2001 MERCEDES-BENZ C240 warning light

Contents
Trip and main odometer, FSS, coolant
temperature, vehicle speed,
engine oil level indicator ........... 96
Audio systems .................................. 98
Radio .............................................. 98
CD player ....................................... 99
Cassette player ........................... 100
Telephone ........................................ 101
Navigation system .......................... 106
Trip computer ................................. 107
Malfunction/warning
message memory ...................... 109
Individual settings ..........................111
Setting the audio volume .............. 123
Coolant temperature gauge .......... 124
Flexible service system
(FSS) ............................................ 125
Engine oil level indicator .............. 128
Engine oil consumption ................ 129
Exterior lamp switch ..................... 130
Headlamp mode ............................. 131Night security illumination ..........132
Locator lighting ...........................133
Headlamp cleaning system ...........133
Combination switch .......................134
Hazard warning flasher
switch ..........................................137
Climate control ...............................138
Automatic climate control ............ 146
Front center console storage
compartment ventilation ..........158
Rear passenger compartment
adjustable air outlets ................159
Operation Audio and telephone ...160
Operating safety .............................160
Operating and
display elements ........................ 161
Button and soft key operation ......163
Operation .........................................163
Power windows ...............................184
Sliding/pop-up roof ........................187
Interior lighting ..............................189
Rear window sunshade ................. 191Sun visors ....................................... 192
Vanity mirrors ................................ 192
Interior ............................................ 193
Storage compartments and
armrests ..................................... 193
Glove box ..................................... 194
Cup holder ...................................... 197
Ashtrays .......................................... 199
Lighter ............................................. 201
Parcel net in front passenger
footwell .......................................202
Ski sack ...........................................202
Enlarged cargo area .......................207
Split folding rear seat bench ........207
Loading instructions
(vehicle with enlarged
cargo area) ..................................209
Cellular telephone ......................... 210
Telephone, general ........................ 211
Garage door opener ....................... 212

Contents
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) .......... 281
COOLANT
(coolant temperature) ................282ENGINE 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
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 .........................................302
Spare wheel, vehicle tools, storage
compartment .............................304
Vehicle jack .....................................305

21 Contents - Operation
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Coolant temperature gauge .......... 124
Flexible service system
(FSS) ............................................ 125
Engine oil level indicator .............. 128
Engine oil consumption ................ 129
Exterior lamp switch ..................... 130
Headlamp mode ............................. 131
Night security illumination ......... 132
Locator lighting .......................... 133
Headlamp cleaning system .......... 133
Combination switch ...................... 134
Hazard warning flasher
switch .......................................... 137
Climate control ............................... 138
Automatic climate control ............ 146
Front center console storage
compartment ventilation ......... 158Rear passenger compartment
adjustable air outlets ................159
Operation Audio and telephone ...160
Operating safety .............................160
Operating and
display elements ........................ 161
Button and soft key operation ......163
Operation .........................................163
Power windows ...............................184
Sliding/pop-up roof ........................187
Interior lighting ..............................189
Rear window sunshade ................. 191
Sun visors ........................................192
Vanity mirrors ................................192
Interior .............................................193Storage compartments and
armrests ..................................... 193
Glove box ..................................... 194
Cup holder ...................................... 197
Ashtrays .......................................... 199
Lighter ............................................. 201
Parcel net in front passenger
footwell .......................................202
Ski sack ...........................................202
Enlarged cargo area .......................207
Split folding rear seat bench ........207
Loading instructions
(vehicle with enlarged
cargo area) ..................................209
Cellular telephone ......................... 210
Telephone, general ........................ 211
Garage door opener ....................... 212

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

273 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Electronic stability program (ESP) — warning lamp
The yellow ESP warning lamp in the
speedometer dial comes on with the
electronic key in starter switch position 2.
It should go out with engine running.
If the ESP malfunction indicator lamp remains
illuminated with the engine running, a malfunction has
been detected in the system. Pressing the accelerator
pedal will require greater effort. Only partial engine
output will be available.
See elec tr on ic stability p rogram (ESP ) on p age 26 0 if t he
warning lamp lights up or flashes when the vehicle is
moving.
Seat belt nonusage warning lamp
With the electronic key in starter switch
position 2, the seat belt nonusage warning
lamp comes on, and a warning sounds for a
short time if the drivers seat belt is not fastened.
After starting the engine, the seat belt nonusage
warning lamp blinks for a brief period to remind the
driver and passengers to fasten seat belts.Malfunction and indicator lamp in the center
console
AIRBAG OFF indicator lamp
The ü indicator lamp will light up for approximately
6 seconds when you turn the electronic key in starter
switch to position 1 or 2.
It does not light up if there is a fault in the system.
The ü indicator lamp stays lit as long as a
Baby Smart
TM child seat is properly installed on the
front passenger seat. It indicates that the front
passenger airbag is switched off.
See page 62 for BabySmart
TM airbag and its deactivation
system.
Baby Smart
TM is a trademark of Siemens Automotive Corp.

284 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
LIGHTING SYSTEM
Line 1 Line 2 C*
LOW BEAM,L CHECK LAMP! 2
LOW BEAM,R CHECK LAMP! 2
DISPLAY DEFECTIVE VISIT WORKSHOP!
1
2
TURN SIGNAL, L CHECK LAMP! 2
TURN SIGNAL, R CHECK LAMP! 2
L. TURN SIG. RFLECTR CHECK LAMP! 2
R. TURN SIG. RFLECTR CHECK LAMP! 2
TURN SIGNAL F, L CHECK LAMP! 2
TURN SIGNAL F, R CHECK LAMP! 2
BRAKE LIGHT
2
VISIT WORKSHOP! 2
BRAKE LIGHT, L
3
CHECK LAMP! 2
BRAKE LIGHT, R
3
CHECK LAMP! 2
3RD STOP LAMP
3
CHECK LAMP! 2
HIGH BEAM, L CHECK LAMP! 2
HIGH BEAM, R CHECK LAMP! 2
LICENSE PLATE L, L CHECK LAMP! 2
LICENSE PLATE L, R CHECK LAMP! 2
LIGHTS SWITCH OFF LIGHTS! 1
AUTOM. LIGHT ON REMOVE KEY! 1
FRONT FOGLAMP, L CHECK LAMP! 2
FRONT FOGLAMP, R CHECK LAMP! 2
REAR FOGLAMP CHECK LAMP! 2 Line 1 Line 2 C*

285 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care IndexIn t he case of bulb failures in certain lamps, ot her lamps
will substitute. See page 326 for instructions on
replacing bulbs.
* C = Category, see page 274
1 The display or the system is malfunctioning.
2 The brake lamps are switching on after a delay or are permanently
on – visit workshop immediately.
3 The brake lamp comprises several light emitting diodes. The
warning message will only appear if all light emitting diodes have
stopped working.
4 Other bulbs will be brought into use as replacements when certain
lamps blow. REAR FOGLAMP SWITCH OFF
SUBSTITUTE LAMP ON!
4
2
REVERSE LIGHT, L CHECK LAMP! 2
REVERSE LIGHT, R CHECK LAMP! 2
TAIL LIGHT, L CHECK LAMP!
SUBSTITUTE LAMP ON!
4
2
TAIL LIGHT, R CHECK LAMP!
SUBSTITUTE LAMP ON!
4
2
SIDELIGHT, L CHECK LAMP!
SUBSTITUTE LAMP ON!
4
2
SIDELIGHT, R CHECK LAMP!
SUBSTITUTE LAMP ON!
4
2 Line 1 Line 2 C*

286 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
LIGHT SENSOR
* C = Category, see page 274The headlamps will be switched on automatically if the
light sensor malfunctions.
The “LIGHTING” setting menu can be set to “MANUAL”
in the individual settings. See page 117. It will then be
possible to switch the headlamps on and off using the
exterior lamp switch. See page 130 for notes on the
exterior lamp switch. DOOR
* C = Category, see page 274. Line 1 Line 2 C*
LIGHT SENSOR VISIT WORKSHOP! 2Line 1 Line 2 C*
DOOR OPEN! 1