2008 MERCEDES-BENZ CLK350 check oil

Contents
At the gas station .............................. 320
Refueling ...................................... 320
Check regularly
and before a long trip................... 322
Engine compartment ......................... 323
Hood ............................................ 323
Engine oil ..................................... 325
Transmission fluid level ................ 327
Coolant ........................................ 328
Battery ......................................... 329
Windshield washer system and
headlamp cleaning system* ......... 330
Tires and wheels ................................ 331
Important guidelines .................... 331
Tire care and maintenance........... 332
Direction of rotation ..................... 334
Loading the vehicle ...................... 334
Recommended
tire inflation pressure ................... 339
Checking tire inflation pressure ... 341
MOExtended system* .................. 348
Tire labeling.................................. 348
Load identification ....................... 352
DOT,
Tire Identification Number (TIN) ... 353
Maximum tire load ....................... 354Maximum tire inflation pressure ... 355
Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 356
Tire ply material ............................ 357
Tire and loading terminology......... 358
Rotating tires ................................ 361
Winter driving ..................................... 362
Winter tires ................................... 362
Block heater (Canada only) ........... 363
Snow chains.................................. 363
Maintenance....................................... 364
Maintenance service
indicator message......................... 364
Clearing the maintenance
service indicator message ............ 365
Maintenance
service term exceeded.................. 365
Calling up the maintenance
service indicator display ............... 366
Resetting the maintenance
service indicator ........................... 366
Vehicle care........................................ 367
Cleaning and care of vehicle ......... 367
Practical hints.................................. 377
What to do if …? ................................. 378
Lamps in instrument cluster ......... 378
Lamp in center console ................ 390
Vehicle status messages
in the multifunction display .......... 392
Where will I find...? ............................. 421
First aid kit.................................... 421
Storage compartment
underneath the trunk floor............ 421
TIREFIT (CLK 63 AMG only)........... 422
Vehicle tool kit.............................. 422
Minispare wheel............................ 425
Spare wheel bolts ......................... 426
Unlocking/locking in an emergency .. 427
Unlocking the vehicle ................... 427
Locking the vehicle ....................... 428
Manually unlocking
the gear selector lever .................. 429
Opening/closing
in an emergency (Cabriolet) ............... 430
Operating roll bars manually ......... 430
Soft top emergency operation ...... 432

23 At a glance
Exterior view (Coupe)
ItemPage
1Trunk
Unlocking
Opening and closing
Minispare wheel
Vehicle tool kit
36
110,
112
425
423
2Rear lamps444
3Rear window, defrosting189
4Fuel filler flap
Refueling
Gasoline320
320
492
5Doors
Locking and unlocking
Opening
Locking/unlocking in an
emergency
36, 62,
100
109
427
ItemPage
6Exterior rear view mirror
Adjusting
Auto-dimming rear view
mirrors
47
186
7Tires and wheels
Checking tire inflation pres-
sure
Run Flat Indicator
(Canada only)
Tire Pressure Monitoring
(USA only)
General information
Vehicle tool kit
Minispare wheel
Flat tire331
341
342
344
331
422
425
452
8Towing
Installing towing eye bolt469
470
9Front lamps446
ItemPage
aHood, opening
Engine oil
Coolant
Battery323
325
328
329
bWindshield wipers
Wiper blades, replacing
Wiper blades, cleaning56
450
373
cWindshield
Front window, defrosting
Cleaning with wiper fluid
Cleaning
191,
201
57
373
dPower tilt/sliding sunroof
Opening and closing
Opening and closing in an
emergency
257
430

25 At a glance
Exterior view (Cabriolet)
ItemPage
1Trunk
Unlocking
Opening and closing
TIREFIT Kit (CLK 63 AMG)
Minispare wheel
Vehicle tool kit
103
110, 112
422
425
422
2Rear lamps448
3Rear window, defrosting189
4Fuel filler flap
Refueling
Gasoline320
320
492
5Doors
Locking and unlocking
Locking/unlocking in an
emergency
36, 62,
100
427
ItemPage
6Exterior rear view mirror
Adjusting
Auto-dimming rear view
mirrors
47
186
7Tires and wheels
Checking tire inflation
pressure
Run Flat Indicator
(Canada only)
Tire Pressure Monitoring
(USA only)
General information
TIREFIT Kit (CLK 63 AMG)
Vehicle tool kit
Minispare wheel
Flat tire331
341
342
344
331
452
422
458
452
8Towing
Installing towing eye bolt469
470
9Front lamps446
ItemPage
aHood, opening
Engine oil
Coolant
Battery323
325
328
329
bWindshield wipers
Wiper blades, replacing
Wiper blades, cleaning56
450
373
cWindshield
Front window, defrosting
Cleaning with wiper fluid
Cleaning
191, 201
57
373
dSoft top
Opening and closing
Opening and closing in
an emergency
Roll bars
Cleaning
260
420
82
370

105 Controls in detail
Locking and unlocking
Important notes on using KEYLESS-GO*

You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(
page 100).

You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the‹button).

Always carry the SmartKey with
KEYLESS-GO with you.

Never store the SmartKey with
KEYLESS-GO together with:

Electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO.

Metallic objects such as coins or
metal foil.
Doing so could impair the function of
the KEYLESS-GO system.

To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of the door to be
opened or the trunk lid.

In order to start the engine with the
SmartKey with KEYLESS-GO:

The SmartKey with KEYLESS-GO
must be located in the vehicle.

All doors must be closed.

The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.

If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle then cannot be locked or
the engine started via the KEYLESS-GO
system.

If the SmartKey with KEYLESS-GO is re-
moved from the vehicle (e.g. if passen-
ger exits the vehicle with the SmartKey
with KEYLESS-GO).
iYou can also open and close the windows
(
page 250) and the tilt/sliding sunroof*
(
page 257) or the soft top (page 263) using
the SmartKey with KEYLESS-GO.
!If you can no longer lock or unlock the vehi-
cle with the SmartKey with KEYLESS-GO, then
the batteries in the SmartKey with KEYLESS-GO
are discharged, the SmartKey with KEYLESS-GO
is malfunctioning or the vehicle battery is
drained.

Check the batteries in the SmartKey with
KEYLESS-GO (
page 108) and replace
them if necessary (
page 441).

Use the mechanical key to unlock the driv-
er’s door (
page 427) and the trunk
(
page 428).

Use the mechanical key to lock the driver’s
door (
page 428) and the trunk
(
page 118).

Have the vehicle battery and the battery con-
nections checked (
page 464).
If the SmartKey with KEYLESS-GO is malfunc-
tioning, contact an authorized Mercedes-Benz
Center.

322 Operation
At the gas station
Check regularly and before a long trip
Engine compartment (CLK 550, example)
1Coolant level
2Brake fluid (fuse box cover removed)
3Windshield washer and headlamp
cleaning system*Coolant
For normal replenishing, use water (pota-
ble water quality). For more information,
see “Coolant” (
page 328) and see “Fu-
els, coolants, lubricants, etc.”
(
page 489).
Brake fluid
Removing fuse box cover,
see (
page 473).Windshield washer and headlamp
cleaning system*
For more information on filling up the
washer reservoir, see “Windshield washer
system and headlamp cleaning system*”
(
page 330).
Engine oil level
For more information on engine oil, see
“Engine oil” (
page 325).
Vehicle lighting
Check function and cleanliness. For more
information on replacing light bulbs, see
“Replacing bulbs” (
page 443).
For more information, see “Exterior lamp
switch” (
page 55).
Tire inflation pressure
For more information, see “Checking tire
inflation pressure” (
page 341).
iOpening the hood, see (page 323).
!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. Notify an
authorized Mercedes-Benz Center immediately.
Do not add brake fluid as this will not solve the
problem. For more information, see also “Practi-
cal hints” (
page 380).

325 Operation
Engine compartment
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.Checking engine oil level
When checking the oil level

the vehicle must be parked on level
ground.

with the engine at operating tempera-
ture yet, the vehicle must have been
stationary for at least 5 minutes with
the engine turned off.

with the engine not at operating tem-
perature, the vehicle must have been
stationary for at least 30 minutes with
the engine turned off.CLK 350 / CLK 550
1Oil dipstick
2Upper (max) mark
3Lower (min) mark
!Do not use any special lubricant additives,
as these may damage the drive assemblies. Us-
ing 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.

326 Operation
Engine compartment
CLK 63 AMG
1Oil dipstick
2Upper (max) mark
3Lower (min) markTo check the engine oil level with the oil
dipstick, do the following:
Open the hood (page 323).
Pull out oil dipstick1.
Wipe oil dipstick1 clean.
Fully insert oil dipstick1 into the
dipstick guide tube.
Pull out oil dipstick1 again after
approximately 3 seconds to obtain ac-
curate reading.
The oil level is correct when it is be-
tween the lower (min) mark3 and
upper (max) mark2 of oil dipstick1.
If necessary, add engine oil.
For adding engine oil, see “Adding en-
gine oil” (
page 327).
For more information on engine oil, see
“Fuels, coolants, lubricants, etc.”
(
page 489).
For more information on messages in the
multifunction display concerning engine
oil, see the “Practical hints” section
(
page 409).
iCLK 350:
The filling quantity between the upper and lower
marks on the oil dipstick is approximately
2.1 US qt. (2.0 l).
CLK 550 / CLK 63 AMG:
The filling quantity between the upper and lower
marks on the oil dipstick is approximately
1.6 US qt. (1.5 l).

327 Operation
Engine compartment
Adding engine oil
CLK 350 / CLK 550
1Filler cap
CLK 63 AMG
1Filler 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.
More information on engine oil can be
found in the “Technical data” section
(
page 489) and (page 491).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission.
!Only use approved engine oils and oil filters
required for vehicles with Maintenance System.
For a listing of approved engine oils and oil fil-
ters, refer to the Factory Approved Service Prod-
ucts pamphlet (USA only) in your vehicle
literature portfolio, or contact an authorized
Mercedes-Benz Center.
Using engine oils and oil filters of specification
other than those expressly required for the
Maintenance System, or changing of oil and oil
filter at change intervals longer than those called
for by the Maintenance System will result in
engine or emission control system damage not
covered by the Mercedes-Benz Limited
Warranty.
!Excess oil must be siphoned or drained off.
It could cause damage to the engine and emis-
sion control system not covered by the
Mercedes-Benz Limited Warranty.