2005 MERCEDES-BENZ C COUPE setting the temperature

199 Controls in detail
Audio system
Switching off
Remove SmartKey from starter switch.
or

Press M button.
Adjusting the volume

Turn rotary control of N button.
The volume will increase or decrease
depending on the direction turned.Adjusting sound functions
The bass and treble functions are called up
by pressing the O button.
Settings for bass and treble are stored sep-
arately for the AM and FM wavebands,
weather band, CD mode and telephone
mode.
Bass

Press O button repeatedly until BASS
appears in the display.

Press
+ or
– soft key to increase or
decrease tone level accordingly.
or

Press
RES
soft key briefly to reset bass
tones to their center level.
The radio switches back to the stan-
dard radio menu eight seconds after
the last soft key is pressed.
iShould excessively high temperatures
occur while the audio system is being
operated, the display will dim. If tem-
peratures continue to rise,
HIGH TEMP

will appear in the display, after which
the audio system will be switched off
for a cooling-down period.
iIf your vehicle equipment includes a
Mercedes-Benz specified mobile tele-
phone*, you can adjust its volume sep-
arately from the volume of the audio
system while the telephone is being
used.

438 Technical termsControl system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.
Cruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.
Curb weight
(
page 323)
DOT
(Department o
f Transportation)
(
page 323)
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP
(E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRSFSS (Canada vehicles)
(F
lexible S
ervice S
ystem)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. FSS evaluates
engine temperature, oil level, vehicle
speed, engine speed, distance driven
and the time elapsed since your last
maintenance service, and calls for the
next maintenance service accordingly.
GAWR
(G
ross A
xle W
eight R
ating)
(
page 323)
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the gear selector le-
ver.

445 Index
Audio system 195
Audio and telephone, operation 195
Button and soft key operation 198
CD* operation 213
Operating and display elements 196
Operating safety 195
Operation 198
Radio operation 203
Switching off 199
Switching on 198
Telephone* operation 220
Auto-dimming* for rear view mirror 168
Automatic central locking
Activating/deactivating (control
system) 148
Automatic climate control* 182
Activating 183
Adjusting air distribution 186
Air recirculation mode 189
Deactivating 183
Defrosting 188
Setting the temperature 185
Automatic headlamp mode 111
Automatic lighting control
Activating 117
Deactivating 117Automatic locking when driving 97
Automatic shift program*
Program mode selector switch 164
Automatic time change
(summer-/winter) 141
Automatic transmission* 159, 296
Accelerator position 165
Automatic shift program 164
Comfort program mode 164
Emergency operation (Limp Home
Mode) 166
Fluid level 296
Gear ranges 161
Gear selector lever 159
Gear selector lever position 159, 162
Gear shifting malfunctions 166
Kickdown 165
Manual shifting 160
One-touch gearshifting 160
Program mode selector switch 164
Starting with 49
Transmission fluid 296
Working on the vehicle 165B
Backrest
Folding forward 251
Folding rearward 251
Backup lamps
Bulbs 384
Bar 323
BAS 82, 437
Messages in display 354
Batteries, SmartKey
Check lamp 93
Checking 93
Replacing 382, 383
Battery discharged
Jump starting 404
Battery, vehicle 297, 401
Charging 402
Disconnecting 402
Reconnecting 403
Reinstalling 402
Removing 402
Bead 323
Bi-Xenon headlamps* 437
Bi-Xenon type*
Front lamp bulbs 388
Block heater 329

447 Index
Checking
Brake fluid 290
Coolant level 290, 296, 359
Headlamp cleaning fluid 290
Oil level 290, 292
Tire inflate pressure 290
Vehicle lighting 290
Windshield washer fluid 290
Child safety 70
Air bags 62
Front passenger front air bag off indica-
tor lamp 27, 76, 345
Infant and child restraint systems 66,
70
LATCH child seat anchors 78
OCS 73
Child seat anchors see LATCH child seat
anchors
Cigarette lighter 259
Cleaning
Cup holders 337
Gear selector lever 337
Hard plastic trim items 337
Headlamps 167
Headliner 337
Instrument cluster 337Leather upholstery 338
Light alloy wheels 336
MB Tex upholstery 338
Plastic and rubber parts 338
Seat belts 337
Steering wheel 337
Upholstery 338
Windows 336
Windshield 54
Wiper blades 336
Wood trims 338
Cleaning tires 302
Climate control 172
Adjusting air distribution and
volume 176
Defogging windshield 176
Defrosting 177
Rear window defroster 170
Setting the temperature 175
Clock 25, 139
Closing
Ashtray, center console 258
Cup holder 257
Glove box 254
Hood 292
Luggage compartment 95Panorama roof with power tilt/sliding
panel* in an emergency 381
Panorama roof with power tilt/sliding
panel* with SmartKey 244
Storage compartment, armrest 255
Trunk lid 95
Windows 238
Windows with SmartKey 239
Cockpit 22, 437
Cockpit management and data system
(COMAND*) 437
Cold tire inflation pressure 323
Collapsible tire 437
Collapsible wheel chock 375
COMAND* see separate operating
instructions 437
Combination switch 114
Turn signals 52
Windshield wipers 53
Comfort driving
Transmission program mode 164
Control and operation of radio
transmitters 284

451 Index
Engine oil 292, 428
Adding 294
Additives 428
Checking level 292
Consumption 292
Display messages 363–364
Filler neck 295
Messages in display 293, 363–364
Viscosity 438
Engine oil level see Oil level
ESP 25, 83, 438
Messages in display 355–356
Switching off 84
Switching on 85
Warning lamp 343
ETD 438
Safety guidelines 64
ETD (Emergency tensioning device) 69
Ethanol fuel
At the gas station 288
Switching fuels 431
Exterior lamp switch 110
Exterior lamps
Delayed shut-off 146
Exterior rear view mirror
Parking position* for 150Exterior rear view mirrors
Adjusting 42
F
Fahrenheit
Setting temperature units 137
Fastening the seat belts 44
Fine adjustment
Cruise control 249
First aid kit 373
Flat tire 394
Inflating the spare tire 398
Lowering the vehicle 400
Mounting the spare wheel 394
Preparing the vehicle 394
Spare wheel 375
Tighten wheel bolts 400
Flexible fuel vehicles 431
At the gas station 288
Switching fuels 431
Flexible Service System (Canada
vehicles) 330, 438
Fog lamp, rear
Message in display 368
Switching on 113Fog lamps, front
Messages in display 366
Replacing bulbs 385, 386
Switching on 113
Front air bags 65
Front lamps
Bi-Xenon* type 388
Halogen-type 386
Messages in display 366–370
Replacing bulbs 385, 386
Switching on 110
Front passenger front air bag off indicator
lamp 27, 76, 345
Front seat backrest
Folding backrest back 40
Folding backrest forward 39
Front seat head restraints
Installing 102
Power seat* 103
Manual seat 102
Power seat* 103
Removing 102
Power seat* 103
Front seats
Heating* 106

454 IndexInstrument cluster 24, 119, 439
Cleaning 337
Coolant temperature display 120
Illumination 119
Lamps in 343–344
Multifunction display 123
Outside temperature indicator 121
Selecting language 138
Instrument lighting 119
Instruments and controls see Cockpit
Interior lighting 117
Activating automatic control 117
Deactivating automatic control 117
Delayed shut-off (Control
system) 147
Manual operation 118
Interior rear view mirror
Adjusting 42
Antiglare (manual) 167
Interior storage spaces
Armrest 255
Cup holders 256
Intermittent wiping 54J
Jack 373
Jump starting 404
K
Key dependency memory
Settings 149
Key positions in starter switch 33
Key, mechanical 377
Key, SmartKey
Battery check lamp 92
Checking the batteries 93
Factory setting 92
Global locking 92
Global unlocking 92
Loss of 94
Messages in display 365
Positions in starter switch 33
Remote control 90
Restoring to factory setting 93
Selective setting 92
Starting the engine 48, 49
Unlocking with 32
Kickdown 165, 439
Kilometers/miles in speedometer 137
Kilopascal 324
Km/h or mph in speedometer 137L
Labels, identification 416
Lamp bulbs, exterior 384
Lamps, exterior
Front 385
Light sensor 367
Messages in display 366–370
Rear 385
Lamps, indicator and warning
ABS 340
Air bag Off 66
Battery (SmartKey) 92
Brake 25
Brakes 341
CHECK ENGINE 342
Engine diagnostics 342, 344
ESP 343
Fuel reserve 344
Instrument cluster 343–344
Low beam 25
Seat belts 344
Service indicator 330
SRS 61, 344
Language
Multifunction display 138
Setting 138

462 IndexService life (tires) 301
Service System see Flexible Service Sys-
tem (Canada vehicles)
Service System see Maintenance system
(USA vehicles)
Setting
Convenience functions 136, 148
Cruise control 248
Current speed 248
Date (day) 142
Date (month) 141
Date (year) 143
Daytime running lamp mode 144
Factory, SmartKey 92
Higher speed in cruise control 249
Hours (clock) 139
Individual vehicle settings 133
Instrument lighting 119
Key dependent memory 149
Lamps and lighting (control
system) 144
Language, multifunction display 138
Lighting (control system) 144
Locator lighting 145
Lower speed in cruise control 249
Menus and submenus 125Miles/kilometers in
speedometer 137
Minutes (clock) 140
Night security illumination 146
Parking position* for exterior rear view
mirror 150
Resetting all (control system) 133
Resetting in the submenu 135
Selective, SmartKey 92, 149
Speed in cruise control 249
Speedometer display mode 137
Temperature (interior) 185
Climate control 175
Temperature indicator 137
Time display mode (Clock) 141
Units
Speedometer 137
Temperature 137
Settings menu
Functions in 133
Individual vehicle settings 133
Submenus 134
Shift lock 441Shifting
Gear selector lever 159
Gear selector lever positions 162
Into optimal gear range (Automatic
transmission*) 161
Into reverse (Manual
transmission) 158
Side impact air bags 66
Side marker lamp
Replacing bulbs 391
Side marker lamps
Replacing bulbs 385, 390
Side markers
Cleaning 335
Side windows
Automatic opening 238
Cleaning 336
Closing 237, 238, 239
Closing fully 238
Closing with SmartKey 239
Opening 237, 238, 239
Opening fully 238
Opening with SmartKey 239
Stopping 239
Synchronizing power windows 240

465 Index
Tele Aid*
Emergency calls 263
Information 266
Initiating an emergency call
manually 264
Message in display 372
Remote door unlock 268
Roadside assistance 265
SOS button 264
Stolen vehicle tracking services 269
System self-check 262
Tele Aid System 262
Upgrade signals 267
Telephone* 26, 260
Answering a call 154
Dialing a number from the phone
book 154
Ending a call 154
Hands-free microphone 29
Loading phone book 154
Message in display 372
Operation 153, 220
Redialing 156Temperature
Display mode 137
Setting interior temperature 175
Setting units in display 137
Tires 310
Tie-down rings 253
Tightening torque 441
Tilt
Head restraint 37, 39
Time
Setting hours 139
Setting minutes 140
Time display
Setting 141
TIN 325
Tire
Vehicle maximum load on 326
Tire and Loading Information 304
Tire and loading terminology 323
Tire care and maintenance 301
Tire Identification Number see TIN
Tire inflation pressure
Checking 290, 309, 311
Tire inspection 301
Tire load rating 325Tire ply composition and material
used 325
Tire speed rating 282, 316, 325, 441
Tire terminology 323
Tire traction 281
Tires 300, 419
Collapsible 437
Direction of rotation 303
Driving instructions 280
Retreads 300
Rims and tires 419
Rotating 326
Service life 301
Temperature 310, 322
Tread depth 302, 328
Wear pattern 326
Winter 328
Tools 373
Tow-away alarm 27, 87
Arming 87
Disarming 87
Disarming for transport 87
Towing eye bolt (vehicle tool kit)
Installing 409
Towing the vehicle 406