Page 400 of 440

400 Technical termsMemory function*
Used to store three individual seat,
steering wheel and mirror positions for
each SmartKey or, if so equipped,
KEYLESS-GO* feature.
Menu
The control system displays are ar-
ranged in menus. Each menu contains
a number of commands for particular
systems. In the Audio menu, for exam-
ple, you will find the commands
Select
radio station
or Operate CD player
.
Using commands, you can directly
change the settings for your vehicle.
MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline's
ability to resist undesired detonation
(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.Multifunction display
Display field in the speedometer used
to present information provided by the
control system.
Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Overspeed range
Engine speeds within the red marking
on the tachometer dial. Avoid this en-
gine speed range, as it may result in se-
rious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Parktronic (Parking assist)*
System which uses visual and acoustic
signals to assist the driver during park-
ing maneuvers.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing
engine
clutch/torque converter
transmission
transfer case
drive shaft
differential
axle shafts/axles
Program mode selector switch
Used to switch the automatic transmis-
sion between regular operationS and
comfort operationC.
CLK 55 AMG with steering wheel gear-
shift control and manual shift program:
In addition toS andC (for regularS or
comfortC operation, see above) you
can use theM for manual shift
program.
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 403 of 440

403 Index
A
ABS 23, 76, 397
Malfunction indicator lamp 306
Messages in display 315
Accelerator position,
automatic transmission 163
Accident
In case of 50
Activating
Air conditioning (cooling) 181
Air recirculation mode 178
Anti-theft alarm system 82
Automatic climate control 173
Central locking (control system) 149
Charcoal filter 179, 180
Distance warning function* 230
Distronic* 225, 226
Easy-entry/exit feature 150
ESP 80
Exterior headlamps 47
Exterior lamps 120
Exterior rear view
mirror parking position 168
Front and rear fog lamp 121, 122
Hazard warning flasher 123
Headlamps 47High beams 123
Ignition 31
Ignition with KEYLESS-GO* 33
Immobilizer 53, 81
Manual shift program
CLK 55 AMG 164
Rapid seat heating*
with seat ventilation* 115
Rapid seat heating*
without seat ventilation* 114
Rear window defroster 171
Residual heat 181
Seat heating*
with seat ventilation* 115
Seat heating*
without seat ventilation* 114
Seat ventilation* 113
Steering wheel gearshift
control (CLK 55 AMG) 164
Tow-away alarm 83
Trunk lid opening limiter*
(control system) 149
Windshield wipers 49Adding
Coolant 287
Engine oil 285
Additional turn signals 351
Adjustable air vents,
rear passenger compartment 182
Adjusting 34
Air distribution 176
Air volume 177
Backrest tilt 36
Exterior rear view mirror 39
Head restraint height 36
Head restraint tilt 36
Instrument cluster illumination 126
Interior rear view mirror 38
Mirrors 38
Multicontour seat* 112
Seat cushion depth 112
Seat cushion tilt 36
Seat fore and aft adjustment 35
Seat height 36
Seats 34
Steering column in/out 38
Steering column up/down 38
Steering wheel 37
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 405 of 440

405 Index
Automatic antiglare
for rear view mirror 167
Automatic central locking
Activating/deactivating
(control system) 149
Automatic climate control 172
Adjusting air distribution 176
Air recirculation mode 178
Defrosting 177
Rear window defroster 171
Setting the temperature 175
Automatic headlamp mode 120
Automatic lighting control
Activating 124
Deactivating 125
Automatic locking when driving 105Automatic transmission 157
Accelerator position 163
Comfort (C) program mode 163, 164
Emergency operation
(Limp Home Mode) 165
Fluid level 286
Gear ranges 159
Gear selector lever position 157, 160
Gear shifting malfunctions 165
Kickdown 163
Manual (M) program mode 164
Manual shift program mode
(CLK 55 AMG) 164
One-touch gearshifting 158
Program mode selector switch 163
Program mode
selector switch CLK 55 AMG 164
Speedshift (CLK 55 AMG) 161
Sport (S) program mode 163, 164
Starting the engine 44
Steering wheel gearshift control
(CLK 55 AMG) 161
Transmission fluid 286
Auxiliary fuse box 374B
BabySmart
TM
Airbag deactivation system 70, 397
Compatible child seats 70, 397
Self-test 71
Backrest
Folding forward 241
Folding rearward 242
Backup lamps 351, 356
Bulbs 351
BAS 77, 397
Messages in display 316
Batteries, SmartKey
Changing 345
Check lamp 87, 92
Checking 88, 93
Batteries, SmartKey with KEYLESS-GO*
Changing 346
Check lamp 87, 92
Checking 88, 93
Battery discharged
Jump starting 366
Page 408 of 440

408 IndexClosing
Cup holder 245
Glove box 244
Hood 282
Side windows 211
Side windows
with KEYLESS-GO* 94
Sliding/pop-up roof* 214, 348
Sliding/pop-up roof*
with KEYLESS-GO* 94, 213, 217
Sliding/pop-up roof*
with SmartKey 216
Trunk 97
Windows 210
Windows
with KEYLESS-GO* 213, 217
Windows
with SmartKey 212
Closing from the inside
Trunk 99
Closing sliding/pop-up roof*
In an emergency 348
Cockpit 20, 398
Cockpit management
and data system (COMAND*) 398COMAND* 398
COMAND* see
separate operating instructions
Combination switch 123
High beam flasher 48, 123
Turn signals 48
Windshield wipers 48
Comfort driving
Transmission program
mode C (Comfort) 163, 164
Consumer information 395
Control and operation
of radio transmitters 275Control system 129, 398
AUDIO menu 134
Convenience submenu 149
Display digital speedometer 134
Distronic* menu 137
Functions 130, 133
Instrument cluster
submenu 142, 144
Lighting submenu 145
Malfunction memory menu 138
Menus 132, 133, 400
Multifunction display 129
Multifunction steering wheel 130
NAV menu 137
Selecting radio system 135
Selecting satellite radio* system 135
Settings menu 139
Standard display menu 134
Submenus 131, 133
TEL* menu 154
Trip computer menu 152
Trunk lid opening limiter* 149
Vehicle submenu 148
Page 418 of 440

418 IndexLoss of Service and
Warranty Information Booklet 377
Loss of SmartKey 89
Loss of SmartKey with KEYLESS-GO* 95
Low beam headlamps
Messages in display 330
Replacing bulbs (Bi-Xenon*) 351
Replacing bulbs (Halogen) 351, 353
Lowering
Vehicle 362
Lubricants
Technical data 388M
Main dimensions 386
Maintenance 12, 296
Malfunction
Displaying 138
Malfunction memory 138
Calling up 138
Manual gear shifting
Transmission program
mode M (Manual) 164
Manual headlamp mode 120
Manual operations
Fuel filler flap 347
Interior lighting control 125
Locking the vehicle 344
Sliding/pop-up roof* 348
Unlocking gear selector lever 347
Unlocking the driver’s door 343Manual shift program mode (CLK 55 AMG)
Downshifting 165
Upshifting 165
Manual shift programm CLK 55 AMG
Activating 164
Deactivating 165
Manual shift programm mode
CLK 55 AMG 164
MAXCOOL maximum cooling 177
Mechanical key 343
Memory function 116, 400
Recalling positions
from memory 117
Storing exterior rear view
mirror parking positions 118
Storing key-dependent settings 117
Page 422 of 440

422 IndexPassenger compartment 274
Fuse box in 372
Interior lighting 124
Interior rear view mirror 38
Parcel net in
front passenger footwell 247
Storage bags, rear side
of the front seats 247
Passenger safety see Occupant safety
Pedals 267
Phone book*
Loading 155
Quick search 156
Phone number*
Dialing 155
Redialing 156
Plastic and rubber parts
Cleaning 304
Playing
CDs 201
Poly-V-belt drive 400
Layout 379Positions (Memory function)
Recalling from memory 117
Storing into memory 117
Power assistance 267
Power seat
Adjusting backrest tilt 36
Adjusting head restraint height 36
Adjusting head restraint tilt 36
Adjusting seat cushion tilt 36
Adjusting seat height 36
Front seat head restraints 108
Seat fore and aft adjustment 35
Power train 400
Power washer 299
Power windows 210
Blocking of rear window operation 74
Side windows 210
Synchronizing 213Practical hints
First aid kit 337
Fuses 372
Lamp in center console 313
Lamps in instrument cluster 306
Messages in the display 314
Minispare wheel 340
Minispare wheel bolts 342
Towing the vehicle 368
Unlocking/locking
in an emergency 343
Vehicle jack 339
Vehicle tool kit 337
Premium unleaded gasoline 391
Problems
While driving 50
With vehicle 17
Product information 9
Program mode selector switch 400
Automatic transmission 163
Automatic transmission, CLK 55
AMG 164