2004 MERCEDES-BENZ CLK55AMG CABRIOLET coolant level

ContentsLoading .............................................. 245
Ski sack* ...................................... 245
Loading instructions ..................... 249
Useful features .................................. 250
Interior storage spaces ................ 250
Ashtrays ....................................... 253
Cigarette lighter ........................... 254
Floormats* ................................... 255
Telephone*................................... 256
Tele Aid* ...................................... 257
Garage door opener ..................... 265
Operation......................................... 271
The first 1 000 miles (1 500 km)......... 272
Driving instructions............................ 273
Drive sensibly – save fuel ............. 273
Drinking and driving ..................... 273
Pedals .......................................... 273
Power assistance ......................... 273
Brakes .......................................... 274
Driving off .................................... 275
Parking ......................................... 275
Tires ............................................. 276
Hydroplaning ................................ 277
Tire traction.................................. 277
Tire speed rating .......................... 278
Winter driving instructions ........... 279
Standing water ............................. 280
Passenger compartment .............. 280
Driving abroad.............................. 280
Control and operation
of radio transmitters .................... 281
Catalytic converter ....................... 281
Emission control .......................... 282
Coolant temperature .................... 283At the gas station .............................. 284
Refueling ...................................... 284
Check regularly and
before a long trip ......................... 286
Engine compartment ......................... 287
Hood ............................................ 287
Engine oil ..................................... 288
Transmission fluid level ................ 291
Coolant ........................................ 292
Battery ......................................... 294
Windshield washer system and
headlamp cleaning system*......... 295
Tires and wheels................................ 296
Important guidelines .................... 297
Life of tires................................... 297
Direction of rotation..................... 297
Checking tire inflation pressure ... 298
Rotating wheels ........................... 299
Winter driving .................................... 300
Winter tires .................................. 300
Block heater*............................... 301
Snow chains................................. 301

51 Getting started
Driving
Problems while driving
The engine runs erratically and misfires

An ignition cable may be damaged.


The engine electronics may not be op-
erating properly.


Unburned gasoline may have entered
the catalytic converter and damaged it.

Give very little gas.

Have the problem repaired by an au-
thorized Mercedes-Benz Center as
soon as possible.The coolant temperature is over 248°F
(120°C)
The coolant is too hot and is no longer
cooling the engine.

Stop the vehicle as soon as possible
and turn off the engine. Allow engine
and coolant to cool.

Check the coolant level and add cool-
ant if necessary (
page 292).In case of accident
If the vehicle is leaking gasoline:

Do not start the engine under any cir-
cumstances.

Notify local fire and/or police authori-
ties.
If the extent of the damage cannot be de-
termined:

Notify an authorized Mercedes-Benz
Center.
If no damage can be determined on the


major assemblies


fuel system


engine mount

Start the engine in the usual manner.

182 Controls in detailAutomatic climate controlDeactivating
Press button° (
page 173).
The indicator lamp on button°
goes off.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage dropsRear passenger compartment adjust-
able air vents
1Thumbwheel for center air vents with
adjustable booster blower
2Left center air vent
3Right center air vent
To open center air vents and to adjust the
booster blower:
Turn thumbwheel1.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting1 regardless of the air
distribution control setting.
iThe booster blower allows airflow
speed to the rear passenger compart-
ment to be increased at four different
levels.
The temperature at the air vents for
rear passenger compartment2
and3 is the same as at the dashboard
center air vents.

286 OperationAt the gas stationCheck regularly and before a long trip
1Coolant level
More information on coolant can be
found in the “Operation” section on
(
page 292).
2Brake fluid (fuse box cover removed)
Removing fuse box cover (
page 395)
3Windshield washer and headlamp
cleaning system
More information on refilling the reser-
voir can be found in the “Operation”
section on (
page 295).Engine oil level
More information on engine oil
(
page 288).
Opening hood (
page 287).
Vehicle lighting
Check function and cleanliness.For more
information on replacing light bulbs, see
“Replacing bulbs” (page 372).
Exterior lamp switch (page 47)
Tire inflation pressure
More information on tire inflate pressure
(
page 298).
!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks immediately. Noti-
fy an authorized Mercedes-Benz Center
immediately. Do not add brake fluid as
this will not solve the problem. For
more information, see also “Practical
hints” (
page 313).

292 OperationEngine compartmentCoolant
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
The coolant expansion tank is located on
the passenger side of the engine compart-
ment.
1Coolant expansion tank

Using a rag, turn the cap slowly approx-
imately one half turn to the left to re-
lease any excess pressure.

Continue turning the cap to the left and
remove it.
Warning!
G
In order to avoid any possibly serious burns:

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 indi-
cates 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 the cap approx-
imately
1⁄2 turn to relieve excess pres-
sure. If opened immediately, scalding
hot fluid and steam will be blown out un-
der pressure.


Do not spill antifreeze on hot engine
parts. Antifreeze contains ethylene gly-
col which may burn if it comes into con-
tact with hot engine parts.

293 Operation
Engine compartment
The coolant level is correct if the level

for cold coolant: reaches the black top
part of the reservoir


for warm coolant: is approx. 0.6 in
(1.5 cm) higher

Add coolant as required.

Replace and tighten cap.
More information on coolant can be found
in the “Technical data” section
(
page 414).

315 Practical hints
What to do if …?
Problem
Possible cause
Suggested solution
•
The red coolant warning lamp
comes on when the engine is
running.
There is insufficient coolant in the reservoir.

Add coolant to prevent engine from
overheating (
page 292).
If this warning lamp comes on frequently,
there is a leak in the cooling system.

Have the cooling system checked.
If the coolant level is correct, the electric ra-
diator fan may be broken.

If the coolant temperature is below
257 °F (125 °C), you can continue
driving to the nearest authorized
Mercedes-Benz Center.

Avoid high engine loads (e.g. driving
uphill) and stop-and-go driving.
•
The red coolant warning lamp
comes on while driving and you
hear a warning sound.
The coolant temperature has exceeded
257 °F (125 °C).

Stop as soon as possible and allow
the engine and coolant to cool down.
Warning!
G
Driving when your engine is badly overheat-
ed 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 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 the
engine has cooled down.

328 Practical hintsWhat to do if …?Display symbol
Display message
Possible cause
Possible solution
?
Visit workshop!
There may be a malfunction in the

fuel injection system


ignition system


exhaust system


fuel system

Have the measuring system checked
by an authorized Mercedes-Benz Cen-
ter.
B
Coolant
Check level
The coolant level is too low.

Add coolant (
page 292).

If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Center.
Warning!
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.
!Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat, causing major en-
gine damage.