oil additives MERCEDES-BENZ CLK500 CABRIOLET 2005 A209 Owner's Manual

ContentsTechnical data.................................. 439
Parts service ...................................... 440
Warranty coverage ............................. 441
Loss of Service and Warranty
Information Booklet...................... 441
Identification labels............................ 442
Layout of poly-V-belt drive ................. 443
CLK 320/CLK 500/CLK 55 AMG . 443
Engine ................................................ 444
Rims and tires .................................... 445
Same size tires ............................. 446
Mixed size tires ............................ 447
Minispare wheel ........................... 449
Electrical system................................ 450
Main dimensions................................ 451
Weights .............................................. 452Fuels, coolants, lubricants, etc. ......... 453
Capacities .................................... 453
Engine oils.................................... 455
Engine oil additives ...................... 455
Air conditioning refrigerant .......... 456
Brake fluid .................................... 456
Premium unleaded gasoline ......... 456
Fuel requirements ........................ 457
Gasoline additives ........................ 457
Coolants....................................... 458
Windshield washer system and
headlamp cleaning system* ......... 460
Technical terms............................... 461Index................................................. 467

306 OperationEngine compartment
Closing
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 gauge 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.


455 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.

457 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.

475 Index
E
Easy-entry/exit feature 112
Activating 156
Electrical fuses 436
Electrical outlet in
rear passenger compartment 275
Electrical system
Technical data 450
Electronic Stability Program see ESP
Emergency call
911 237
Emergency call system* 277
Emergency calls
Initiating an emergency call 279
With Tele Aid 278
Emergency operation
(Limp Home Mode) 175
Emergency operations
Closing soft top 403
Locking the vehicle 398
Remote door unlock 283
Unlocking the vehicle 397
Emergency tensioning device see ETD
Emission control 300
Emission control information label 442Ending
A call (telephone*) 161
Engine
Compartment 305
Message in display 356
Starting 47
Starting with KEYLESS-GO* 47
Starting with the SmartKey 47
Technical data 444
Turning off 56
Engine cleaning 347
Engine compartment 305
Fuse box in 437
Hood 305
Engine malfunction
indicator lamp 25, 356
Engine number 442, 462Engine oil 306, 455
Adding 309
Additives 455
Checking level 307
Consumption 306
Filler cap 309
Filler neck 309
Message in display 380
Messages in display 308
Viscosity 462
Engine oil level see Oil level
ESP 25, 86, 462
Messages in display 368
Switching off 87
Switching on 88
Warning lamp 358
ETD 462
Safety guidelines 64
ETD (Emergency tensioning device) 70
Exterior lamp switch 122
Exterior rear view mirrors
Adjusting 41
Parking position for 157

491 Index
Storing
Minispare wheel 395
station (satellite radio) 217
Storing (Memory function)
Positions into memory 120
Storing tires 315
Submenus
Convenience 156
For settings 135
In control system 137
Instrument cluster 145, 147
Lighting 151
Resetting functions
in Control system 143
Selecting 143
Settings menu 143
Vehicle 155
Substitute lamps
Bulbs 414
Sun visors 178
Supplemental Restraint System see SRSSwitching off
Audio system 204
Automatic central locking
(control system) 155
Engine 56
ESP 87
Hazard warning flasher 128
Headlamps 56
Parktronic system* 263
Switching on
Audio system 204
Automatic central locking
(control system) 155
ESP 88
Front fog lamps 125
Front lamps 122
Hazard warning flasher 128
Headlamps 50
High beams 126
Parking lamps 122
Parktronic system* 263
Rear fog lamp 125
Windshield wipers 52
Synchronizing
Power windows 243T
Tachometer 25, 132
Overspeed range 132
Tail lamps
Cleaning 348
Replacing bulbs 415, 420
Tar stains 346
Technical data 456
Brake fluid 456
Coolant 453
Coolants 458
Electrical system 450
Engine 444
Engine oil 455
Engine oil additives 455
Fuel requirements 457
Fuels 453
Gasoline additives 457
Lubricants 453
Main dimensions 451
Premium unleaded gasoline 456
Rims and tires 445
Weights 452
Windshield and headlamp
washer* system 454, 460