
Locking/unlocking from inside ........75
SmartKey  ......................................... 70
Central locking/unlocking switch  ..... 75
Certification label  .............................. 332
Children in the vehicle  
Air bags  ........................................... 37
BabySmart™ air bag deactivation
system  ............................................. 46
Child safety locks (rear doors)  .........59
Child seat anchors – LATCH-type
(ISOFIX)  ........................................... 58
Indicator lamp, front passenger
front air bag off (Canada only)  .........46
Indicator lamp, front passenger
front air bag off (USA only)  ..............42
Infant and child restraint systems .... 55
ISOFIX (Child seat anchors –
LATCH-type) ..................................... 58
OCS (Occupant Classification
System)  ........................................... 42
Override switch  ................................ 59
Safety notes ..................................... 54
Tether anchorage points  ..................57
Top tether  ........................................ 57
Child safety
see Children in the vehicle                        
Child seat anchors – LATCH-type
(ISOFIX) see Children in the vehicle                        
Chrome-plated exhaust tip,
cleaning  .............................................. 266
Cigarette lighter  ................................ 209
Clear button  ....................................... 142
Climate control system  
Air conditioning  ............................. 191
Air conditioning refrigerant  ............354
Air distribution  ............................... 194
Air recirculation mode  ...................195
Air volume  ..................................... 194
Automatic mode  ............................ 192
Deactivating system  ......................191
Front defroster  .............................. 194
Maximum cooling MAX COOL  ........195
Temperature  .................................. 192
Clock  ............................................ 29, 132
Cockpit  ................................................. 27
Cold tire inflation pressure  .............. 250
Collapsible wheel chock  ................... 269COMAND system
see separate COMAND system
operating instructions                               
Combination gauge  ............................. 28
Combination switch  ............................ 93
Compass  ............................................ 210
Control system  .................................. 118
Multifunction display  .....................120
Multifunction steering wheel  .........118
Resetting to factory settings  ..........130
Control system menus  ...................... 121
AMG ............................................... 123
Audio  ............................................. 126
Navi  ............................................... 126
Service ........................................... 129
Settings  ......................................... 130
Telephone  ...................................... 128
Trip  ................................................ 121
Control system submenus  
Convenience  .................................. 135
Instrument cluster  .........................131
Lighting  .......................................... 133
Time/Date  ..................................... 132
Vehicle  ........................................... 135
Convenience submenu  
Easy-entry/exit feature .................. 136
Fold-in function for exterior rear
view mirrors  ................................... 136
Coolant  
Anticorrosion/antifreeze  ...............357
Capacities  ...................................... 351
Checking level  ............................... 227
Messages in the multifunction
display  ........................................... 288
Temperature gauge ........................ 117
Warning lamp ................................. 305
Coolant temperature gauge  ............... 28
Corner-illuminating front fog
lamps  .................................................... 94
Cruise control  .................................... 180
Activating ....................................... 181
Canceling  ....................................... 181
Changing the set speed  .................182
Last stored speed  ..........................183
Lever .............................................. 181
Messages in the multifunction
display  ........................................... 2756Index204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 6 

Resume function ............................ 183
Setting current speed  ....................181
Cup holders  ........................................ 207
Curb weight  ....................................... 250
Customer Assistance Center (CAC)  ... 23
Customer Relations Department  ....... 23
D
Dashboard see Instrument cluster                              
Data recording  ..................................... 23
Date, Setting  ...................................... 133
Daytime running lamp mode  .............. 91
Switching on or off ......................... 133
Deep water
see Standing water                                   
Defogging (windshield)  ..................... 195
Defroster  
Front (Climate control system)  ......194
Rear window  .................................. 196
Delayed shut-off  
Exterior lamps ................................ 134
Interior lighting  .............................. 135
Department of Transportation
see DOT                                                    
Difficulties  
While driving  .................................. 104
With starting  .................................. 102
Dimensions (vehicle)
see Vehicle specification                          
Direction of rotation (tires)  .............. 242
Displays  
Maintenance service indicator  .......259
Messages in the multifunction
display  ........................................... 270
Multifunction display  .....................120
Symbol messages  ..........................279
Text messages  ............................... 272
Trip computer  ................................ 121
Vehicle status message memory  ...129
Vehicle system settings  .................130
Door control panel  .............................. 33
Door handles  ........................................ 33
Doors  
Child safety locks  ............................ 59
Locking/unlocking (KEYLESS-GO)  ...71
Locking/unlocking (SmartKey)  ........70
Messages in the multifunction
display  ........................................... 286
Opening from inside ......................... 74
Remote door lock (Tele Aid) ........... 216
Remote door unlock (Tele Aid)  .......215
Unlocking (Mechanical key)  ...........309
DOT (Department of
Transportation)  .................................. 250
Drinking and driving  ......................... 254
Driving  
Abroad  ........................................... 257
Hydroplaning  ................................. 257
Instructions  ........................... 101, 254
In winter  ........................................ 253
Problems  ....................................... 104
Safety systems  ................................ 60
Systems  ......................................... 180
Through standing water  .................257
Driving and parking  
Safety notes  .................................. 101
Driving off  .................................. 103, 257
Driving safety systems  ....................... 60
ABS  .................................................. 61
Adaptive Brake  ................................ 62
BAS  .................................................. 61
EBP  .................................................. 62
ESP ®
 ................................................ 62
ETS/4-ETS  ....................................... 63
Driving systems  
All-wheel drive (4MATIC) ................ 183
Cruise control  ................................ 180
Dynamic handling package with
sport driving mode  .........................184
Hill-start assist system  ..................183
Parktronic system  ..........................185
Rear view camera  .......................... 188
Driving tips, automatic
transmission  ...................................... 110
Dynamic handling package with
sport driving mode  ............................ 184
E
E85 (ethanol fuel)  .............................. 355
Easy-entry/exit feature  .............. 85, 136
EBP (Electronic Brake
Proportioning)  ...................................... 62
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Electrical system 
Improper work on or
modifications  ................................... 22
Power outlets ................................. 210
Electrical system (Technical data)
see Vehicle specification                          
Electronic Stability Program
see ESP ®
                                                  
Electronic Traction System
see ETS/4-ETS                                          
Emergency, in case of  
First aid kit ..................................... 268
Flat tire  .......................................... 317
Hazard warning flasher  ....................93
Roadside Assistance ................ 21, 214
Towing the vehicle  .........................325
Emergency calls  
Tele Aid  .......................................... 212
Telephone  ...................................... 173
Emergency operations  
Remote door lock (Tele Aid) ........... 216
Remote door unlock (Tele Aid)  .......215
Trunk lid, emergency release  ...........76
Emergency Tensioning Device
see ETD                                                     
Emission control  ............................... 258
Information label ............................ 333
System warranties  ...........................20
Engine  
Break-in recommendations  ............222
Cleaning ......................................... 262
Compartment  ................................ 224
Malfunction indicator lamp  ............305
Messages in the multifunction
display  ........................................... 288
Number .......................................... 333
Starting  .......................................... 101
Turning off  ..................................... 106
Engine (Technical data)
see Vehicle specification                          
Engine coolant
see Coolant                                               
Engine oil  
Adding  ........................................... 226
Additives  ........................................ 353
Checking level  ............................... 226
Consumption  ................................. 225Messages in the multifunction
display  ........................................... 291
Oil dipstick ..................................... 226
Recommended engine oils and oil
filter  ............................................... 353
ESP ®
 (Electronic Stability
Program)  .............................................. 62
ETS/4-ETS  ....................................... 63
Messages in the multifunction
display  ........................... 280, 281, 283
Warning lamp ................................. 302
ETD (Emergency Tensioning
Device)  ................................................. 52
Safety guidelines  ............................. 39
Ethanol fuel (E85)  .............................. 355
ETS/4-ETS (Electronic Traction
System)  ................................................ 63
Express operation  
Panorama roof  ............................... 200
Power windows  ................................ 98
Tilt/sliding sunroof  ........................196
Exterior lamp switch  ........................... 90
Exterior rear view mirrors  .................. 86
Fold-in function  ................................ 88
Parking position  ............................... 87
Power-folding  ................................... 88
Switching fold-in function on or
off  .................................................. 136
Exterior view of vehicle  ...................... 26
F
Fastening the seat belts  ..................... 50
First aid kit  ......................................... 268
Flat tire  ............................................... 317
Lowering the vehicle  ......................321
Mounting the spare wheel  .............318
Preparing the vehicle  .....................318
Spare wheel ........................... 317, 349
Flexible Fuel Vehicles  ....................... 355
Floormats  ........................................... 220
Fluids  
Automatic transmission fluid  .........350
Brake fluid  ..................................... 351
Capacities  ...................................... 349
Engine coolant  ............................... 351
Engine oil  ....................................... 350
Manual transmission oil  .................350
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Power steering fluid .......................351
Washer and headlamp cleaning
system  ........................................... 352
Fog lamps  ............................................. 92
Messages in the multifunction
display  ................................... 292, 294
Fold-in function for exterior rear
view mirrors  ........................................ 88
Four-wheel drive see All-wheel drive (4MATIC)                    
Front air bags
see Air bags                                              
Front axle oil  ...................................... 351
Front lamps see Headlamps                                         
Front passenger front air bag  ............ 40
Messages in the multifunction
display  ........................................... 272
Front passenger front air bag off
indicator lamp (Canada only)  ..... 46, 307
Front passenger front air bag off
indicator lamp (USA only)  .......... 42, 308
Front seat head restraints see Head restraints                                   
Fuel  ..................................................... 222
Additives  ........................................ 355
Capacity, fuel tank  .........................352
Drive sensibly–safe fuel  .................254
Ethanol fuel (E85)  .......................... 355
Fuel consumption (Flexible Fuel
Vehicle) .......................................... 355
Fuel consumption statistics  ...........122
Fuel filler flap and cap  ...................223
Fuel tank reserve warning lamp  .....304
Premium unleaded gasoline  ...........354
Refueling ........................................ 222
Requirements  ................................ 354
Switching (Flexible Fuel Vehicle) .... 355
Fuel filler flap  ..................................... 223
Opening manually  ..........................310
Fuel gauge  ................................... 28, 118
Fuels, coolants, lubricants etc.  ........ 349
Fuel tank  
Capacity  ........................................ 352
Fuel filler flap and cap  ...................223
Refueling ........................................ 222
Fuses  .................................................. 328G
Garage door opener  .................... 32, 216
Gasoline see Fuel                                                     
GAWR (Gross Axle Weight Rating)  ... 251
Gear range  ......................................... 111
Indicator  ........................................ 111
Limiting  .......................................... 112
Shifting into optimal  ......................113
Gear selector lever  ............................ 108
Cleaning ......................................... 265
Gearshift pattern  ........................... 108
Lock  ...................................... 102, 108
Shifting procedure  .........................109
Transmission position indicator  .....109
Transmission positions  ..................109
Gearshift lever  ................................... 107
Gearshift pattern  ........................... 107
Generator
see Alternator                                           
Global locking/unlocking
see Key, SmartKey                                    
Glove box  ........................................... 205
Gross Axle Weight Rating see GAWR                                                 
Gross Vehicle Weight
see GVW                                                    
Gross Vehicle Weight Rating
see GVWR                                                 
GVW (Gross Vehicle Weight)  ............ 251
GVWR (Gross Vehicle Weight
Rating)  ................................................ 251
H
Halogen headlamps see Headlamps                                         
Hard plastic trim items, cleaning  .... 265
Hazard warning flasher  ....................... 93
Headlamp cleaning system  ................ 93
Headlamps  
Active Bi-Xenon headlamps  .............90
Automatic headlamp mode  ..............91
Bi-Xenon  .................................. 90, 314
Cleaning lenses  ............................. 263
Cleaning system  .............................. 93
Daytime running lamp mode  ............91
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Delayed shut-off ............................ 134
Halogen  ......................................... 314
High-beam flasher ............................ 93
High-beam headlamps  .....................93
Low-beam headlamps  ......................91
Messages in the multifunction
display  ........................................... 292
Replacing bulbs  ............................. 313
Switch  .............................................. 90
Headliner and shelf below rear
window, cleaning and care of  .......... 265
Head restraints  .................................... 79
Adjustment  ................................ 79, 82
Folding back  .................................... 83
NECK-PRO active front head
restraints  ......................................... 52
Rear seat head restraints ................. 83
Height adjustment  
Seat belt outlet  ................................ 51
Seats  ............................................... 79
High-beam flasher  ............................... 93
High-beam headlamps  ................ 93, 314
High-performance brake system  ..... 256
Hill-start assist system  ..................... 183
Hood  ................................................... 224
Messages in the multifunction
display  ........................................... 286
Horn  ...................................................... 27
Hydroplaning  ..................................... 257
I
Identification labels  .......................... 332
Identification number, vehicle
(VIN)  ................................................... 333
Ignition  ......................................... 78, 102
Immobilizer  .......................................... 66
Infant and child restraint systems see Children in the vehicle                        
Inflation pressure
see Tires, Inflation pressure                      
Inside door handle  .............................. 74
Instrument cluster  ...................... 28, 116
Illumination  .................................... 117
Lamps  ............................................ 297
Multifunction display  .....................120
Instrument lighting
see Instrument cluster, Illumination         
Instrument panel
see Instrument cluster                              
Instruments and controls
see Cockpit                                               
Interior lighting  
Delayed shut-off  ............................ 135
Emergency lighting  ..........................95
Front  ................................................ 95
Front reading lamps  .........................95
Rear  ................................................. 95
Rear reading lamps  ..........................95
Interior rear view mirror  ..................... 86
Auto-dimming rear view mirrors ....... 87
Interior storage spaces
see Storage compartments                      
Intermittent wiping  ............................. 96
Rain sensor  ...................................... 96
ISOFIX (Child seat anchors –
LATCH-type) see Children in the vehicle                        
J
Jack  ..................................................... 269
Jump starting  ..................................... 323
K
Key, Mechanical  
Loss of  ............................................. 73
Replacing  ......................................... 74
Unlocking/locking manually  ..........309
Valet locking  .................................... 77
Key, SmartKey  
Battery check lamp  ..........................73
Checking batteries  ...........................73
Factory setting ........................... 71, 73
Global locking (KEYLESS-
GO)  .................................................. 73
Global locking (SmartKey) ................ 71
Global unlocking (KEYLESS-
GO)  .................................................. 73
Global unlocking
(SmartKey)  ....................................... 71
Important notes on KEYLESS-GO  .....72
Locking/unlocking ........................... 70
Loss of  ............................................. 73
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Power assistance .............................. 255
Power outlets  .................................... 210
Power seats see Seats                                                  
Power steering  
Messages in the multifunction
display  ........................................... 288
Power tilt/sliding sunroof  
Operation ....................................... 196
Synchronizing  ................................ 199
Power washer  .................................... 261
Power windows  ................................... 98
Cleaning ......................................... 264
Operation  ......................................... 98
Rear door window, override
switch  .............................................. 59
Synchronizing  .................................. 99
Practical hints  ................................... 268
Problems  
While driving  .................................. 104
With vehicle  ..................................... 23
With wipers  ...................................... 97
Product information  ............................ 20
Production options weight  ............... 251
Program mode selector switch  
Automatic shift program  ................111
Manual shift program  ............113, 114
Proximity key
see Key, SmartKey                                    
PSI (air pressure unit)  ....................... 251
R
RACETIMER  ........................................ 124
Radio  .................................................. 148
Satellite radio  ................................ 152
Selecting stations  ..........................126
Radio transmitters  ............................ 258
Rain sensor see Intermittent wiping                             
Rear axle oil  ....................................... 351
Rear center console ashtray see Ashtrays                                             
Rear doors  
Child safety locks  ............................ 59
Rear door window  
Override switch  ................................ 59
Rear fog lamp
see Fog lamps                                           
Rear lamps
see Tail lamps                                           
Rear seat head restraints
see Head restraints                                   
Rear view camera  .............................. 188
Cleaning the camera lens  ..............263
Rear window defroster  ..................... 196
Recommended tire inflation
pressure  ..................................... 230, 251
Refrigerant, air conditioning  ............ 354
Refueling  ............................................ 222
Regular checks  .................................. 224
Reminder, Seat belt see Seat belts, Telltale                              
Remote control
see Key, SmartKey                                    
Remote door lock (Tele Aid)  ............. 216
Remote door unlock (Tele Aid)  ......... 215
Replacing  
Key  .................................................. 74
Replacing bulbs  ................................. 313
Reporting safety defects  .................... 23
Research Octane Number see RON                                                    
Reserve fuel  
Messages in the multifunction
display  ........................................... 291
Warning lamp ................................. 304
Restraint systems
see Occupant safety                                 
Retaining hooks  ................................. 203
Rims  ........................................... 251, 344
Roadside Assistance  ................... 21, 214
Roller sunblinds  ................................. 199
RON (Research Octane Number)  ..... 354
Roof rack  ............................................ 203
Rubber parts, cleaning  ...................... 265
S
Safety  
Driving safety systems  .....................60
Occupant safety ............................... 36
Reporting defects  ............................ 23
Safety belts
see Seat belts                                           
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Sun visors .......................................... 208
T
Tachometer  .................................. 28, 117
Overspeed range  ........................... 117
Tail lamps  ........................................... 314
Cleaning lenses  ............................. 263
Messages in the multifunction
display  ........................................... 295
Replacing bulbs  ............................. 314
Tar stains  ........................................... 261
Technical data  
Air conditioning refrigerant  ....352, 354
Brake fluid  ............................. 351, 354
Capacities fuels, coolants,
lubricants etc.  ................................ 349
Coolant  .................................. 351, 356
Engine oil additives  ........................353
Engine oils  ............................. 350, 353
Fuel requirements .......................... 354
Gasoline additives .......................... 355
Identification labels  .......................332
Premium unleaded gasoline  ...........354
Rims and tires  ................................ 344
Spare wheel  ................................... 349
Vehicle specification C 250  ...........334
Vehicle specification
C 250 4MATIC  ............................... 335
Vehicle specification
C 250 4MATIC Sport ...................... 336
Vehicle specification C 250 Sport .. 334
Vehicle specification C 300  ...........337
Vehicle specification
C 300 4MATIC  ............................... 339
Vehicle specification
C 300 4MATIC Sport ...................... 340
Vehicle specification C 300 Sport .. 338
Vehicle specification C 350  ...........341
Vehicle specification
C 350 4MATIC  ............................... 343
Vehicle specification C 350 Sport .. 342
Vehicle specification C 63 AMG ..... 343
Washer and headlamp cleaning
system  ................................... 352, 358
Technical data (dimensions)
see Vehicle specification                          
Technical data (electrical system)
see Vehicle specification                          
Technical data (engine)
see Vehicle specification                          
Technical data (weights)
see Vehicle specification                          
Tele Aid  ............................................... 211
Emergency calls  ............................. 212
Information button  .........................215
Initiating an emergency call
manually  ........................................ 213
Messages in the multifunction
display  ........................................... 284
Remote door lock  .......................... 216
Remote door unlock  ......................215
Roadside Assistance button  ..........214
Search & Send  ............................... 215
SOS button  .................................... 213
Stolen Vehicle Recovery Services  ..216
System self-test  ............................. 212
Telephone  .......................................... 167
Answering/ending a call  ................128
Call lists  ......................................... 176
Emergency calls “911”  ..................173
Hands-free microphone  ...................33
Making calls ................................... 177
Menu  ............................................. 128
Operation ....................................... 128
Phone book  ........................... 128, 174
Redialing  ........................................ 129
Temperature  
Coolant  .......................................... 117
Interior temperature  ......................192
Outside  .......................................... 118
Tether anchorage points
see Children in the vehicle                        
Tie-down rings  ................................... 203
Tightening torque  
Wheels  ........................................... 321
Time setting  ....................................... 132
TIN (Tire Identification Number)  ...... 252
Tire and Loading Information
placard  ............................................... 238
Tire and loading terminology  ........... 250
Tire Identification Number see TIN                                                      16Index204_AKB; 5; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T17:54:06+02:00 - Seite 16 

Tire inflation pressure 
Checking ........................................ 232
Important notes on  ........................231
Label on the inside of fuel filler
flap  ................................................ 231
Placard on driver’s door B-pillar  .....238
Tire labeling  ....................................... 246
Tire load rating  .................................. 251
Tire ply composition and material
used  .................................................... 252
Tire pressure loss warning system  . 233
Tires  ........................................... 229, 344
Advanced Tire Pressure
Monitoring System (Advanced
TPMS)  ............................................ 234
Air pressure  ................................... 230
Care and maintenance  ...................243
Cleaning ......................................... 244
Direction of rotation, spinning  .......242
Important notes on tire inflation
pressure  ........................................ 231
Inflation pressure  ........................... 232
Information placard  .......................238
Inspection  ...................................... 243
Labeling  ......................................... 246
Load index  ............................. 246, 251
Load rating  .................................... 251
Messages in the multifunction
display  ................................... 276, 296
Ply composition and material
used ............................................... 252
Problems under-/overinflation  ......232
Retreads  ........................................ 229
Rims and tires (technical data)  ......344
Rotation  ......................................... 245
Service life  ..................................... 243
Sizes  .............................................. 344
Snow chains  .................................. 253
Speed rating  .......................... 247, 252
Storing  ........................................... 244
Temperature  .......................... 231, 245
Terminology  ................................... 250
Tire Identification Number  .............252
Tire pressure loss warning system . 233
TPMS low tire pressure/
malfunction telltale  ........................306
Traction  ................................. 244, 252
Tread  ............................................. 252Tread depth ........................... 243, 252
Treadwear  ...................................... 244
Treadwear indicators  .............243, 252
Vehicle maximum load on  ..............252
Wear pattern  .................................. 245
Winter tires  ............................ 252, 344
Tire speed rating  ....................... 247, 252
Top tether see Children in the vehicle                        
Total load limit  ................................... 252
Towing  
Towing eye bolt .............................. 326
Vehicle  ........................................... 325
Towing eye bolt  ................................. 326
Traction  ...................................... 244, 252
Transfer case  ..................................... 116
Transmission see Automatic transmission or
Manual transmission                                 
Transmission fluid level  .................... 227
Transmission gear selector lever see Gear selector lever                             
Transmission positions  .................... 109
Traveling abroad  ............................... 257
Tread (tires)  ....................................... 252
Tread depth (tires)  .................... 243, 252
Treadwear  .......................................... 244
Treadwear indicators (tires)  .... 243, 252
Trip menu  ........................................... 121
Trunk  
Closing  ............................................. 76
Fuse box  ........................................ 329
Messages in the multifunction
display  ........................................... 286
Opening  ........................................... 75
Tie-down rings  ............................... 203
Trunk lid emergency release  ............76
Unlocking manually  .......................309
Valet locking  .................................... 77
Turning off the engine  ...................... 106
Turn signals  ......................................... 93
Cleaning lenses  ............................. 263
Indicator lamps  ................................ 28
Messages in the multifunction
display  ........................................... 296
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