Page 451 of 505

450 Practical hints
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the bat-
tery of another vehicle. Observe the follow-
ing:
Jump starting should only be performed
when the engine and catalytic convert-
er are cold.
Do not start the engine if the battery is
frozen. Let the battery thaw out first.
Only jump start from batteries with the
same voltage rating (12 V). Jump start-
ing with a higher voltage battery could
damage the vehicle’s electrical system,
which will not be covered by the
Mercedes-Benz Limited Warranty.
Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.
Always make sure the jumper cables
are not on or near pulleys, fans or other
parts that move when an engine is
started or running.
Warning!G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water, and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
!Do not tow-start the vehicle.
!Avoid repeated and lengthy starting at-
tempts.
Do not attempt to start the engine using a bat-
tery quick charge unit.
If the engine does not run after several unsuc-
cessful starting attempts, have it checked at the
nearest authorized Mercedes-Benz Center.
Excessive unburned fuel generated by repeated
failed starting attempts may damage the catalyt-
ic converter and may present a fire risk.
Make sure the jumper cables do not have loose
or missing insulation.
Make sure the cable clamps do not touch any
other metal part while the other end is still at-
tached to a battery.
Warning!G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(
page 321).
Page 468 of 505
467 Technical data
Rims and tires
Same size tires
ModelCLK 350CLK 550
Rims (light alloy)7.5 J x 17 H27.5 J x 17 H2
Wheel offset1.42 in (36 mm)1.45 in (37 mm)
Winter tires1,3
1Radial-ply tires
225/45 R17 91 H M+S.225/45 R17 91 H M+S.
Winter tires1,2,3
2Must be used in conjunction with Run Flat Indicator* only. 3Not available as factory equipment.
225/45 R17 91 H M+S.MOExtended225/45 R17 91 H M+S.MOExtended
ModelCLK 63 AMG
Rims (light alloy)8 J x 18 H2
Wheel offset1.34 in (34 mm)
Winter tires1,2,3225/40 R18 92 V XL (Extra Load) M+S.
1Radial-ply tires2Not available as factory equipment.3For use with snow chains contact an authorized Mercedes-Benz Center.
Page 498 of 505

497 Index
Steering wheel 43
Buttons 28
Cleaning 363
Lock 52
Steering wheel gearshift control
one-touch gearshifting*
Automatic transmission 179
Stolen Vehicle Recovery services 293
Storage box 276
Storage compartments 276
Armrest, Front 278
Armrest, Rear 279
Cup holder 279
Glove box 276
Parcel net 277
Storage bags 277
Storage box 276
Telephone* 278
Storing
Tires 325
Submenus see
Control system submenus 141
Sun visors 186
Symbols used
in this operator’s manual 15T
Tachometer 27, 138
Overspeed range 138
Tail lamps
Cleaning lenses 361
Messages in display 399
Replacing bulbs 428, 432
Tar stains 357
Technical data
Air conditioning refrigerant 474
Brake fluid 475
Capacities fuels, coolants,
lubricants etc. 472, 473
Coolant 473, 477
Electrical system 470
Engine 465
Engine oil 474
Engine oil additives 474
Fuel capacity 473
Fuel requirements 476
Gasoline additives 476
Lubricants 472
Premium unleaded gasoline 475
Rims and tires 466
Tires, Mixed size 468
Tires, Same size 467Tires, Spare wheel sizes 469
Vehicle dimensions 471
Weights 471
Windshield washer and headlamp
cleaning* system 473, 479
Tele Aid 31, 287
Call priority 292
Emergency calls 288
Hands-free microphone 31
Information 291
Initiating an
emergency call manually 289
Messages in display 401
Remote door unlock 292
Roadside Assistance 290
SOS button 289
Stolen Vehicle
Recovery services 293
System self-check 287
Tele Aid System 287