2005 MERCEDES-BENZ CLK320 COUPE fuel additives

ContentsBattery ............................................... 420
Disconnecting the battery ............ 421
Removing the battery ................... 421
Charging and reinstalling battery . 422
Reconnecting the battery ............. 422
Jump starting ..................................... 423
Towing the vehicle ............................. 425
Towing the vehicle........................ 425
Installing towing eye bolt.............. 427
Fuses ................................................. 429
Aids for changing fuses ................ 430
Main fuse box in passenger
compartment................................ 430
Fuse box in engine compartment . 431
Fuse box in trunk.......................... 432
Technical data................................. 433
Parts service ...................................... 434
Warranty coverage............................. 435
Loss of Service and Warranty
Information Booklet ..................... 435
Identification labels ........................... 436
Layout of poly-V-belt drive ................. 437
CLK 320/CLK 500/CLK 55 AMG. 437
Engine................................................ 438
Rims and tires.................................... 439
Same size tires ............................. 440
Mixed size tires ............................ 441
Minispare wheel
(except CLK 55 AMG)................... 443
Collapsible tire
(CLK 55 AMG only)....................... 443
Electrical system ............................... 444
Main dimensions ............................... 445
Weights.............................................. 446Fuels, coolants, lubricants, etc. ......... 447
Capacities .................................... 447
Engine oils ................................... 449
Engine oil additives ...................... 449
Air conditioning refrigerant .......... 450
Brake fluid.................................... 450
Premium unleaded gasoline ......... 450
Fuel requirements ........................ 451
Gasoline additives ........................ 451
Coolants ...................................... 452
Windshield washer system and
headlamp cleaning system*......... 454
Technical terms............................... 455Index................................................. 461

449 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.
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 inter-
vals longer than those called for by the
Maintenance System (U.S. vehicles) or
FSS (Canada vehicles) will result in engine
damage not covered by the
Mercedes-Benz Limited Warranty. Please follow Maintenance System
(U.S. vehicles) or FSS (Canada vehicles)
recommendations for scheduled oil
changes. Failure to do so will result in
engine damage not covered by the
Mercedes-Benz Limited Warranty.
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.

451 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not
exceed 10%; MTBE not to exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains 10%
ethanol and 90% unleaded gasoline, can be
used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, 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 any specific 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.

470 IndexF
Fahrenheit
Setting temperature units 149
Fastening the seat belts 43
Fine adjustment
Cruise control 259
First aid kit 389
Flat tire 412
Collapsible tire
(CLK 55 AMG only) 394
Lowering the vehicle 418
Minispare wheel
(except CLK 55 AMG) 393
Mounting the spare wheel 413
Preparing the vehicle 412
Flexible Service System (Canada vehicles)
see Maintenance service system
Flexible Service System (FSS) 456
Floormats*
Removing 278
Installing 278Fog lamp, rear 128, 405
Fog lamps
Replacing bulbs 404
Fog lamps, front
Messages in display 382
Replacing bulbs 405
Switching on 128
Front air bags 65
Front lamps
Messages in display 382–384
Replacing bulbs 404, 406
Switching on 124
Front passenger front
air bag off indicator lamp 77, 360
Front seat head restraints
Installing 114
Power seat 114
Removing 114
Front seats
Seat heating* 119
Ventilation* 120
FSS (Canada vehicles) see
Maintenance service system
FSS (Flexible Service System) 456Fuel 306
Additives 451
Fuel reserve warning lamp 359
Gasoline additives 451
Premium
unleaded gasoline 306, 448, 450
Requirements 451
Reserve warning 25
Technical data 447
Fuel additives 451
Fuel cap
Message in display 356
Fuel consumption statistics
After start 161
Since last reset 161
Fuel filler flap 305
Locking 305
Opening 399
Unlocking 305
Fuel requirements 451
Fuel reserve tank
Message in display 381
Fuel tank
Capacity 448
Filler flap 305

471 Index
Fuels, coolants, lubricants etc.
Capacities 447
Functions (control system) 138, 141
Resetting 147
Fuse box 430, 431
Fuse chart 430
Fuse extractor 430
Fuses 429
Aids for changing fuses 430
Auxiliary fuse box in trunk 432
Fuse box in engine compartment 431
Fuse box in
passenger compartment 430
Fuse chart 430
Fuse extractor 430
Spare fuses 430G
Garage door opener 29, 287
Gasoline see Fuel
Gasoline additives 451
GAWR 338
Gear range 456
Automatic transmission 168
Limiting 168
Shifting into optimal 167
Gear range limit
Canceling 167
Gear selector lever 25, 165, 400
Cleaning 351
Lock 47
Message in display 372
Position 25
Position
(Automatic transmission) 165, 169
Unlocking manually 400Global
Locking 96
Locking with KEYLESS-GO* 101
Unlocking 96
Unlocking with KEYLESS-GO* 101
Global Positioning System (GPS) 456
Glove box 23, 272
Closing 272
Opening 272
Good visibility 178
GPS 456
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR
Gross Vehicle Weight see GVW
GVW 338
GVWR 339

485 Index
Submenus
Control system 141
Convenience 158
For settings 139
Instrument cluster 149, 151
Lighting 154
Resetting functions
in Control system 147
Selecting 147
Settings menu 147
Vehicle 158
Sun visors 181
Sunroof*
Message in display 388
Supplemental Restraint System see SRS
Switching off
Audio system 210
Automatic central locking
(control system) 158
Engine 56
ESP 87
Hazard warning flasher 131
Headlamps 56
Parktronic system* 263Switching on
Audio system 210
Automatic central locking
(control system) 158
ESP 88
Front fog lamps 128
Front lamps 124
Hazard warning flasher 131
Headlamps 50
High beams 129
Parking lamps 124
Parktronic system* 263
Rear fog lamp 128
Windshield wipers 52
Synchronizing
Power tilt/sliding sunroof* 254
Power windows 250T
Tachometer 25, 136
Overspeed range 136
Tail lamps
Cleaning 349
Replacing bulbs 405, 410
Tar stains 348
Technical data 450
Brake fluid 450
Coolant 447
Coolants 452
Electrical system 444
Engine 438
Engine oil 449
Engine oil additives 449
Fuel requirements 451
Fuels 447
Gasoline additives 451
Lubricants 447
Main dimensions 445
Premium unleaded gasoline 450
Rims and tires 439
Weights 446
Windshield and headlamp
washer* system 448, 454