. 140
Dust filter ................................................................... 141
Economy mode .......................................................... 145
Front center console storage
compartment ventilation ..................................... 158
Residual engine heat utilization ............................. 145
Special settings ......................................................... 142
Windows fogged up on the inside .......................... 143
Windows fogged up on the outside ........................ 144
COMAND, radio, telephone and two-way radio ......... 218
Combination switch ....................................................... 134
Control and operation of radio transmitters .............. 218
Coolant level ...................................................................301
Coolant temperature gauge ..........................................124
Cruise control ................................................................ 254
Cup holder ....................................................................... 197

368 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
MMaintenance ................................................................... 219
Malfunction/warning message memory .................... 109
Manual seat ............................................................... 45, 48
Manual transmission ....................................................233
Memory function ............................................................. 85
Mirror, exterior, parking position,
front passenger side ................................................... 82
Multicontour seat ............................................................ 49
Multifunction display ...................................................... 92
Coolant temperature ................................................... 96
Engine oil level indicator ........................................... 96
FSS ................................................................................ 96
Individual settings ..................................................... 111
Tire inflation pressure monitor ................................ 96
Trip and main odometer ............................................ 96
Vehicle speed ............................................................... 96
Multifunction steering wheel ........................................ 92NNavigation system .......................................................... 106
Night security illumination ......................................... 132
OOn-board diagnostic system ........................................ 268
Overhead control panel ................................................... 15PPanic button ......................................................................30
Parcel net in front passenger footwell ....................... 202
Parking brake ................................................................ 243
Power windows ............................................................... 184
Blocking of rear door window operation ............... 186
Express opening and closing .................................. 185
Opening and closing ...................................................29
Synchronizing power windows ............................... 186
Problems with your vehicle .............................................. 8
Product information .......................................................... 1RRain sensor ..................................................................... 135
Rear passenger compartment
adjustable air outlets ................................................ 159
Rear window defroster .................................................. 157
Rear window sunshade ................................................. 191