coolant MERCEDES-BENZ CLK CABRIOLET 2001 A208 User Guide

239 Malfunction and warning messages
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cluster displayPractical hints Car care Index PA R K I N G B R A K E
Parking brake, see page 204.ENGINE FAN
1 The cooling fan for the coolant is faulty. Observe coolant
temperature gauge while driving, see page 86. Line 1 Line 2
PARKING BRAKE RELEASE BRAKE!Line 1 Line 2
ENGINE FAN VISIT WORKSHOP!
1

240 Malfunction and warning messages
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COOLANT (coolant level)
When this message appears while driving, the coolant
level has dropped below the required level. If no leaks
are noticeable and the engine temperature does not
increase, continue to drive to the nearest service station
and have coolant added to the coolant system.The low engine coolant level warning should not be
ignored. Extended driving with the symbol displayed
may cause serious engine damage not covered by the
Mercedes-Benz Limited Warranty.
In cases of major or frequent minor coolant loss, have
the cooling system checked at your authorized
Mercedes-Benz Center as soon as possible.
Notes:
Do not drive without coolant in the cooling system. The
engine will overheat causing major engine damage.
Monitor the coolant temperature gauge while driving.
See page 257 for instructions on adding coolant.
Line 1 Line 2
COOLANT CHECK LEVEL!
Wa r n i n g !
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which may
burn if it comes into contact with hot engine parts.
You can be seriously burned.

241 Malfunction and warning messages
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index COOLANT TEMP. (coolant temperature)
1 Observe coolant temperature gauge, see page 86.
Check coolant level, see page 257.
This may indicate that the poly-V-belt has broken. Should this
c on diti on oc cur, the po ly-V-belt m ust be r ep lac ed befor e c ont inui ng
to operate the vehicle. Otherwise, the engine will overheat due to
an inoperative water pump which may result in damage to the
engine. Do not continue to drive the vehicle with this message
displayed. Doing so could result in serious engine damage that is
not covered by the Mercedes-Benz Limited Warranty.
During severe operating conditions and stop-and-go city
traf f ic, th e coolant temperature 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.
Line 1 Line 2
COOLANT TEMP. VISIT WORKSHOP!
1
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.

249 Contents – Practical hints
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cluster displayPractical hintsCar care Index
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 .........................259Windshield and headlamp
washer fluid mixing ratio ........ 259
Spare wheel, vehicle tools,
storage compartment ............... 260
Vehicle jack .................................... 261
Wheels ............................................ 262
Tire replacement ....................... 262
Rotating wheels ......................... 263
Spare wheel .................................... 264
Changing wheels ........................... 266
Tire inflation pressure ..................271
Battery ............................................. 272
Jump starting ..................................274
Towing the vehicle .........................276
Exterior lamps ............................... 280
Headlamp assembly .................. 281
Taillamp assemblies .................. 283Adjusting headlamp aim ...............285
Changing batteries in
the electronic main key ...........288
Synchronizing
remote control ...........................290
Raising soft top manually ............. 291
Antenna ...........................................298
Manual release for
fuel filler flap .............................298
Trunk lamp .....................................299
Replacing wiper
blade insert ................................299

254 Engine compartment
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cluster displayPractical hintsCar care Index
Hood
Wa r n i n g !
To help prevent personal injury, stay clear of
moving parts wh en t he hood is open and th e engine
is running. Be sure the hood is properly closed
before driving. When closing hood, use extreme
caution not to catch hands or fingers.The radiator fan may continue to run for
approximately 30 seconds or even restart after the
engine has been turned off. Stay clear from fan
blades.
The engine is equipped with a transistorized
ignition system. Because of the high voltage it is
dangerous to touch any components (ignition coils,
spark plug sockets, diagnostic socket) of the
ignition system
• with the engine running,
• while starting the engine,
• if ignition is “on” and the engine is turned
manually.If you see flames, steam or smoke coming from the
engine compartment, or if the coolant temperature
gauge indicates that the engine is overheated, do
not open the hood. Move away from vehicle and do
not open the hood until the engine has cooled. If
necessary, call a fire department.

257 Engine compartment
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Automatic transmission fluid level
The transmission has a permanent fill of automatic
transmission fluid.
Regular automatic transmission fluid level checks and
changes are not required. For this reason the dipstick is
omitted.
If you notice fluid leaks or gear shifting malfunctions,
have your authorized Mercedes-Benz Center check the
transmission fluid level.Coolant level
To check the coolant level, the vehicle must be parked
on level ground and the engine stopped.
Check coolant level only when coolant is cold.
The coolant level should reach the black top part of the
reservoir.
P20.30-2032-26

258 Engine compartment
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cluster displayPractical hintsCar care Index
Adding coolant
If coola nt h as to be ad ded, a 50 / 50 m ixtu re of wa ter and
MB anticorrosion / antifreeze should be added.
The drain plugs for the cooling system are located on
the right side of the engine block and at the bottom of
the radiator.
Anticorrosion / antifreeze mixture, see page 322.
Wa r n i n g !
In order to avoid possible serious burns or injury:
• Use extreme caution when opening the hood if
there are any signs of steam or coolant leaking
from the cooling system, or if the coolant
temperature gauge indicates that the coolant is
overheated.• Do not remove pressure cap on coolant
reservoir if engine temperature is above 194°F
(90°C). Allow engine to cool down before
removing cap. The coolant reservoir contains
hot fluid and is under pressure.
• Using a rag, slowly open cap approximately
1/2 turn to relieve excess pressure. If opened
immediately, scalding hot fluid and steam will
be blown out under pressure.• Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which may
burn if it comes into contact with hot engine
parts.

302 Cleaning and care of the vehicle
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cluster displayPractical hintsCar careIndex
Cleaning and care of the vehicle
In operation, your vehicle is subjected to varying
external inf luences which, if gone unchecked, can
attack the paintwork as well as the underbody and
cause lasting damage.
Such damage is caused not only by extreme and varying
climatic conditions, but also by air polution, road salt,
tar, gravel and stone chipping. Grease and oil, fuel,
coolant, brake fluid, bird droppings, insects, tree resins
etc. should be removed immediately to avoid paint
damage. Frequent washing reduces and/or eliminates
the aggressiveness and potency of the above adverse
influences.More frequent washings are necessary to deal with
unfavorable conditions; for example, near the ocean, in
industrial areas (smoke, exhaust emissions), or during
winter operation.
You should check your vehicle from time to time for
stone chipping or other damage. Any damage should be
repaired as soon as possible to prevent the start of
corrosion.
In doing so, do not neglect the underside of the vehicle.
A prerequisite for a thorough check is a washing of the
underbody followed by a thorough inspection. Damaged
areas need to be reundercoated.
Your vehicle has been treated at the factory with a wax-
base ru stproof ing in th e body cavities w hich will la st for
the lifetime of the vehicle. Post-production treatment is
neither necessary nor recommended by Mercedes-Benz
because of the possibility of incompatibility between
materials used in the production process and others
applied later.
We have selected car-care products and compiled
recommendations which are specially matched to our
vehicles and which always reflect the latest technology.
You can obtain Mercedes-Benz approved car-care
products at your authorized Mercedes-Benz Center.
Wa r n i n g !
Many cleaning products can be hazardous. Some
are poisonous, others are flammable. Always follow
the instructions on the particular container.
Always open your vehicle’s doors or windows when
cleaning the inside.Never use fluids or solvents that are not designed
for cleaning your vehicle.

309 Contents – Technical data
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cluster displayPractical hints Car care Index
Technical dataSpare parts service ........................ 310
Warranty coverage ......................... 310
Identification labels ....................... 311
Layout of poly-V-belt drive ............ 312
Technical data ................................ 313
Fuels, coolants, lubricants etc. –
capacities ................................... 317
Engine oils ...................................... 319Engine oil additives .......................319
Air conditioner
refrigerant .................................. 319
Brake fluid ....................................... 319
Premium unleaded
gasoline ...................................... 320
Fuel requirements ........................ 320
Gasoline additives ......................... 321
Coolants .......................................... 321
Consumer information ................. 323

312 Technical data
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cluster displayPractical hints Car care Index
CLK 320 shown
3VIN, visible (lower edge of windshield)
4Engine number
5Body number and paintwork number
6Emission control label
7Information label, California version
Vacuum line routing for emission control systemLayout of poly-V-belt drive
1Automatic belt tensioner
2Crankshaft
3Air conditioner compressor
4Coolant pump
5Generator (alternator)
6Idler pulley
7Power steering pump
6
5
7
3
4