2001 MERCEDES-BENZ CLK CABRIOLET check engine

3 Contents
DrivingControl and operation of
radio transmitters ..................... 178
The first 1 000 miles
(1 500 km) ................................. 179
Maintenance ................................... 179
Catalytic converter ........................ 180
Emission control ............................ 181
Tele Aid ........................................... 182
Steering lock ................................... 192
Starting and turning off
the engine .................................. 194
Automatic transmission ............... 195
Parking brake .................................204
Driving instructions ......................205
Drive sensibly – save fuel .........205
Drinking and driving .................205
Pedals ...........................................205
Power assistance ........................206Brakes .......................................... 206
Driving off ................................... 207
Parking ........................................ 207
Tires ............................................. 208
Snow chains ................................210
Winter driving instructions ...... 211
Deep water ...................................212
Passenger compartment ............213
Traveling abroad .........................213
Cruise control .................................214
Brake assist system
(BAS) ...........................................216
Antilock brake system
(ABS) ...........................................218
Electronic stability program
(ESP) ........................................... 220
What you should know
at the gas station ...................... 224
Check regularly and
before a long trip ...................... 226
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 ............................. 231
ABS malfunction
indicator lamp ............................. 231
Telescoping steering column –
indicator lamp .............................232
Seat belt warning lamp .............232

4 Contents
Malfunction and indicator
lamps in the
center console ...........................233
AIRBAG OFF
indicator lamp .............................233
Roll bar warning lamp ...............233
Malfunction and
warning messages in the
multifunction display ...............234
DISPLAY DEFECTIVE
(engine control unit) ..................235
DISPLAY DEFECTIVE
(several systems) ........................235
BATTERY/ALTERNATOR ...........236
ABS-SYSTEM ...............................237
BRAKE ASSIST ...........................237
BRAKE LINING WEAR ..............238
BRAKE FLUID .............................238PARKING BRAKE ....................... 239
ENGINE FAN ............................... 239
COOLANT
(coolant level) ............................. 240
COOLANT TEMP.
(coolant temperature) ............... 241
LIGHTING SYSTEM ................... 242
LIGHT SENSOR .......................... 243
STEER. WHEEL ADJUST. .......... 243
ENGINE OIL LEVEL ................... 244
ELEC. STABIL. PROG.
(Electronic stability
program) ..................................... 245
REMOVE KEY ............................. 245
WASHER FLUID ......................... 246
TELE AID ..................................... 247
Practical hintsFirst aid kit .....................................250
Shelf below rear window ..............250
Stowing things in
the vehicle ..................................250
Luggage cover .................................250
Fuses ................................................252
Hood .................................................254
Checking engine oil level .............256
Automatic transmission
fluid level ...................................257
Coolant level ...................................257
Adding coolant ...........................258
Windshield washer / headlamp
cleaning system ........................259
Windshield and headlamp
washer fluid mixing ratio .........259

27 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Start lock-out
Important!
Removing the electronic key from the steering lock
activates the start lock-out. The engine cannot be
started.
Inserting the electronic key in the steering lock
deactivates the start lock-out.
Note:
In case the engine cannot be started (vehicle’s battery is
in order), the system is not operational. Contact an
authorized Mercedes-Benz Center or call 1-800-FOR-
MERCedes (in the USA) or 1-800-387-0100 (in Canada).General notes on the central locking system
If the electronic key is inserted in the steering lock, the
vehicle cannot be locked or unlocked with the remote
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver of either door
handle. Check the batteries of the electronic main
key, see page 288, or synchronize the remote
control, see page 290.
•Use the mechanical key to unlock the driver’s door.
To start th e engine, insert t he el ectronic main key in
the steering lock. There could be a slight delay until
the electronic main key can be turned in the
steering lock.
Important!
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
steering lock or press buttonŒ or‹ on the
electronic main key.

53 Seats
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Switch for roll bar and head restraints, rear
The switch is located in the center console.
Turn electronic key in steering lock to position 2.
Press switch:
1Raise roll bar
2Lower roll bar
The lowering or raising procedure is immediately
interrupted by releasing the roll bar switch. With the engine running and the roll bar lowered, the
warning lamp in the roll bar switch will blink for
approx. 15 seconds. The blinking is reminding you to
raise the roll bar if the rear passenger seats are
occupied. See also page 233 for roll bar warning lamp.
Important!
The roll bar is intended to be a safety enhancement to
the other features designed into the vehicle. No system
in any vehicle can eliminate the possibility of serious
injury or fatality in an accident. Properly fastened seat
belts and child restraints must be used!
Notes:
If the warning lamp in the switch comes on, then a
malfunction has been detected. In this case, drive only
with the roll bar raised until the problem has been
corrected. Raise the roll bar by pressing the upper half
of the roll bar switch.
Have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
Items being transported in the rear passenger
compartment should be placed in such a manner as not
to affect the movement of the roll bar when being
raised.
P91.59-2001-26
12

84 Instrument cluster
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Indicator lamps in the instrument cluster
High beam
ABS malfunction, see page 231
Brake fluid low (except Canada),
see page 229
Parking brake engaged, see page 229
Brake fluid low (Canada only),
see page 229
Parking brake engaged, see page 229
BAS malfunction, see page 231
ESP malfunction, see page 231 and 245
ESP. Adjust driving to road condition,
see page 220
Fasten seat belts, see page 232Telescoping steering column not locked,
see page 232
SRS malfunction, see page 230
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. In all cases,
we recommend that you have the
malfunction checked as soon as possible,
see page 228.
Function indicator lamp on the center console
Front passenger airbag automatically
switched off, see page 64.
ABSBRAKEBAS
ESP
SRSCHECK
ENGINE

112 Engine oil level indicator
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Engine oil level indicator
To check the engine oil level, park vehicle on level
ground, with engine at normal operational temperature.
Check oil level approximately 5 minutes after stopping
the engine, allowing for the oil to return to the oil pan.Turn the electronic key in steering lock to position 2.
To call up the trip odometer and main odometer, press
button è or ÿ on the multifunction steering
wheel until the display appears. See page 92.
Press button j or k on the multifunction
steering wheel repeatedly until the “MEASUREMENT
CORRECT – ONLY IF VEH. LEVEL” engine oil level
indicator appears. This indicator is only a reminder.
Measurement can be cancelled by pressing button j
or k if the vehicle is not parked on level ground. An
incorrect reading will be recorded if you do not cancel
the measurement. Move the vehicle to level ground and
measure again.
The electronic key in steering lock is not in position 2 if
the “ENGINE OIL LEVEL – SWITCH ON IGNITION”
message appears.
The “ENGINE OIL LEVEL – MEASURING NOW”
message is displayed after approximately 3 seconds.

113 Engine oil level indicator
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index One of the following messages will subsequently appear
on the indicator:
“ENGINE OIL LEVEL – O.K.”
No oil needs to be added.
“ENGINE OIL LEVEL – ADD 1.0 QUART”
(Canada: 1.0 L)
“ENGINE OIL LEVEL – ADD 1.5 QUART”
(Canada: 1.5 L)
“ENGINE OIL LEVEL – ADD 2.0 QUART”
(Canada: 2.0 L)
See page 256 for instructions on adding engine oil.
“ENGINE OIL LEVEL – REDUCE OIL LEVEL”
Do not overfill the engine.
Excessive oil must be siphoned or drained off. It could
cause damage to the engine and catalytic converter not
covered by the Mercedes-Benz Limited Warranty.
The message “PERF. SERV. ON TIME” (perform service
[engine oil level check] on time) will be displayed if a
proper oil level check cannot be performed. The engine
oil level check can be repeated after a short time.Perform the engine oil level check with the dipstick, if it
cannot be completed via the multifunction display.
See page 256.
In this case we recommend that you have the system
checked at a Mercedes-Benz Center.
Note:
See malfunction and warning messages on page 234
and page 244 if an engine oil level indicator appears on
the multifunction display when the engine is running.
The engine oil level cannot be checked while the engine
is running. The “ENGINE OIL LEVEL – NOT WHEN
ENGINE ON” message will appear.
Engine oil consumption
Engine oil consumption checks should only be made
after the break-in period. During the break-in period,
higher oil consumption may be noticed and is normal.
Frequent driving at high engine speeds results in
increased consumption.

169 Soft top
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index If the indicator lamp in the soft top switch blinks slowly
while activating the switch,
•the battery voltage may be insufficient – start
engine and let it run while activating switch,
•the system may be overheated (for example after
lowering or raising the soft top approx. 5
consecutive times) – after approx. 10 minutes the
soft top switch may be activated again.
If indicator lamp in the soft top switch blinks rapidly
while activating the switch,
•the trunk lid and/or the luggage cover may be open,
and need to be closed,
•the soft top is still locked during the opening
procedure and needs to be unlocked,
•the opening/closing procedure is interrupted.
In this case the soft top needs to be synchronized.
Turn electronic key in steering lock back to
position 0, and then to position 2. Activate soft top
sw itch again. Th e sof t top should now be opera tiona l
again.
If the indicator lamp continues to blink, raise the soft
top manually, see page 291. Have the system checked at your authorized
Mercedes-Benz Center as soon as possible.
Notes:
If the roll bar was raised automatically, the process of
raising or lowering the soft top will take somewhat
longer, as the roll bar must first be lowered.
Whenever possible, park vehicle in the shade as
continuous exposure to sun rays can prematurely
deteriorate the soft top material.
The soft top may become moldy and receive permanent
creases if it is kept in the storage compartment for an
extended period.
Therefore, we recommend raising and airing it
thoroughly with the side windows open (do not expose
it to the sun) at regular intervals during the wet and
cold seasons.
To prevent damage, the soft top must be dry and clean
before lowering it into the storage compartment. There
is the possibility of sharp-edged dirt particles damaging
the soft top or scratching the rear window.