Page 444 of 481
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
Page 445 of 481
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
Page 446 of 481
445 Technical data
Rims and tires
Minispare wheel
ModelAll Models
Rim3.5 B x 17 H2
Wheel offset0.67 in (17 mm)
Tire1
1Must not be used with snow chains.
T 125/80 R 17 99M
!Please compare the recommended tire in-
flation pressure for your vehicle with the tire in-
flation pressure on the yellow label located on
the spare wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the spare
wheel tire to the recommended tire inflation
pressure given on the yellow label on the spare
wheel rim.
iPlease note that the tire inflation pressure of
the Minispare tire differs from the tire inflation
pressure of the road tires.
Make sure the Minispare tire is inflated to ap-
proximately 61 psi (4.2 bar).
Page 458 of 481

457 Index
A
ABS 27, 88
Malfunction indicator lamp 356
Messages in display 370
Accelerator position,
automatic transmission 172
Accessory weight 337
Accident 58
Active head restraints 79
Resetting 403
Air bags 65
Children 80
Front passenger front
air bag off indicator lamp 74
Front side impact air bags 70
Front, Driver 69
Front, Passenger 69
Occupant Classification System
(OCS) 70
Rear side impact air bags* 70
Safety guidelines 68
Window curtain 70
Air conditioning refrigerant 450
Air conditioning system
see Climate control systemAir conditioning, Cooling 192, 204
Air distribution 188, 199
Air pressure see Tires, Inflation pressure
Air recirculation mode 190, 201
Air vents 193, 206
Air volume 188, 200
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 394, 418
Anticorrosion/antifreeze 453, 454
Antiglare, Rear view mirror 179, 180
Anti-theft systems 94
Anti-theft alarm system 94
Immobilizer 94
Aquaplaning see Hydroplaning
Armrest 270, 271
Ashtrays 272, 273
Aspect ratio 337
ATF 309
AUDIO menu 147
CD player (CD, MP3-CD) 148
Radio station 147
Radio station (satellite*) 147
Search function 161Audio system 207
Button and soft key operation 210
CD changer* 226
CD operation 223
Emergency calls "911" 243
MP3 224
Operating and display elements 208
Operating audio system 207
Operating safety 207
Radio operation 214
Sound system* 211
Switching on/off 210
Telephone* operation 207, 230
Auto-dimming, Rear view mirror 180
Automatic central locking,
Control system 118, 162
Automatic climate control see
Climate control system
Automatic headlamp mode see Headlamps
Automatic lighting control,
Interior lighting 136
Automatic locking when driving 118
Automatic shift program 174
Page 460 of 481

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
Page 463 of 481

462 Index
Emergency tensioning device see ETD
Emergency, In case of
Battery, Jump starting 425
First aid kit 394
Flat tire, Changing 415
Fuses 431
Hazard warning flasher 135
Roadside Assistance 12, 282
Towing the vehicle 427
Emission control 302
Emission control information label 439
Emission control vacuum line
routing diagram label 439
Emission system warranties 10
Engine
Belt layout 440
Block heater (Canada only) 342
Break-in recommendations 292
Cleaning 348
Compartment 306
Malfunction indicator lamp 27, 359
Maximum engine speed 441
Message in display 380
Number 439
Starting 50
Starting difficulties 52Starting with KEYLESS-GO* 51
Starting with SmartKey 51
Technical data 441
Turning off 60
Turning off with KEYLESS-GO* 61
Turning off with SmartKey 61
Engine coolant see Coolant
Engine oil 308, 450
Adding 309, 450
Additives 450
Changing 309, 450
Checking level 305, 308
Consumption 308
Filler cap 309
Filler neck 309
Engine oil level 305
ESP
®91
Messages in display 370–371
Warning lamp 362
ETD 78
Safety guidelines 68
Exterior rear view mirrors 45, 180
Exterior view 22F
Filler cap, Engine oil 309
Filler neck, Engine oil 309
First aid kit 394
Flat tire 415
Jacking up the vehicle 416
Lowering the vehicle 419
Minispare wheel 397
Mounting the spare wheel 416
Preparing the vehicle 415
Flexible Service System
see FSS (Canada vehicles)
Floormats* 275
Fluids
Brake fluid 305, 450
Engine coolant 305
Engine oil 305, 450
Windshield washer and headlamp
cleaning* system 305, 449
Fog lamps 132, 407
Messages in display 387
Replacing bulbs 407, 408, 411
Front air bags 69
Front lamps see Headlamps
Page 466 of 481

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
Page 468 of 481

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