2001 MERCEDES-BENZ CLK320 warning light

2 Contents
Trip and main odometer, vehicle
speed, FSS and engine oil level
indicator ....................................... 92
Audio systems .................................. 93
Radio .............................................. 93
CD player ....................................... 94
Cassette player ............................. 95
Telephone .......................................... 96
Telephone book ............................ 96
Redialing ....................................... 98
Incoming call .............................. 100
Navigation system .......................... 101
Trip computer ................................. 102
Malfunction message
memory ...................................... 104
Individual settings ......................... 106
Setting the audio volume .............. 108
Flexible service system
(FSS) ............................................ 109
Engine oil level indicator .............. 112
Engine oil consumption .................113Exterior lamp switch ...................... 114
Night security illumination .......... 115
Headlamp cleaning system ........... 116
Combination switch ....................... 117
Hazard warning flasher
switch .......................................... 119
Automatic climate control ............ 120
Display and controls ................. 122
Basic setting ............................... 122
Economy ...................................... 123
Special settings .......................... 123
Rear window defroster .............. 124
Air recirculation ........................ 125
Residual engine
heat utilization ........................... 125
Dust filter .................................... 126
Audio and telephone,
operation .................................... 127
Power windows .............................. 146
Sliding/pop-up roof ....................... 148
Interior lighting ..............................150Rear window sunshade ................. 151
Sun visors ....................................... 151
Illuminated vanity mirrors ........... 152
Interior ............................................ 152
Storage compartments,
armrest and cup holder ........... 152
Glove box ..................................... 153
Storage compartments
in center console ........................ 153
Ashtrays .......................................... 156
Lighter ............................................. 158
Enlarged cargo area –
split folding rear
seat backrest .............................. 159
Loading instructions ..................... 160
Cargo tie down rings ..................... 162
Parcel net in front
passenger footwell .................... 162
Telephone, general ........................ 163
Cellular telephone ......................... 163
Garage door opener ....................... 164
Ski sack ........................................... 168

4 Contents
Malfunction and indicator lamps in
the center console .....................230
AIRBAG OFF
indicator lamp .............................230
Malfunction and warning
messages in the
multifunction display ............... 231
DISPLAY DEFECTIVE
(engine control unit) ..................232
DISPLAY DEFECTIVE
(several systems) ........................232
BATTERY/ALTERNATOR ...........233
ABS-SYSTEM ...............................234
BRAKE ASSIST ...........................234
BRAKE LINING WEAR ..............235
BRAKE FLUID .............................235PARKING BRAKE ....................... 236
ENGINE FAN ............................... 236
COOLANT
(coolant level) ............................. 237
COOLANT TEMP.
(coolant temperature) ............... 238
LIGHTING SYSTEM ................... 239
LIGHT SENSOR .......................... 240
STEER. WHEEL ADJUST. .......... 240
ENGINE OIL LEVEL ................... 241
ELEC. STABIL. PROG.
(Electronic stability
program) ..................................... 242
REMOVE KEY ............................. 242
WASHER FLUID ......................... 243
TELE AID ..................................... 244
Practical hintsFirst aid kit .....................................246
Shelf below rear window ..............246
Stowing things in the vehicle ......246
Fuses ................................................247
Hood .................................................249
Checking engine
oil level ....................................... 251
Automatic transmission
fluid level ...................................252
Coolant level ...................................252
Adding coolant ...........................253
Windshield washer/headlamp
cleaning system ........................254
Windshield and
headlamp washer
fluid mixing ratio .......................254

19 Instruments and controls
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index For more detailed descriptions see Index on page 309.
For adjustment of air outlets, refer to automatic climate
control, see page 120.
1Side air outlet, adjustable
2Air volume control for side air outlet
3Exterior lamp switch, see page 114
4Parking brake release, see page 200
5Parking brake pedal, see page 200
6Hood lock release, see page 249
7Combination switch, see page 117
8Cruise control switch, see page 210
9Multifunction steering wheel, see page 88
Horn (with electronic key in steering lock
position 1 or 2)
10Instrument cluster, see page 82
11Voice recognition system switch, see separate
operating instructions
12Steering lock with ignition/starter switch,
see page 18813Center air outlets, adjustable
14Air volume control for center air outlets
15Left front seat heater switch, see page 55
16Headlamp washer switch, see page 116
17Switch for rear seat head restraints, see page 52
18Hazard warning flasher switch, see page 119
19Central locking switch, see page 36
20Switch for tow-away alarm, see page 44
Indicator lamp for antitheft alarm system,
see page 42
21Right front seat heater switch, see page 55
22Automatic climate control, see page 120
Rear window defroster switch, see page 124
23Glove box (illuminated with electronic key in
steering lock position 1 or 2), see page 153
24Audio system, see page 127
25Storage compartment
26Ashtray with lighter, see page 156

23 Contents – Operation
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Telephone .......................................... 96
Telephone book ............................ 96
Redialing ....................................... 98
Incoming call .............................. 100
Navigation system .......................... 101
Trip computer ................................. 102
Malfunction message
memory ...................................... 104
Individual settings ......................... 106
Setting the audio volume .............. 108
Flexible service system
(FSS) ............................................ 109
Engine oil level indicator .............. 112
Engine oil consumption .................113
Exterior lamp switch ......................114
Night security illumination ..........115
Headlamp cleaning system ...........116
Combination switch .......................117
Hazard warning flasher
switch ...........................................119Automatic climate control ............ 120
Display and controls ................. 122
Basic setting ............................... 122
Economy ...................................... 123
Special settings .......................... 123
Rear window defroster .............. 124
Air recirculation ........................ 125
Residual engine
heat utilization ........................... 125
Dust filter .................................... 126
Audio and telephone,
operation .................................... 127
Power windows .............................. 146
Sliding/pop-up roof ....................... 148
Interior lighting ..............................150
Rear window sunshade .................151
Sun visors ........................................151
Illuminated vanity mirrors ...........152
Interior .............................................152Storage compartments,
armrest and cup holder ........... 152
Glove box ..................................... 153
Storage compartments
in center console ........................ 153
Ashtrays .......................................... 156
Lighter ............................................. 158
Enlarged cargo area –
split folding rear
seat backrest .............................. 159
Loading instructions ..................... 160
Cargo tie down rings ..................... 162
Parcel net in front
passenger footwell .................... 162
Telephone, general ........................ 163
Cellular telephone ......................... 163
Garage door opener ....................... 164
Ski sack ........................................... 168

115 Exterior lamp switch
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
With the electronic key removed and the driver’s door
open, a warning sounds and the message “SWITCH OFF
LIGHTS” in the multifunction indicator appears if the
vehicle’s exterior lamps (except standing lamps) are not
switched off.
Fog lamps will operate with the parking lamps and / or
the low beam headlamps on. Fog lamps should only be
used in conjunction with low beam headlamps. Consult
your State or Province Motor Vehicle Regulations
regarding allowable lamp operation.
Fog lamps are automatically switched off when the
exterior lamp switch is turned to position D.Daytime running lamps (Canada only)
When the engine is running and the selector lever is in
a driving position, the low beam headlamps (includes
parking lamps, side marker lamps, taillamps and
license plate lamps) are automatically switched on.
When shifting from a driving position to position “N”
or “P”, the low beam switches off (2 seconds delay).
For nighttime driving the exterior lamp switch should
be turned to position B to permit activation of the
high beam headlamps.
Night security illumination
When exiting the vehicle after driving with the exterior
lamps on, they switch on again for added illumination
for approximately 30 seconds after closing the last door.
The lamp-on time period can be changed at your
Mercedes-Benz Center.

225 Contents – Instrument cluster display
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Instrument cluster displayMalfunction and
indicator lamps in the
instrument cluster ....................226
On-board diagnostic system
Check engine malfunction
indicator lamp .............................226
Brake warning lamp ..................227
Supplemental restraint system
(SRS) indicator lamp ..................228
Fuel reserve and fuel cap
placement warning ....................228
Electronic stability program
(ESP) — warning lamp ...............229
BAS/ESP malfunction
indicator lamp .............................229
ABS malfunction
indicator lamp .............................229Telescoping steering column –
indicator lamp ............................ 230
Seat belt warning lamp ............. 230
Malfunction and indicator lamps in
the center console .................... 230
AIRBAG OFF
indicator lamp ............................ 230
Malfunction and warning
messages in the
multifunction display .............. 231
DISPLAY DEFECTIVE
(engine control unit) ................. 232
DISPLAY DEFECTIVE
(several systems) ....................... 232
BATTERY/ALTERNATOR .......... 233
ABS-SYSTEM .............................. 234
BRAKE ASSIST ........................... 234
BRAKE LINING WEAR .............. 235
BRAKE FLUID ............................ 235PARKING BRAKE .......................236
ENGINE FAN ...............................236
COOLANT
(coolant level) .............................237
COOLANT TEMP.
(coolant temperature) ................238
LIGHTING SYSTEM ....................239
LIGHT SENSOR ...........................240
STEER. WHEEL ADJUST. ...........240
ENGINE OIL LEVEL ................... 241
ELEC. STABIL. PROG.
(Electronic stability
program) ......................................242
REMOVE KEY .............................242
WASHER FLUID .........................243
TELE AID .....................................244

226 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Malfunction and indicator lamps
in the instrument cluster
General information:
If a bulb in the instrument cluster fails to light up
during the bulb self-check when turning the electronic
key in steering lock to position 2, have it checked and
replaced if necessary.
On-board diagnostic system
Check engine malfunction indicator lamp
Engine malfunction indicator lamp. If the
“CHECK ENGINE” malfunction indicator
lamp comes on when the engine is running,
it indicates a malfunction of the fuel management
system, emission control system, systems which impact
emissions, or the fuel cap is not closed tight (check the
fuel cap). If the “CHECK ENGINE” lamp is illuminated
continuously and the vehicle is driving normally, you
may still drive the vehicle, however, in all cases, we
recommend that you have the system checked at your
authorized Mercedes-Benz Center as soon as possible.
If the “CHECK ENGINE” lamp comes on continuously
and / or the vehicle is not driving normally (e.g.
malfunction of the fuel management system or running out of fuel), serious damage can occur to the emission
system. Please contact your authorized Mercedes-Benz
Center immediately.
The Sequential Multiport Fuel Injection (SFI) control
module monitors emission control components that
either provide input signals to or receive output signals
from the control module. Malfunctions resulting from
interruptions or failure of any of these components are
indicated by the “CHECK ENGINE” malfunction
indicator lamp in the instrument cluster and are
simultaneously stored in the SFI control module.
If the “CHECK ENGINE” malfunction indicator lamp
comes on, have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
With some exceptions, the control module switches off
the “CHECK ENGINE” malfunction indicator lamp if the
condition, causing the lamp to come on, no longer exists
during three consecutive cycles. See also page 228 for
fuel cap placement warning.
An on-board diagnostic connector is located in the
passenger compartment near to the parking brake
pedal, allowing the accurate identification of system
malfunctions through the readout of diagnostic trouble
codes.
CHECK
ENGINE

229 Malfunction and indicator lamps
Te ch n ica 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 steering lock position 2.
It should go out with engine running.
See page 217 if the warning lamp lights up or f lashes
when the vehicle is moving.
BAS / ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP
is combined with that of the BAS.
The yellow BAS/ESP malfunction indicator
lamp in the instrument cluster comes on with the
electronic key in steering lock position 2. It should go
out with the engine running.
If the BAS/ESP malfunction indicator lamp remains
illuminated with the engine running, see page 213 for
notes on the brake assist (BAS) and page 217 for notes
on the electronic stability program (ESP).ABS malfunction indicator lamp
The ABS malfunction indicator lamp in the
instrument cluster comes on with the
electronic key in steering lock position 2 and
should go out with the engine running.
When the ABS malfunction indicator lamp symbol and
warning in the instrument cluster remains illuminated
while the engine is running, it indicates that the ABS
has detected a malfunction and has switched off. In this
case, the brake system functions in the usual manner,
but without antilock assistance.
With the ABS malfunctioning, the BAS and ESP are also
switched off. Both malfunction indicator lamps come on
with the engine running.
If the charging voltage falls below 10 volts, the
malfunction indicator lamp comes on and the ABS is
switched off. When the voltage is above this value again,
the malfunction indicator lamp should go out and the
ABS is operational.
Have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
See page 215 for notes on the antilock brake system
(ABS).
BAS
ESP
ABS