2001 MERCEDES-BENZ CLK430 sensor

4 Contents
Malfunction and indicator lamps
in the center console ................232
AIRBAG OFF
indicator lamp .............................232
Malfunction and warning
messages in the
multifunction display ...............233
DISPLAY DEFECTIVE
(engine control unit) ..................234
DISPLAY DEFECTIVE
(several systems) ........................234
BATTERY/ALTERNATOR ...........235
ABS-SYSTEM ...............................236
BRAKE ASSIST ...........................236
BRAKE LINING WEAR ..............237
BRAKE FLUID .............................237
PARKING BRAKE .......................238
ENGINE FAN ...............................238
COOLANT
(coolant level) .............................239
COOLANT TEMP.
(coolant temperature) ................240
LIGHTING SYSTEM .................... 241LIGHT SENSOR .......................... 242
STEER. WHEEL ADJUST. .......... 242
ENGINE OIL LEVEL ................... 243
ELEC. STABIL. PROGRAM.
(Electronic stability
program) ..................................... 244
REMOVE KEY ............................. 244
WASHER FLUID ......................... 245
TELE AID ..................................... 246
Practical hintsFirst aid kit ..................................... 248
Shelf below rear window .............. 248
Stowing things in
the vehicle ................................. 248
Fuses ............................................... 249
Hood ................................................ 251
Checking engine oil level ............. 253
Automatic transmission
fluid level ................................... 254
Coolant level ................................... 254
Adding coolant ........................... 255Windshield washer / headlamp
cleaning system ........................256
Windshield and
headlamp washer
fluid mixing ratio .......................256
Spare wheel, vehicle tools,
storage compartment ................257
Vehicle jack .....................................258
Wheels .............................................259
Tire replacement ........................259
Rotating wheels ..........................260
Spare wheel .................................... 261
Changing wheels ...........................262
Tire inflation pressure ..................267
Battery .............................................268
Jump starting ..................................270
Towing the vehicle .........................272
Transmission selector lever,
manually unlocking ................... 274
Exterior lamps ................................275
Headlamp assembly ................... 276
Taillamp assemblies ..................278
Adjusting headlamp aim ...............280

68 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
3Side impact airbag
The side impact airbags are located in the doors.
The most effective occupant restraint system yet
developed for use in production vehicles is the seat belt.
In some cases, however, the protective effect of a seat
belt can be further enhanced by an airbag.
In conjunction with wearing the seat belts, the driver
and front passenger airbags can provide increased
protection for the driver and front passenger in certain
frontal impacts exceeding preset thresholds. Door mounted side impact airbags can provide increased
protection to belted front passengers on the impacted
side of the vehicle in side impacts exceeding its preset
threshold.
Important!
The operational readiness of the airbag system is
verified by the indicator lamp “SRS” in the instrument
cluster when turning the electronic key in steering lock
to position 1 or 2. If no faul t is detected , t he l amp will g o
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. If the lamp does not
come on at all or if it fails to extinguish after
approximately 4 seconds or if it comes on thereafter,
a malfunction in the system has been detected.
The following system components are monitored or
undergo a self-check: crash-sensor(s), airbag ignition
circuits, front seat belt buckles, emergency tensioning
retractors, seat sensor.
3
P91.60-2122-26

69 Restraint systems
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Initially, when the electronic key is turned from steering
lock position 0 to positions 1 or 2, malfunctions in the
crash-sensor are detected and indicated (the “SRS”
indicator lamp stays on longer than 4 seconds or does
not come on).
Have the system checked at your authorized
Mercedes-Benz Center immediately.
In the operational mode, after the indicator lamp has
gone out following the initial check, interruptions or
short circuits in the airbag ignition circuit and in the
driver and front passenger seat belt buckle harnesses,
and low voltage in the entire system are detected and
indicated.Front airbags
The driver and front passenger front airbags are
designed to activate only in certain frontal impacts
exceeding a preset threshold.
The front passenger airbag deploys only if the front
passenger seat is occupied and the indicator lamp on
the center console is not illuminated.
Note:
Heavy objects on the front passenger seat can appear to
the “SRS” to indicate the presence of an occupant in
that seat which causes the passenger front airbag to
deploy in a crash exceeding the appropriate threshold.
Wa r n i n g !
In t he event a malfu nction of th e “SRS” is indic ated
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.

79 Rear view mirrors
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Inside rear view mirror
Manually adjust the mirror.
Use your inside mirror to determine the size and
distance of objects seen in the passenger side convex
mirror.
Antiglare night position
With the electronic key in steering lock position 2, the
mirror reflection brightness responds to changes in
light sensitivity.
With gear selector lever in position “R”, or with the
interior lamp switched on, the mirror brightness does
not respond to changes in light sensitivity.Note:
The automatic antiglare function does not react, if
incoming light is not aimed directly at sensors in the
mirror.
Wa r n i n g !
In the case of an accident liquid electrolyte may
escape the mirror housing when the mirror glass
breaks.Electrolyte has an irritating effect. Do not allow the
liquid come into contact with eyes, skin, clothing,
or respiratory system. In cases it does, imm edi ately
flush affected area with water, and seek medical
help if necessary.

88 Instrument cluster
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Coolant temperature gauge (3)
During severe operating conditions and stop-and-go city
traf f ic, th e coola nt tempera ture may rise close to th e red
marking.
The engine should not be operated with the coolant
temperature in the red zone. Doing so may cause
serious engine damage which is not covered by the
Mercedes-Benz Limited Warranty.Outside temperature indicator (5)
The temperature sensor is located in the front bumper
area. Due to its location, the sensor can be affected by
road or engine heat during idling or slow driving. This
means that the accuracy of the displayed temperature
can only be verified by comparison to a thermometer
placed next to the sensor, not by comparison to external
displays (e.g. bank signs etc.).
Adaptation to ambient temperature takes place in steps
and depends on the prevailing driving conditions (stop-
and-go or moderate, constant driving) and amount of
temperature change.
Wa r n i n g !
• Driving when your engine is badly overheated
can cause some fluids which may have leaked
into the engine compartment to catch fire. You
could be seriously burned.• Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine if
you see or hear steam coming from it.Turn off the engine, get out of the vehicle and do
not stand near the vehicle until it cools down.
Wa r n i n g !
The outside temperature indicator is not designed
to serve as an Ice-Warning Device and is therefore
unsuitable for that purpose. Indicated
temperatures just above the freezing point do not
guarantee that the road surface is free of ice.

120 Combination switch
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
6Control for windshield wiper/washer system:
Push briefly for single wipe without adding washer
fluid (use only when windshield is wet).
Push past detent and hold to activate wiper and
washer.
Notes:
The windshield washer reservoir, hoses and nozzles are
automatically heated.
See page 256 for re fill ing windshield wa sh er / h ead lamp
cleaning system.7Windshield wiper
0Wiper off
I Intermittent wiping
(vehicles with rain sensor: One initial wipe,
pauses between wipes are automatically
controlled by a rain sensor monitoring the
wetness of the windshield.)
Notes:
With switch in this position, one wipe occurs
when turning the electronic main key in steering
lock from position 0.
Vehicles with rain sensor:
Do not leave in inte rmittent se tting when vehicle
is taken to an automatic car wash or during
windshield cleaning. Wiper will operate in
presence of water spray at windshield, and wiper
may be damaged as a result.
II Normal wiper speed
III Fast wiper speed
P54.25-2033-26
6
7

178 Catalytic converter
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Catalytic converter
Your Mercedes-Benz is equipped with monolithic type
catalytic converters, an important element in
conjunction with the oxygen sensors to achieve
substantial control of the pollutants in the exhaust
emissions. Keep your vehicle in proper operating
condition by following our recommended maintenance
instructions as outlined in your Service Booklet.Caution!
To prevent damage to the catalytic converters, use only
premium unleaded gasoline in this vehicle.
Any noticeable irregularities in engine operation should
be repaired promptly. Otherwise, excessive unburned
fuel may reach the catalytic converter causing it to
overheat, which could start a fire.
Wa r n i n g !
As with any vehicle, do not idle, park or operate
this vehicle in areas where combustible materials
such as grass, hay or leaves can come into contact
with the hot exhaust system, as these materials
could be ignited and cause a vehicle fire.

227 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 ....................228
On-board diagnostic system
Check engine malfunction
indicator lamp .............................228
Brake warning lamp ..................229
Supplemental restraint
system (SRS)
indicator lamp .............................230
Fuel reserve and fuel cap
placement warning ....................230
Electronic stability program
(ESP) — warning lamp ............... 231
BAS/ESP malfunction
indicator lamp ............................. 231ABS malfunction
indicator lamp ............................ 231
Telescoping steering column –
indicator lamp ............................ 232
Seat belt warning lamp ............. 232
Malfunction and indicator lamps
in the center console ............... 232
AIRBAG OFF
indicator lamp ............................ 232
Malfunction and warning
messages in the
multifunction display .............. 233
DISPLAY DEFECTIVE
(engine control unit) ................. 234
DISPLAY DEFECTIVE
(several systems) ....................... 234
BATTERY/ALTERNATOR .......... 235
ABS-SYSTEM .............................. 236
BRAKE ASSIST ........................... 236BRAKE LINING WEAR ..............237
BRAKE FLUID .............................237
PARKING BRAKE .......................238
ENGINE FAN ...............................238
COOLANT
(coolant level) .............................239
COOLANT TEMP.
(coolant temperature) ................240
LIGHTING SYSTEM .................... 241
LIGHT SENSOR ...........................242
STEER. WHEEL ADJUST. ...........242
ENGINE OIL LEVEL ...................243
ELEC. STABIL. PROGRAM.
(Electronic stability
program) ......................................244
REMOVE KEY .............................244
WASHER FLUID .........................245
TELE AID .....................................246