2001 MERCEDES-BENZ C320 airbag

271 Malfunction and indicator lamps
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Supplemental restraint system (SRS) indicator lamp
The operational readiness of the airbag
system is verified by the indicator lamp
“SRS” in the instrument cluster when
turning the electronic key in starter switch to position 1
or 2. If no fault is detected, the lamp will go out after
approximately 4 seconds; after the lamp goes out, the
system continues to monitor the components and
circuitry of the airbag system and will indicate a
malfunction by coming on again.
See page 65 for notes on airbags, see page 63 for belt
tensioners and page 55 for infant and child seat
restraint.Fuel reserve warning
1Fuel reserve indicator
When the warning lamp (1) comes on after starting the
engine, or if comes on while driving, it indicates that
the fuel level is down to the reserve quantity of
approximately 2.1 US gal (8 liters).
See page 264 for notes on refueling the vehicle.
Wa r n i n g !
In the event a malfunction of the “SRS” is indicated
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.
P54.30-3609-26

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.

290 Malfunction and warning messages
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
RESTRAINT SYSTEM
* C = Category, see page 274.See page 55 for notes on the seat belts, and page 65 for
notes on the airbags.KEY
* C = Category, see page 274.
1 Key needs possibly to be replaced. Line 1 Line 2 C*
RESTRAINT SYSTEM VISIT WORKSHOP! 1Line 1 Line 2 C*
REPLACE KEY
1
VISIT WORKSHOP! 2
AUTOM. LIGHT ON REMOVE KEY! 1

364 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Index
AAirbags .............................................................................. 65
ANTILOCK BRAKE SYSTEM
Malfunction and warning message ........................277
Antilock brake system (ABS) .......................................258
Antitheft alarm system ................................................... 38
Ashtrays .......................................................................... 199
Audio system
Button and soft key operation ................................. 163
Cassette mode ........................................................... 169
CD changer ................................................................ 174
CD mode ..................................................................... 173
Operating and display elements ............................. 161
Operating safety ........................................................ 160
Operation ................................................................... 163
Operation Audio and telephone .............................. 160
Radio mode ................................................................ 166
Telephone operation ................................................. 177
Audio systems .................................................................. 98
Cassette player .......................................................... 100
CD Player ...................................................................... 99
Radio ............................................................................. 98Automatic central locking ..............................................34
Automatic climate control ............................................ 146
Activated charcoal filter ........................................... 154
Adjustable air outlets,
rear passenger compartment ............................. 159
Air recirculation ........................................................ 153
Air volume, manual .................................................. 151
Basic setting ............................................................... 150
Defrosting ................................................................... 152
Display and controls ................................................. 148
Dust filter ................................................................... 150
Economy mode .......................................................... 155
Front center console storage
compartment ventilation ..................................... 158
Residual engine heat utilization ............................. 156
Special settings ......................................................... 151
Windows fogged up on the inside .......................... 152
Windows fogged up on the outside ........................ 152
Automatic transmission ............................................... 234
Fluid level ...................................................................301
Transmission selector lever,
manually unlocking ............................................ 325

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

366 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
DDashboard ......................................................................... 16
Door control panel ........................................................... 14
Door entry lamps ........................................................... 190
Drive sensibly - Save Fuel ............................................244EEasy-entry/exit feature ................................................... 41
Electronic main key ......................................................... 23
Changing batteries ...................................................332
Synchronizing remote control ................................334
Electronic stability program (ESP) ..............................260
Emergency engine shut-down .....................................334
Emergency operation of sliding/pop-up roof ............335
Emergency tensioning retractor (ETR) ......................... 64
Emergency unlocking in case of accident ................... 34
Engine oil consumption ................................................ 129
Engine oil level indicator .............................................. 128
Enlarged cargo area .......................................................207
ENTRANCE POSITION - malfunction and warning
messages ....................................................................292
Exterior lamp switch ..................................................... 130
Daytime running lamp mode .................................. 132
Exterior lamps ................................................................326Additional turn signals on
the exterior mirror .............................................. 330
Bulbs for high and low beam ................................. 328
Headlamp assembly ................................................. 327
High mounted stop lamp ......................................... 330
License plate lamps ................................................. 330
Parking and standing lamp .................................... 328
Replacing bulbs ........................................................ 326
Taillamp assemblies ................................................ 329
Turn signal lamp ...................................................... 328
Exterior mirror adjustment ............................................ 81
Exterior mirror, front passenger side,
parking position ..........................................................82
FFirst aid kit ..................................................................... 294
Flexible service system (FSS) ......................................125
Front airbags ....................................................................65
Front center console storage
compartment ventilation ......................................... 158
Front seat adjustment .....................................................42
Fuel filler flap, manual release ................................... 335
Fuel reserve warning ..................................................... 271
Fuses ............................................................................... 295

369 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex Removal and installation of
front seat head restraints .......................................... 47
Replacement keys
Obtaining ..................................................................... 23
Replacing wiper blade insert .......................................337
Reporting Safety Defects .................................................. 9
REST .........................................................................145, 156
Roof rack .........................................................................338
SSeat belt nonusage warning system ............................. 56
Seat belts ........................................................................... 55
Fastening ...................................................................... 58
Operation ..................................................................... 59
Unfastening .................................................................. 59
Warning lamp ............................................................273
Seat belts and integrated
restraint system .......................................................... 55
Seats
Front seat adjustment ................................................ 42
Manual seat ................................................................. 45
Power seat .................................................................... 43
Setting the audio volume .............................................. 123
Side impact airbags ......................................................... 68Ski sack .......................................................................... 202
Sliding/pop-up roof ........................................................ 187
Opening and closing ...................................................29
Synchronizing ........................................................... 188
Spare wheel ................................................................... 308
Spare wheel, vehicle tools, storage compartment .... 304
Split folding rear seat bench ....................................... 207
Standby bulb function ...................................................331
Start lock-out .....................................................................24
Starter switch ................................................................. 230
Starting and turning off the engine ........................... 232
STEER. WHEEL ADJUST. - malfunction and warning
messages ................................................................... 292
Steering lock
See starter switch ..................................................... 230
Steering wheel
Easy-entry/exit feature .............................................. 41
Steering wheel adjustment
electrical .......................................................................79
manual ..........................................................................77
Storage compartments and armrests .......................... 193
Storing mirror positions ................................................. 81
Storing seat positions ......................................................44
Stowing things in the vehicle ..................................... 294
Sun visors ........................................................................ 192
Supplemental Restraint System (SRS) ..........................63

370 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
TTechnical data ................................................................ 351
Tele Aid ...........................................................................220
Initiating an emergency call ...................................222
Telephone ........................................................................ 101
Incoming call ............................................................. 105
Redialing .................................................................... 103
Telephone book ......................................................... 101
Telephone, general ........................................................ 211
Telephones and two-way radios ................................... 218
Telescoping steering column -
malfunction and warning messages ......................292
The first 1 000 miles (1 500 km) ................................ 219
Tire inflation pressure .................................................. 315
Tow-away alarm ................................................................ 39
Towing the vehicle ......................................................... 321
Transmission selector lever, manually unlocking ....325
Trip computer ................................................................. 107
Trunk ................................................................................. 35
Opening ........................................................................ 28
Release switch ............................................................. 37
Trunk lamp ..................................................................... 331
UUnlocking the vehicle with remote control .................27VVanity mirrors ................................................................ 192
Vehicle keys ......................................................................22
Vehicle tools ................................................................... 304WWhat you should know at the gas station ................. 264
Wheels ............................................................................ 306
Where to find it .................................................................. 7
Window curtain airbag ....................................................68
Windshield washer system .......................................... 302
Wiper blade
Replacing insert ....................................................... 337