Page 397 of 440

397 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.BabySmart
TM1
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (indicator
lamp PASS. AIRBAG OFF in the center
console comes on). See your autho-
rized Mercedes-Benz Center for avail-
ability.
BabySmart
TM compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front airbag if a BabySmart
TM
compatible child seat is installed.BAS
(B
rake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bi-Xenon headlamps*
Headlamps which use an electric arc as
the light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.
1BabySmart
TM is a trademark of Siemens
Automotive Corp.
Page 401 of 440

401 Technical terms
Remote Vehicle Diagnostics
Transmission of vehicle data and cur-
rent location to the Mercedes-Benz
Customer Assistance Center for sub-
scribers to Tele Aid service.
REST
(Residual engine heat utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the en-
gine has been turned off.
Restraint systems
Seat belts, belt tensioners, airbags and
child restraint systems. As indepen-
dent systems, their protective func-
tions complement one another.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of
positionP without SmartKey turned
and brake pedal depressed.
Speedshift (CLK 55 AMG)
Steering wheel gearshift control. You
can change the gears yourself with the
steering wheel gearshift buttons.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Page 404 of 440

404 IndexAir conditioning (cooling)
Turning off 181
Turning on 181
Air conditioning refrigerant 390
Air distribution
Adjusting 176
Air pressure see Tire inflation pressure
Air recirculation mode 178
Activating 178
Deactivating 179
Air vents, rear passenger compartment
Adjustable 182
Air volume
Adjusting 177
Airbags 59
BabySmart
TM
airbag deactivation system 397
Children 60
Front 63
Passenger 63
Safety guidelines 62
Side impact 64
Window curtain 64Alarm
Audible 75, 83, 84
Canceling 83, 84
Visual 82
Alarm system
Anti-theft 82
Alignment bolt 360
Alignment bolt (vehicle tool kit) 397
Anticorrosion/antifreeze 393
Antiglare
Automatic 167
Antilock brake system (ABS) 397
Anti-theft alarm system
Arming 82
Canceling alarm 83, 84
Disarming 82
Anti-theft systems 81
Anti-theft alarm system 82
Immobilizer 81
Tow-away alarm 83
Aquaplaning see Hydroplaning
Armrest
Storage spaces 246Ashtray (Center console) 247
Opening 247
Reinstalling 248
Removing 248
Ashtray (Rear seat) 248
Opening 248
Reinstalling 248
Removing 248
At the gas station 278
ATF (automatic transmission fluid) 286
AUDIO menu 134
Selecting radio station 135
Selecting satellite radio* station 135
Audio system 183
Audio and telephone, operation 183
Button and soft key operation 186
Cassette operation 196
CD operation 199
Operating and display elements 184
Operating safety 183
Operation 186
Radio operation 189
Switching off 186
Switching on 186
Telephone operation 203
Page 406 of 440

406 IndexBattery, vehicle 288, 363
Charging 364
Disconnecting 364
Messages in display 320
Reconnecting 365
Reinstalling 364
Removing 364
Bi-Xenon headlamps* 397
Block heater* 295
Blocking
Rear window operation 74
Bolts
For Minispare wheel 342
Brake assist system (BAS) 397
Brake fluid 390
Message in display 321
Brake lamp bulbs 351
Brake lamp, high mounted 351
Brake pads
Message in display 321
Brakes 268
Warning lamp 307
Break-in period 266Bulbs, replacing 350
Additional turn signals 351
Backup lamps 351
Brake lamps 351
Fog lamps 351
Front lamps 351
High beam (Bi-Xenon*) 351
High beam (Halogen) 351
High beam flasher (Bi-Xenon*) 351
High beam flasher (Halogen) 351
High mounted brake lamp 351
License plate lamps 351, 356
Low beam (Bi-Xenon*) 351
Low beam (Halogen) 351
Parking lamps 351, 353, 355
Rear fog lamp 351
Rear fog lamps 356
Side marker lamps 351, 355
Standing lamps 351, 353, 355
Tail lamp assemblies 351, 356
Turn signal lamps 351
Button
Audio system 186C
CAC (Customer Assistance Center) 398
Calling up
Distronic* settings 137
Range (distance to empty) 153
Service indicator 297
CAN system 398
Canceling
Cruise control 219
Capacities
Fuels, coolants, lubricants, etc. 388
Cargo tie-down rings 243
Cassette operation
Playing cassettes 196
Cassette player
Operating 136
Catalytic converter 275
CD changer* 199
CD operation 199
CD player
Operating 136
Page 415 of 440

415 Index
High beam bulb for high beam flasher
(Bi-Xenon*)
Replacing bulbs 354
High beam flasher 48, 123
Replacing bulbs (Bi-Xenon*) 351
Replacing bulbs (Halogen) 351
High beam headlamps
Messages in display 330
Replacing bulbs (Bi-Xenon*) 351
Replacing bulbs (Halogen) 351, 353
Switching on 123
High mounted brake lamp 351
Hood 281
Closing 282
Message in display 328
Opening 281
Hydroplaning 271I
Identification labels 378
Ignition 31, 33
Switching on 44
Immobilizer 81
Activating 81
Deactivating 81
Indicator lamps see
Lamps, indicator and warning
Infant and child restraint systems 68
Installing 72
LATCH child seat anchors 73
Information
About service and warranty 10
Button for Tele Aid 256
Installing
Floormates* 249
Infant and child restraint systems 72
Towing eye bolt 370
Towing eye bolt (CLK 55 AMG) 371
Wiper blades 357Instrument cluster 22, 126, 399
Cleaning 303
Coolant temperature indicator 127
Illumination 126
Lamps in 306–312
Multifunction display 129
Outside temperature indicator 128
Selecting language 143
Instruments and controls see Cockpit
Interior lighting 124
Activating automatic control 124
Deactivating automatic control 125
Delayed switch-off 148
Manual operation 125
Interior rear view mirror
Adjusting 38
Antiglare 167
Interior storage spaces 244
Armrest 246
Glove box 244
Parcel net 247
Storage bags 247
Page 416 of 440

416 IndexJ
Jack 337, 339
Jump starting 366K
Key, mechanical 343
Key, SmartKey with KEYLESS-GO*
Changing the batteries 346
Key-dependency memory
Settings 151
KEYLESS-GO* 399
Activating ignition with 33
Closing side windows with 94
Closing sliding/pop-up roof*
with 94, 213, 217
Closing windows with 213, 217
Factory setting 92
Global locking 92
Global unlocking 92
Important notes 90
Locking the vehicle 93
Messages in display 328
Remote controls 89
Starting the engine 44
Turning off the engine 54
Unlocking with 32
Unlocking, trunk lid 94
Kickdown 163, 399
Kilometers/miles in speedometer 142
Km/h or mph in speedometer 142L
Labels, identification 378
Lamp bulbs, exterior 350
Lamp sensor
Messages in display 330
Lamps, exterior
Front 351
Light sensor 330
Messages in display 329–332
Rear 351
Lamps, indicator and warning
ABS 306
Battery (SmartKey) 87, 92
Brakes 307
Center console 313
CHECK ENGINE 308
Coolant 309, 322
Distance warning 310
Distronic* 223, 229
Engine diagnostics 308
ESP 310, 311
Page 419 of 440

419 Index
Menus 130
AUDIO 134
Control system 400
Distronic* 137, 224
In control system 132, 133
Malfunction memory 138
NAV 137
Settings menu 139
Standard display 134
Submenus 131
TEL* 154
Trip computer 152
Microphone
Hands-free microphone 27
Miles/kilometers in speedometer
Setting 142
Minispare wheel 340
Mounting 358
Removing 340
Storing 340
Technical data 384
Wheel bolts 342Mirrors
Activating exterior rear
view mirror parking position 168
Adjusting 38
Automatic antiglare
for rear view mirror 167
Exterior rear view mirror 39
Exterior rear view
mirror parking positions 151
Interior rear view mirror 38
Storing exterior rear view
mirror parking position 118
MON 279
MON (Motor Octane Number) 400
Mph or km/h in speedometer 142
Multicontour seat* 112
Multifunction display 129, 400
Selecting language 143
Standard display 133Multifunction display messages
ABS 315
BAS 316
Battery 320
Brake fluid 321
Brake pads 321
Check engine 308
Coolant 323
Coolant level 322
Cruise control 317
Display 325
Distronic* 317
Doors 325
Engine 308
Engine oil 326
ESP 318
Fog lamps, front 329
Fuel reserve tank 328
Gear selector lever 319
High beam headlamps 330
Hood 328
Key 328
Lamp sensor 330
Lamps 330
Page 420 of 440
420 Index
License plate lamp 330
Low beam 330
Parking brake 321
SmartKey with KEYLESS-GO* 328
Steering gear oil level 335
Sunroof* 336
Symbol messages 320–336
Tele Aid 334
Telephone* 336
Text messages 315–319
Trunk 336
Washer fluid 336
Multifunction
steering wheel 24, 130, 400
Buttons 130N
Navigation system
Operating 137
See separate COMAND*
operating instructions
Night security illumination 121
Nubuck leather upholstery (CLK 55 AMG)
Cleaning 304O
Occupant safety 58
Airbags 59
Children and airbags 60
Children in the vehicle 68
Fastening the seat belts 40
Infant and child restraint systems 68
LATCH child seat anchors 73
Seat belts 40, 62
Odometer, main 23
Oil
Adding 285
Checking level 283
Consumption 283
Filler cap 285
Filler neck 285
Viscosity 399
Oil level
Checking 280
One-touch gearshifting 158
Canceling gear range limit 158
Downshifting 158
Upshifting 158