fuel additives MERCEDES-BENZ CLK350 COUPE 2007 C209 Owner's Manual

Contents
Replacing bulbs ................................. 406
Bulbs ............................................ 407
Replacing bulbs for front lamps.... 409
Replacing bulbs for rear lamps ..... 411
Replacing wiper blades ...................... 413
Removing and installing
wiper blades ................................. 413
Flat tire .............................................. 415
Preparing the vehicle.................... 415
Mounting the Minispare wheel ..... 416
MOExtended system*................... 420
Battery ............................................... 421
Disconnecting the battery ............ 422
Removing the battery ................... 423
Charging and reinstalling
the battery.................................... 423
Reconnecting the battery ............. 424
Jump starting ..................................... 425
Towing the vehicle ............................. 427
Towing the vehicle........................ 427
Installing towing eye bolt.............. 429
Fuses ................................................. 431
Main fuse box
in passenger compartment .......... 432
Fuse box in engine compartment . 433
Fuse box in trunk.......................... 434
Technical data................................. 435
Parts service ...................................... 436
Warranty coverage............................. 437
Loss of Service and Warranty
Information Booklet ..................... 437
Identification labels ........................... 438
Layout of poly-V-belt drive ................. 440
CLK 350/CLK 550 ....................... 440
Engine................................................ 441
Rims and tires.................................... 442
Same size tires ............................. 443
Mixed size tires ............................ 444
Minispare wheel ........................... 445
Electrical system ............................... 446
Main dimensions and weights............ 447
Main dimensions .......................... 447
Weights ........................................ 447
Fuels, coolants, lubricants, etc. ......... 448
Capacities .................................... 448
Engine oils.................................... 450
Engine oil additives ...................... 450
Air conditioning refrigerant .......... 450
Brake fluid .................................... 450
Premium unleaded gasoline ......... 451
Fuel requirements ........................ 451Gasoline additives ........................ 452
Coolants ...................................... 453
Windshield washer system and
headlamp cleaning system*......... 455
Index................................................. 457

450 Technical data
Fuels, coolants, lubricants, etc.
Engine oils
Engine oils are specifically tested for their
suitability in our engines and durability for
our service intervals. Therefore, only use
approved engine oils and oil filters re-
quired 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 Ap-
proved Service Products Pamphlet, or
contact an authorized Mercedes-Benz
Center.
Engine oil additives
Do not blend oil additives with engine oil.
They may damage the engine.
Damage or malfunctions resulting from
blending oil additives are not covered by
the Mercedes-Benz Limited Warranty.
Air conditioning refrigerant
R-134a (HFC) refrigerant and special PAG
lubricating oil are used in the air
conditioning system.
Never use R-12 (CFC) or mineral-based
lubricating oil. Otherwise damage to the
system will occur.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere.
Only brake fluid approved by
Mercedes-Benz is recommended. An
authorized Mercedes-Benz Center will
provide you with additional information.
!Using engine oils and oil filters of specifica-
tion other than those expressly required for the
Maintenance System (U.S. vehicles) or FSS
(Canada vehicles), 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 vehicles) will result in engine or
emission control system damage not covered by
the Mercedes-Benz Limited Warranty. Please follow Maintenance System
(U.S. vehicles) or FSS (Canada vehicles) recom-
mendations for scheduled oil changes. Failure to
do so will result in engine or emission control
system damage not covered by the
Mercedes-Benz Limited Warranty.
Warning!G
Under extremely strenuous operating condi-
tions, this moisture content can lead to the
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle's Mainte-
nance Booklet for replacement interval.

452 Technical data
Fuels, 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.

463 Index
Front passenger front air bag 65, 69
Messages in display 372–375
Front passenger front
air bag off indicator lamp 29, 74, 366
Front seat head restraints
see Head restraints
FSS (Canada vehicles) 343
Fuel 304, 449
Additives 452
Automatic transmission fluid 448
Brake fluid 448
Capacities 448
Capacities, Fuel tank 449
Engine coolant 449
Engine oil 448
Filling the tank 303
Fuel display 27
Fuel filler flap and cap 303
Fuel filler flap and cap, Multifunction
display messages 383
Fuel reserve warning lamp 363
Power steering fluid 448
Premium unleaded
gasoline 304, 449, 451
Requirements, Octane rating 451
Technical data 449Fuel cap
Message in display 360
Fuel consumption statistics
After start 163
Resetting 164
Since last reset 164
Fuel filler flap 303
Locking/unlocking 303
Opening 304
Fuel reserve warning lamp 27
Fuel tank
Capacity 449
Filler flap 303
Message in display 385
Fuel, Premium unleaded
gasoline 304, 449, 451
Fuels, coolants, lubricants etc.
Capacities 448
Fuses 431
Fuse box (main)
in passenger compartment 432
Fuse box
in engine compartment 433
Fuse box
in trunk 434
Replacing 431G
Garage door opener 31, 285
Gasoline see Fuel
GAWR 337
Gear range
Automatic transmission 173
Limiting 173
Shifting into optimal 176, 178
Gear selector lever 50, 168
Cleaning 353
Gearshift pattern 168
Lock 51
Message in display 376
Position 169, 170
Position indicator 141
Shifting procedure 169
Unlocking in an emergency 401
Gear selector lever one-touch gearshifting
Automatic transmission 175
Global locking/unlocking
see Key, SmartKey or KEYLESS-GO*

474 Index
T
Tachometer 27, 140
Overspeed range 140
Tail lamps
Cleaning lenses 350
Messages in display 389
Replacing bulbs 407, 411
Tar stains 347
Technical data
Air conditioning refrigerant 450
Brake fluid 450
Capacities fuels, coolants,
lubricants etc. 448, 449
Coolant 449, 453
Electrical system 446
Engine 441
Engine oil 450
Engine oil additives 450
Fuel capacity 449
Fuel requirements 451
Gasoline additives 452
Lubricants 448
Premium unleaded gasoline 451
Rims and tires 442
Tires, Mixed size 444
Tires, Same size 443Tires, Spare wheel sizes 445
Vehicle dimensions 447
Weights 447
Windshield washer and headlamp
cleaning* system 449, 455
Tele Aid 31, 279
Call priority 284
Emergency calls 280
Hands-free microphone 31
Information 283
Initiating an
emergency call manually 281
Messages in display 393
Remote door unlock 284
Roadside Assistance 282
SOS button 281
Stolen Vehicle Recovery
services 285
System self-check 279
Tele Aid System 279Telephone* 28, 165, 276
Answering/ending a call 166
Changing mobile phone cradle 278
Hands-free microphone 31
Inserting in cradle 277
Installing a different
mobile phone cradle 278
Messages in display 393
Operation 165, 230
Phone book 166
Redialing 167
Removing from cradle 278
TEL menu* 165
Temperature
Interior temperature 188, 198
Tie-down rings, Trunk 267
Tightening torque, Wheel bolts 419
Tilt/sliding sunroof*
see Power tilt/sliding sunroof*
Time 156
Time, Setting 156
TIN 339
Tire and Loading Information
Placard 317
Terminology 337