2006 MERCEDES-BENZ CLK COUPE technical data

456 Technical dataFuels, coolants, lubricants, etc.Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products pamphlet for a
listing of approved product(s). Follow di-
rections on product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to the engine operation.Damage or malfunction resulting from
poor fuel quality or from blending addition-
al fuel additives other than those tested
and approved by us for use on
Mercedes-Benz vehicles listed in the
Factory Approved Service Products pam-
phlet are not covered by the
Mercedes-Benz Limited Warranty.

457 Technical data
Fuels, coolants, lubricants, etc.
Coolants
The engine coolant is a mixture of water
and anticorrosion / antifreeze, which
provides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective
to -22°F (-30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approx. 266°F (130°C).The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over pro-
tection. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see Facto-
ry Approved Service Products pamphlet)
are used to renew the coolant concentra-
tion or bring it back up to the proper level.To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. -22°F [-30°C]). If you
use a solution that is more than 55% anti-
corrosion/antifreeze (freeze protection to
approx. -49°F [-45°C]), the engine temper-
ature will increase due to the lower heat
transfer capability of the solution. There-
fore, do not use more than this amount of
anticorrosion/antifreeze.
If the coolant level is low, water and MB
Anticorrosion /Antifreeze should be used
to bring it up to the proper level (have cool-
ing system checked for signs of leakage).
Please make sure the mixture is in accor-
dance with label instructions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality,
consult an authorized Mercedes-Benz
Center.

458 Technical dataFuels, coolants, lubricants, etc.Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum parts. (Failure to use such anticorro-
sion/antifreeze coolant will result in a sig-
nificantly shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 Anticorrosion/Anti-
freeze agent.Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Center for service.
Anticorrosion/antifreeze quantityModel
Approx. freeze protection–35°F (–37°C)
–49°F (–45°C)
CLK 350
5.25 US qt (5.0 l)
5.8 US qt (5.5 l)
CLK 500
6.4 US qt (6.0 l)
7.0 US qt (6.6 l)

459 Technical data
Fuels, coolants, lubricants, etc.
Windshield washer system and headlamp cleaning system*
Both the windshield washer and headlamp
cleaning system are supplied from the
windshield washer fluid reservoir.
The washer fluid reservoir has a capacity of
approx. 6.4 US qt (6.0 l).

Refill the reservoir with MB Windshield
Washer Concentrate “MB SummerFit”
and water (or concentrate and com-
mercially available premixed wind-
shield washer solvent / antifreeze,
depending on ambient temperatures).Windshield and headlamp washer fluid
mixing ratio
For temperatures above freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and water:


1 part “MB SummerFit” to 100 parts
water
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gallon [4.0 l] water)
For temperatures below freezing point, use
MB Windshield Washer Concentrate
“MB SummerFit” and commercially avail-
able premixed windshield washer
solvent / antifreeze:


1 part “MB SummerFit” to 100 parts
solvent
(1.34 fl oz [40 ml] “MB SummerFit” to
1 gallon [4.0 l] solvent)
Warning!
G
Washer solvent/antifreeze is highly flam-
mable. Do not spill washer
solvent/antifreeze on hot engine parts, be-
cause it may ignite and burn. You could be
seriously burned.

461 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.
Accessory weight
(
page 342)
Air pressure
(page 342)
Aspect ratio
(page 342)
Bar
(page 342)
BAS
(Brake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.Bead
(
page 342)
Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
CAC
(Customer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter, which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Cold tire inflation pressure
(
page 342)
COMAND
(Cockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and the
navigation system, as well as other op-
tional equipment (CD changer, tele-
phone, etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.

472 IndexE
Easy-entry/exit feature 42, 164
Electrical fuses see Fuses
Electrical outlet 277
Electrical system, Technical data 450
Electronic Stability Program see ESP
®
Emergency call system* 279
Emergency calls
911 calls 244
Tele Aid calls 281, 282
Emergency operation
(Limp-Home Mode) 179
Emergency operations
Active head restraints, Resetting 408
Center console,
Indicator lamps 368–369
Gear selector lever, Unlocking 406
Instrument cluster,
Indicator lamps 360–367
Power tilt/sliding sunroof*,
Manual operation 407
Remote door unlock 286
Trunk lid, Releasing from inside 118
Trunk lid, Unlocking 405
Unlocking/locking the vehicle 404Emergency tensioning device see ETD
Emergency, In case of
Battery, Jump starting 430
First aid kit 398
Flat tire, Changing 420
Fuses 436
Hazard warning flasher 137
Roadside Assistance 12, 282
Towing the vehicle 432
Emission control 303
Emission control information label 442
Emission control vacuum
line routing diagram label 442
Emission system warranties 10
Engine
Belt layout 443
Block heater (Canada only) 347
Break-in recommendations 294
Cleaning 353
Compartment 308
Malfunction indicator lamp 25, 362
Maximum engine speed 444
Message in display 384
Number 442, 462
Starting 48
Starting difficulties 50Starting with KEYLESS-GO* 49
Starting with SmartKey 49
Technical data 444
Turning off 58
Turning off with KEYLESS-GO* 58
Turning off with SmartKey 58
Engine coolant see Coolant
Engine oil 309, 454
Adding 312, 454
Additives 454
Changing 312, 454
Checking level 307, 310
Checking level (Dipstick) 311
Consumption 309
Filler cap 313
Filler neck 313
Messages in display 310, 388
Viscosity 462
Engine oil level 307, 310
ESP
®
90, 462
Messages in display 374–375
Warning lamp 365
ETD 72, 462
Safety guidelines 66
Exterior rear view mirrors 43, 181
Parking position 164, 182

473 Index
F
Filler cap, Engine oil 313
Filler neck, Engine oil 313
First aid kit 398
Flat tire 420
Jacking up the vehicle 421
Lowering the vehicle 424
Minispare wheel 401
Mounting the spare wheel 421
Preparing the vehicle 420
Flexible Service System see
FSS (Canada vehicles)
Floormats* 277
Fluids
Brake fluid 307, 454
Engine coolant 307
Engine oil 307, 454
Windshield washer and headlamp
cleaning* system 307, 453
Fog lamps 134, 413
Messages in display 392
Replacing bulbs 412, 413, 417
Front air bags 67
Front lamps see Headlamps
Front passenger front air bag 63, 67
Messages in display 376–379Front passenger front
air bag off indicator lamp 27, 81, 368
Front seat head restraints see
Head restraints
FSS (Canada vehicles) 348, 462
Fuel 306, 453
Additives 456
Automatic transmission fluid 452
Brake fluid 452
Capacities 452
Capacities, Fuel tank 453
Engine coolant 453
Engine oil 452
Filling the tank 305
Fuel display 25
Fuel filler flap and cap 305
Fuel filler flap and cap, Multifunction
display messages 387
Fuel reserve warning lamp 365
Power steering fluid 452
Premium
unleaded gasoline 306, 453, 455
Requirements, Octane rating 455
Technical data 453
Fuel cap
Message in display 363Fuel consumption statistics
After start 165
Resetting 166
Since last reset 166
Fuel filler flap 305
Locking/unlocking 305
Opening 305
Fuel reserve warning lamp 25
Fuel tank
Capacity 453
Filler flap 305
Message in display 390
Fuel, Premium
unleaded gasoline 306, 453, 455
Fuels, coolants, lubricants etc.
Capacities 452
Fuses 436
Aids for changing fuses 436
Fuse box (main)
in passenger compartment 437
Fuse box in engine compartment 437
Fuse box in trunk 438
Fuse chart 436
Fuse extractor 436
Replacing 436
Spare fuses 436

483 Index
Storage compartments 269
Armrest, Front 271, 272
Armrest, Rear 272
Cup holder 273
Glove box 269
Parcel net 270
Storage bags 270
Storage box 269
Storing
Tires 319
Submenus see Control system submenus
Sun visors 183
Sunroof* see Power tilt/sliding sunroof*
Sunshade* (Canada only) 184
Supplemental Restraint System see SRS
Symbols used in
this operator’s manual 15T
Tachometer 25, 142
Overspeed range 142
Tail lamps
Cleaning lenses 355
Messages in display 394
Replacing bulbs 413, 417
Tar stains 352
Technical data
Air conditioning refrigerant 454
Brake fluid 454
Capacities fuels,
coolants, lubricants etc. 452, 453
Coolant 453, 457
Electrical system 450
Engine 444
Engine oil 454
Engine oil additives 454
Fuel capacity 453
Fuel requirements 455
Gasoline additives 456
Lubricants 452
Premium unleaded gasoline 455Rims and tires 445
Tires, Mixed size 448
Tires, Same size 447
Tires, Spare wheel sizes 449
Vehicle dimensions 451
Weights 451
Windshield washer and headlamp
cleaning* system 453, 459
Tele Aid 29, 279, 466
Call priority 285
Emergency calls 281
Hands-free microphone 29
Information 283
Initiating an
emergency call manually 282
Messages in display 397
Remote door unlock 286
Roadside Assistance 282
SOS button 282
Stolen Vehicle
Recovery services 286
System self-check 280
Tele Aid System 279
Telematics* 466