
442 Technical data
Rims and tires
!Only use tires which have been tested and
approved for your vehicle by Mercedes-Benz.
Tires approved by Mercedes-Benz are developed
to provide best possible performance in conjunc-
tion with the driving safety systems on your vehi-
cle such as ABS or ESP
®. Tires specially
developed for your vehicle and tested and ap-
proved by Mercedes-Benz can be identified by
finding the following on the tire’s sidewall:
MO = Mercedes-Benz Original equipment
tires
MOE = Mercedes-Benz Original Extended
(tires with limited run-flat characteristics)
original equipment tires. Using tires other
than those approved by Mercedes-Benz may
result in damage that is not covered by the
Mercedes-Benz Limited Warranty.
iFor information on driving with MOExtended
tires, see “MOExtended system*” (
page 326).
!Using tires other than those approved by
Mercedes-Benz can have detrimental effects,
such as
poor handling characteristics
increased noise
increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit dimen-
sional variations and different tire deformation
characteristics that could cause them to come
into contact with the vehicle body or axle parts.
Damage to the tires or the vehicle may be the
result.
iFurther information on tires and rims is
available at any authorized Mercedes-Benz Cen-
ter. A placard with the recommended tire infla-
tion pressures is located on the driver’s door
B-pillar. Some vehicles may have supplemental
tire inflation pressure information for driving at
high speeds (
page 322) or for vehicle loads
less than the maximum loaded vehicle condition
(
page 321).If such information is provided, it can be found
on the placard located on the inside of the fuel
filler flap. The tire inflation pressure should be
checked regularly and should only be adjusted
on cold tires. Follow tire manufacturer’s mainte-
nance recommendation included with vehicle.
iThe following pages also list the approved
wheel rim and tire sizes for equipping your vehi-
cles with winter tires. Winter tires are not avail-
able as standard or optional factory equipment,
but can be purchased from an authorized
Mercedes-Benz Center.
Depending on vehicle model and the standard or
optional factory-equipped wheel rim/tire config-
uration on your vehicle (Appearance Package,
Sport Package etc.), equipping your vehicle with
winter tires approved for your vehicle model may
also require the purchase of two or four wheel
rims of the recommended size for use with these
winter tires. See an authorized Mercedes-Benz
Center for more information.

443 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

444 Technical data
Rims and tires
Mixed size tires
ModelCLK 350CLK 550
Front axle:
Rims (light alloy)7.5 J x 17 H27.5 J x 17 H2
Wheel offset1.42 in (36 mm)1.46 in (37 mm)
Summer tires1
1Radial-ply tires.
225/45 R17 91W225/45 ZR17 91W
Summer tires*1,2
2Must be used in conjunction with Run Flat Indicator* only.
225/45 R17 91W MOExtended225/45 R17 91W MOExtended
Rear axle:
Rims (light alloy)8.5 J x17 H28.5 J x17 H2
Wheel offset1.18 in (30 mm)1.18 in (30 mm)
Summer tires1,3
3Must not be used with snow chains.
245/40 R17 91W245/40 ZR17 91W
Summer tires*1,2,3245/40 R17 91W MOExtended245/40 R17 91W MOExtended

459 Index
C
California retail buyers and
lessees, Important notice for 11
Call priority (Tele Aid) 284
Can holder see Cup holder
Capacities and
recommended fuel/lubricants 448
Cargo area see Trunk
Cargo tie-down rings 267
Carpets, cleaning 353
Catalytic converter 301
CD changer* 223
MP3 224
CD player 223
Control system 148
Center console 29
Lower part 30
Upper part 29
Central locking
Automatic 118, 162
Locking/unlocking from inside 118
Central locking switch 118
Certification label 438
Certification label, examples 438
Charcoal filter 203Children in the vehicle 80
Air bags 80
Blocking rear
side window operation 86
Front passenger front
air bag off indicator lamp 74
Infant and child
restraint systems 75, 80, 84
LATCH-type child seat anchors 85
Occupant Classification System
(OCS) 70
Cigarette lighter 274
Climate control see
Climate control system
Climate control system
Air conditioning refrigerant 450
Air conditioning, Cooling 192, 204
Air distribution 188, 199
Air recirculation mode 190, 201
Air vents 193, 206
Air volume 188, 189, 200
Charcoal filter 203
Control panel,
Automatic climate control 195
Control panel,
Climate control 185Deactivating/Reactivating 187, 197
Defogging 200
Defrosting 200
Defrosting, rear window 183
Front defroster 189
MAXCOOL 201
Residual engine heat
and ventilation* (REST*) 205
Temperature 188, 198
Clock 27, 140, 156
Setting time 156
Cockpit 24
Cold tire inflation pressure 337
Collapsible wheel chock 394, 396
COMAND* see separate
COMAND operating instructions
Combination switch 55, 132
Control system 141
Functions 143
Multifunction display 141
Multifunction steering wheel 142
Resetting to factory default 151

465 Index
I
Identification labels 438
Identification number,
Vehicle (VIN) 438, 439
Ignition
with KEYLESS-GO* 38
with SmartKey 36
Immobilizer 94
Indicator lamps
see Lamps, indicator and warning
Infant and child restraint systems
see Children in the vehicle
Inflation pressure
see Tires,Inflation pressure
Inside door handle 32, 108
Instrument cluster 26, 138
Illumination brightness 138
Lamps in 356–365
Messages in display
see Multifunction display messages
Multifunction display 141
Instrument lighting see Instrument cluster,
Illumination brightness
Instrument panel see Instrument cluster
Instruments and controls see CockpitInterior lighting 136
Delayed shut-off 161
Interior rear view mirror 45, 180
Antiglare position 179
Auto-dimming 180
Interior storage spaces
see Storage compartments
J
Jack 394
Jacking up the vehicle 416
Jump starting 425K
Key, Mechanical 399
Key, SmartKey 98
Batteries 107
Battery check lamp 100, 105
Changing batteries 404
Factory setting 100, 101
Ignition 36
Locking/unlocking 34, 62, 98
Locking/unlocking,
Global setting 100
Locking/unlocking,
Selective setting 100
Loss of 107
Message in display 385
Opening and closing the
power tilt/sliding sunroof* 251
Opening and closing the
power windows 248
Positions in starter switch 36
Remote control 98
SmartKey with KEYLESS-GO* 101
Starting the engine 51
Steering wheel lock 36
Turning off the engine 61
Unlocking/opening trunk lid 101

467 Index
Lock buttons
Door handle (KEYLESS-GO*) 62, 105
Trunk lid (KEYLESS-GO*) 106
Loss of keys 107
Loss of Service and
Warranty Information Booklet 437
Low beam headlamps
Indicator lamp 27
Messages in display 388
Replacing bulbs (Bi-Xenon*) 407
Replacing bulbs (Halogen) 407, 409
Switching on 27, 55
Lubricants 448M
Maintenance 12, 343
Calling up service indicator 345
Clearing service indicator 344
FSS (Canada vehicles) 343
Maintenance System
(U.S. vehicles) 343
Resetting service indicator 345
Service indicator 343
Service term exceeded 344
Maintenance system (U.S. vehicles) 343
Manual headlamp mode see Headlamps
MAXCOOL maximum cooling 201
Maximum load rating, Tires 338
Maximum loaded vehicle weight,
Tire inflation pressure 338
Maximum tire inflation pressure 338
Mechanical key 399
Memory function see Seats, Power
Menus see Control system menus
Microphone, Hands-free 31
Minispare wheel see Spare wheelMirrors
Adjusting 45
Antiglare position 179
Auto-dimming 180
Exterior rear view mirrors 45
Interior rear view mirror 45
Mobile phone see Telephone*
MOE tires* see MOExtended system*
MOE* see MOExtended system*
MOExtended system* 420
MOExtended tires* 442
MON 304
Motor Octane Number see MON
MP3 224
Multicontour seat*
see Seats, Multicontour*
Multifunction display 141
Changing settings
see Control system menus and
Control system submenus
Selecting language 154
Symbol messages 378–393
Text messages 370–376

471 Index
Recovery services,
Stolen vehicle (Tele Aid) 285
Refrigerant, Air conditioning 450
Refueling 303
Regular checks 305
Remote control
SmartKey 98, 101
SmartKey with KEYLESS-GO* 101
Remote door unlock (Tele Aid) 284
Removing
Ski sack* (Canada only) 264
Replacing bulbs 406
Additional turn signals 407
Backup lamps 407, 411
Brake lamps 407
Corner-illuminating
front fog lamp* 407
Fog lamps 407, 411
Headlamp bulbs 409
Headlamps 407
High beam flasher (Bi-Xenon*) 407
High beam flasher (Halogen) 407
High beam headlamps
(Bi-Xenon*) 407
High beam headlamps
(Halogen) 407, 409High mounted brake lamp 407
License plate lamps 407, 412
Low beam headlamps
(Bi-Xenon*) 407
Low beam headlamps
(Halogen) 407, 409
Parking lamps 407, 410, 411
Side marker lamps 407
Standing lamps 407, 410, 411
Tail lamps 407, 411
Turn signal lamps 407, 411
Turn signal lamps (Bi-Xenon*) 411
Turn signal lamps (Halogen) 410
Reporting safety defects 18
Research Octane Number see RON
Reset button, In instrument
cluster 27, 138, 151, 152
Residual heat and ventilation* see REST*
REST* 205
Restraint system
see Children in the vehicle
Restraint system see SRS
Reverse gear position,
Automatic transmission 168, 170
Rims 338, 442
Roadside Assistance 12, 282RON 304
Roof rack 261
Rubber parts, cleaning 352
Run Flat Indicator (Canada only) 324

475 Index
Tire inflation pressure
see the placard on the fuel filler flap
Tires 313, 442
Air pressure 337
Care and maintenance 314
Chains 342
Cleaning 315
Direction of rotation, Spinning 316
Driving instructions 296
Important notes,
Tire inflation pressure 322
Inflation pressure 305, 321, 323
Inflation pressure,
Information placard 321
Inspection 314
Load rating 339
MOExtended system* 420
MOExtended* 326, 442
Ply composition
and material used 339
Problems under-/overinflated 326
Retreads 313
Rims and tires 442
Rotation 340
Run Flat Indicator 324
Service life 314Sizes 443
Snow 341
Spare wheel 397, 416, 445
Speed rating 298, 330, 339
Storing 315
Temperature 322, 336
Terminology 337
Tire Identification Number see TIN
Traction 297, 339
Tread 339
Tread depth 315, 341
Treadwear indicators 339
Wear pattern 340
Winter 341
Tools 394
Top tether
Children in the vehicle 84
Tether attachment points 84
Towing eye bolt 394, 429, 430
Towing the vehicle 427
Tow-start 425, 427
Traction 92, 297, 339
Transmission see Automatic transmission
Traveling abroad 300
Tread 339
Tread depth 315, 341Treadwear indicators 339
Trip computer 163
Trip odometer 139
Trunk
Closing from inside 111
Fuse box 434
Lamp 137
Lid 109
Lock button, KEYLESS-GO* 106
Opening 109
Opening, from inside 110
Tie-down rings 267
Trunk lid 111
Trunk lid emergency release 116
Unlocking in an emergency 400
Unlocking/opening,
KEYLESS-GO* 107
Unlocking/opening,
SmartKey 101
Valet locking 117