engine oil MERCEDES-BENZ C COUPE 2005 CL203 Owner's Manual

ContentsPanorama roof with power
tilt/sliding panel* .............................. 241
Opening and closing the roller
sunblinds for the panorama roof
with power tilt/sliding panel ........ 241
Opening and closing the panorama
roof with power tilt/sliding panel . 242
Synchronizing the panorama roof
with power tilt/sliding panel and
the roller sunblinds....................... 246
Driving systems ................................. 247
Cruise control............................... 247
Loading .............................................. 250
Roof rack* .................................... 250
Split rear bench seat .................... 250
Luggage cover .............................. 252
Loading instructions ..................... 252
Cargo tie-down rings .................... 253
Useful features .................................. 254
Storage compartments................. 254
Ashtrays ....................................... 257
Cigarette lighter ........................... 259
Electrical outlet ............................ 260
Telephone*................................... 260
Tele Aid* ...................................... 261
Garage door opener* ................... 269
Operation......................................... 275
The first 1000 miles (1500km) .......... 276
Driving instructions............................ 277
Drive sensibly – save fuel ............. 277
Drinking and driving ..................... 277
Pedals .......................................... 277
Power assistance ......................... 277
Brakes .......................................... 278
Driving off .................................... 279
Parking ......................................... 279
Tires ............................................. 280
Hydroplaning ................................ 281
Tire traction.................................. 281
Tire speed rating .......................... 282
Winter driving instructions ........... 283
Standing water ............................. 284
Passenger compartment .............. 284
Driving abroad.............................. 284
Control and operation of radio
transmitter ................................... 284
Catalytic converter ....................... 285
Emission control .......................... 286
Coolant temperature .................... 286At the gas station .............................. 288
Refueling ...................................... 288
Check regularly and before a
long trip ....................................... 290
Engine compartment ......................... 291
Hood ............................................ 291
Engine oil ..................................... 292
Transmission fluid level ................ 296
Coolant level ................................ 296
Battery ......................................... 297
Windshield washer system and
headlamp cleaning system*......... 299
Tires and wheels................................ 300
Important guidelines .................... 300
Tire care and maintenance........... 301
Direction of rotation..................... 303
Loading the vehicle ...................... 303
Recommended tire inflation
pressure ....................................... 309
Checking tire inflation pressure ... 311
Tire labeling ................................. 313
Load identification ....................... 317
DOT, Tire Identification Number
(TIN) ............................................. 318
Maximum tire load ....................... 319
Maximum tire inflation pressure .. 320

ContentsTechnical data.................................. 413
Parts service ...................................... 414
Warranty coverage ............................. 415
Loss of Service and Warranty
Information Booklet...................... 415
Identification labels............................ 416
Layout of poly-V-belt drive ................. 417
C 230 Kompressor ....................... 417
C 320 ........................................... 417
Engine ................................................ 418
Rims and Tires ................................... 419
Same size tires ............................. 420
Mixed size tires ............................ 421
Spare wheel ................................. 422
Electrical system................................ 423
Main Dimensions ............................... 424
Weights .............................................. 425Fuels, coolants, lubricants, etc. ......... 426
Capacities .................................... 426
Engine oils.................................... 428
Engine oil additives ...................... 428
Air conditioning refrigerant .......... 428
Brake fluid .................................... 428
Premium unleaded gasoline ......... 429
Fuel requirements ........................ 429
Gasoline additives ........................ 430
Flexible Fuel Vehicles ................... 431
Coolants....................................... 432
Windshield washer system and
headlamp cleaning system ........... 435
Technical terms............................... 437Index................................................. 443

127 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard
display
AUDIO
NAV*
Vehicle status
message memory
Settings
Trip computer
Telephone*
(page 128)
(page 129)
(page 131)
(page 132)
(page 133)
(page 151)
(page 153)
Commands/submenusDigital
speedometer or
outside tempera-
ture
Select radio sta-
tion
Activate route
guidance
Call up vehicle mal-
function, warning
and system status
messages stored
in memory
Reset to factory
settings
Fuel consump-
tion statistics af-
ter start
Load phone
book
Call up mainte-
nance service
display
Select satellite
radio station*
(USA only)
Instrument clus-
ter submenu
Fuel consump-
tion statistics
since the last
reset
Search for name
in phone book
Check engine oil
level
Operate the
CD player*
Time/Date
submenu
Call up range
Lighting
submenuVehicle
submenuConvenience
submenu

128 Controls in detailControl system
Standard display menu
In the standard display, the main odometer
and the trip odometer are shown in the
multifunction display.
1Trip odometer
2Main odometerIf you see another display, press
buttonè orÿ repeatedly until the
standard display appears.
You can select the functions in the
standard display menu with buttonk
orj.
The following functions are available:
iThe headings used in the menus table
are designed to facilitate navigation
within the system and are not neces-
sarily identical to those shown in the
control system displays.
The first function displayed in each
menu will automatically show you
which part of the system you are in.
Function
Page
Display digital speedometer or
outside temperature
129
Call up maintenance service
display
330
Check engine oil level
293

290 OperationAt the gas stationCheck regularly and before a long trip
1Coolant level
2Brake fluid (fuse box cover removed)
3Windshield washer and headlamp
cleaning system*Brake fluid
Remove fuse box cover before checking
brake fluid (
page 410).
Engine oil level
For more information on engine oil, see
“Engine oil” (page 292).
Opening hood, see (
page 291).Coolant
For normal replenishing, use water (pota-
ble water quality). For more information on
coolant, see “Coolant level” (
page 296)
Vehicle lighting
Check function and cleanliness. For infor-
mation on replacing light bulbs, see “Re-
placing bulbs” (
page 384).
Exterior lamp switch, see (
page 110).
Tire inflation pressure
For information on tire inflation pressure,
see “Checking tire inflation pressure”
(
page 311).
Windshield washer and headlamp
cleaning system*
For more information on filling up the
washer reservoir, see “Windshield washer
system and headlamp cleaning system*”
(page 299).
!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 “Practical Hints”
(page 341).

292 OperationEngine compartment
Closing the hood
Let the hood drop from a height of
approximately 1 ft (30 cm).
The hood will lock audibly.

Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the headlamps, then it is not
properly closed. Open it again and let it
drop with somewhat greater force.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when

the vehicle is new


the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
If you see flames or smoke coming from the
engine compartment, or if the coolant tem-
perature display 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 the fire department.Warning!
G
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, diagnos-
tic socket) of the ignition system

with the engine running


while starting the engine


if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz may
cause damage not covered by the
Mercedes-Benz Limited Warranty.
More information on this subject is
available at any Mercedes-Benz
Center.


293 Operation
Engine compartment
Checking engine oil level with the
control system
When checking the oil level

the vehicle must be parked on level
ground.


with the engine at operating tempera-
ture, the vehicle must have been
stationary for at least five minutes with
the engine turned off.


with the engine not at operating tem-
perature yet, the vehicle must have
been stationary for at least 30 minutes
with the engine turned off.
To check the engine oil level via the
multifunction display, do the following:

Switch on the ignition (
page 33).
The standard display (
page 123) should
appear in the multifunction display.

Press buttonk orj on the
steering wheel until the following
message is seen in the multifunction
display:One of the following messages will
subsequently appear in the indicator:


Engine oil level
OK


Add 1.0 qt engine oil
for max. oil level(Canada:
1.0 l
)


Add 1.5 qts engine oil
for max. oil level(Canada:
1.5 l
)


Add 2.0 qts engine oil
for max. oil level(Canada:
2.0 l
)

If necessary, add engine oil.
For adding engine oil, see (
page 294).
For more information on engine oil, see
“Technical data” section (
page 426) and
(
page 428).
Other display messages
If the SmartKey is not turned to position2
in the starter switch, the following
message will appear:
Switch ignition on to
check engine oil level
Switch on the ignition (
page 33).
iIf you want to interrupt the checking
procedure, press thek orj
button on the multifunction steering
wheel.

294 OperationEngine compartmentIf you see the message:Observe waiting time
If engine is at operating temperature,
wait five minutes before repeating
check procedure.

If engine is not at operating tempera-
ture yet, wait 30 minutes before
repeating check procedure.
If you see the message:
Engine oil level
Not when engine on
Turn off the engine.

If the engine is at operating tempera-
ture, wait five minutes before checking
oil.

If the engine is not at operating temper-
ature yet, you must wait 30 minutes
before checking oil.If there is excess engine oil with the engine
at normal operating temperature, the
following message will appear:
Engine oil level
Reduce oil level
Have excess oil siphoned or drained
off. Contact an authorized
Mercedes-Benz Center.
For more information on messages in the
display concerning engine oil, see “Practi-
cal hints” (
page 363).Adding engine oil
!Excess 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.
!Only use approved engine oils and oil
filters required for vehicles with
Maintenance System (U.S. vehicles) or
FSS (Canada vehicles). For a listing of
approved engine oils and oil filters,
refer to the Factory Approved Service
Products pamphlet in your vehicle
literature portfolio, or contact an
authorized Mercedes-Benz Center.
Using engine oils and oil filters of spec-
ification other than those expressly
required for the Maintenance System
(U.S. vehicles) or FSS (Canada vehi-
cles), or changing of oil and oil filter at
change intervals longer than those
called for by the Maintenance System
(U.S. vehicles) or FSS (Canada vehi-
cles) will result in engine damage not
covered by the Mercedes-Benz Limited
Warranty.

295 Operation
Engine compartment
C 230 Kompressor1 Filler cap
Unscrew filler cap1 from filler neck.

Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.

Screw filler cap1 back on filler neck.
C3201Filler cap
Unscrew filler cap1 from filler neck.

Add engine oil as required. Be careful
not to overfill with oil.Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.

Screw filler cap1 back on filler neck.
For more information on engine oil, see
“Technical data” section (
page 426) and
(
page 428).
!Excess 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.
!Excess 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.

331 Operation
Maintenance
Clearing the maintenance service indicator
The maintenance service indicator is
automatically cleared

after ten seconds when you switch on
the ignition or when reaching the main-
tenance service threshold while driving


after 30 seconds, once the suggested
maintenance service term has passed
You can also clear it yourself.
1Reset button

Press reset button1 on the
instrument cluster.
Maintenance service term exceeded
If you have exceeded the suggested
maintenance service term, you will see the
following message in the multifunction
display:Service A exceeded by XX Days
Service A exceeded by XX Miles
(Km)
In addition, a signal sounds when the
message appears.
Any authorized Mercedes-Benz Center will
reset the maintenance service indicator
following a completed maintenance
service.Calling up the maintenance service
indicator
Switch on the ignition (
page 33).
The standard display of the control
system appears (
page 128).

Press buttonk orj on the
multifunction steering wheel until the
maintenance service indicator with the
service symbol9 or´ and the
service deadline appears in the
multifunction display.iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the maintenance
service indicator. To arrive at the true
maintenance service deadline, you will
need to subtract these days from the
days shown in the maintenance service
indicator.
Do not confuse the maintenance
service indicator with the engine oil
level indicator:.