Page 372 of 442
370 Practical hintsFusesMain fuse box in passenger compartment
The main fuse box is located in the passen-
ger compartment on the driver’s side of 
the cockpit.
1Main fuse box cover
Opening fuse box
Open the driver’s door.
Pull fuse box cover1 open with a 
screw driver or similar tool (see arrow).
Remove fuse box cover1 rearward.Closing fuse box
Attach fuse box cover1 in the front.
Fold fuse box cover1 in until it 
engages.
Fuse box in engine compartment
The fuse box is located in the engine 
compartment on the driver’s side.
1Cover
2Screws
3RetainerRemoving cover
Twist screws2 
90° counterclockwise.
Lift the rear of cover1.
Slide out retainer3 and remove 
cover1 by pulling towards front.
Opening fuse box
4Fuse box cover
5Clamps
With a dry cloth, remove any moisture 
from the fuse box.
Release clamps5.
Remove fuse box cover4. 
     
        
        Page 373 of 442
371 Practical hintsFuses
Closing fuse box
Make sure that the sealing rubber is 
properly positioned.
Press fuse box cover4 down and 
secure with clamps5.
Installing cover
Insert cover1 sideways into 
retainer3.
Twist screws2 90° clockwise.
Fuse box in trunk
The fuse box is located in the trunk behind 
the left-hand trim panel.
1Trim panel
2Fuse extractor
3Fuse box coverOpening fuse box
Pull away trim panel1.
Remove fuse box cover3.
Closing fuse box
Insert fuse box cover3 until it 
engages.
Insert trim panel1. 
     
        
        Page 408 of 442

406 Index
Multicontour seat* 104
Placing upright rear seat 
head restraints 102
Power seat* 38
Rear seat head restraints 101
Seat belt height 45
Seat cushion depth 104
Seat cushion tilt, manual seat 36
Seat cushion tilt, power seat* 38
Seat fore and aft adjustment, 
manual seat 36
Seat fore and aft adjustment, 
power seat* 38
Seat height, manual seat 36
Seat height, power seat* 38
Seats 35
Steering column height, 
electrical* 41
Steering column height, 
manual 40
Steering column length, 
electrical* 41
Steering column length, 
manual 40
Steering wheel 39Adjusting air distribution 
and volume 178
Adjusting sound functions 187
Adjusting the volume 187
Aids for changing fuses 369
Air bags 59
BabySmart
TM deactivation 
system 70, 399
Children 60
Front 63
Passenger 63
Safety guidelines 62
Side impact 64
Window curtain 64
Air conditioning (cooling) 181
Turning off 181
Turning on 181
Air conditioning refrigerant 390
Air distribution
Adjusting 178
Air pressure see Tire inflation pressure
Air pump, electric
Turning on 358Air recirculation mode 179
Activating 179
Deactivating 180
Air vents, rear passenger compartment
Adjustable 182
Air volume
Adjusting 178
Alarm
Audible 76, 83
Canceling 84, 86
Visual 83
Alarm system
Anti-theft* 83
Tow-away* 85
Alignment bolt (vehicle tool kit) 355, 399
Anticorrosion/antifreeze 395
Antiglare
Automatic* 169
Manual 168
Antilock Brake System see ABS
Anti-theft alarm system*
Arming 84
Canceling alarm 84
Disarming 84 
     
        
        Page 415 of 442

413 Index
Symbol messages 314
Text messages 310
Vehicle status messages 309
Distance to empty (range)
Calling up 150
Door control panel 30
Door entry lamps 116
Door handle 92
Door unlock
With Tele Aid* 255
Doors
Message in display 319
Opening from inside vehicle 92
Opening from the outside 89
Downhill driving
Cruise control 232
Downshifting 158
Manual transmission 155
Drink holder see Cup holders
Drinking and driving 265Driving
Driving abroad 272
General instructions 43, 265
Hydroplaning 268
In winter 270
Problems 53
Safety systems 77
Through standing water 271
Driving abroad 272
Driving instructions 265
Driving off 267
Driving safety systems
4MATIC 82
ABS 77
BAS 78
ESP 79
Driving systems 231
Cruise control 231
Driving safety systems 77E
Easy-entry/exit feature* 98
Activating 146
Electrical fuses 369
Electrical outlet in 
rear passenger compartment 247
Electrical system
Technical data 384
Electronic Stability Program see ESP
Emergency call
911 221
Emergency call system* 249
Emergency calls
Initiating an emergency call 251
With Tele Aid* 250
Emergency operation 
(Limp Home Mode) 167
Emergency operations
Closing power tilt/sliding 
sunroof* 341
Locking the vehicle 338
Opening power tilt/sliding 
sunroof* 341 
     
        
        Page 416 of 442

414 Index
Releasing trunk lid from inside 95
Remote door unlock 255
Unlocking the vehicle 337
Emergency Tensioning Device see ETD
Emission control 273
Emission control information label 376
Ending
A call (telephone*) 152
Engine
Compartment 278
Starting with automatic 
transmission* 47
Starting with manual 
transmission 46
Starting with the SmartKey, 
automatic transmission* 47
Starting with the SmartKey, 
manual transmission 46
Technical data 378
Turning off with the SmartKey 56
Engine cleaning 297Engine compartment 278
Fuse box in 370
Hood 278
Engine malfunction 
indicator lamp 25, 304
Engine number 376, 400
Engine oil 279
Adding 281
Additives 390
Checking level 277, 280
Consumption 279
Display messages 280, 320–321
Filler neck, 
C 230 Kompressor 
(all models) 282
Filler neck, 
C 240 (all models), 
C 320 (all models), 
C 55 AMG 282
Messages in display 280, 320–321
Viscosity 400Engine oil level
Checking 277, 280
Engine oils 390
ESP 79, 400
Four wheel electronic traction 
system with ESP 82
Messages in display 312–313
Switching off 80
Switching on 81
Warning lamp 25, 306
ETD 67, 400
Safety guidelines 62
Ethanol fuel
At the gas station 275
Requirements 392
Switching fuels 393
Exterior lamp switch 49, 109
Exterior lamps
Delayed shut-off 143
Exterior rear view mirrors
Adjusting 41
Parking position* for 148 
     
        
        Page 418 of 442

416 IndexFuel cap
Message in display 305, 322
Fuel consumption statistics
After start 149
Since last reset 149
Fuel filler flap 275
Locking 275
Opening in an emergency 339
Unlocking 275
Fuel gauge 25
Fuel requirements 391
For ethanol fuel 392
Fuel reserve
Warning lamp 25
Fuel tank
Capacity 388
Filler flap 275
Fuels, coolants, lubricants etc.
Capacities 387
Functions (control system) 122, 125
Resetting 133Fuse box
In engine compartment 370
In trunk 371
Fuse chart 369
Fuse extractor 369, 371
Fuses 369
Aids for changing fuses 369
Fuse box in engine compartment 370
Fuse box in trunk 371
Fuse chart 369
Fuse extractor 369, 371
Main fuse box in 
passenger compartment 370
Spare fuses 369
G
Garage door opener* 256
Gasoline additives 392
Gasoline see Fuel
Gear range 400
Automatic transmission* 159
Limiting 159
Shifting into optimal 158Gear range limit
Canceling 158
Gear selector lever 47, 156
Cleaning 299
Lock 47
Position (Automatic 
transmission*) 121, 160
Position (automatic 
transmission*) 156
Gearshift lever 46, 155
Global
Locking 89
Unlocking 89
Global Positioning System see GPS
Glove box 241
Closing 241
Locking 241
Opening 241
Unlocking 241
Good visibility 168
GPS 400 
     
        
        Page 422 of 442

420 IndexLight sensor 324
Lighter see Cigarette lighter
Lighting 109
Automatic headlamp mode 110
Combination switch 113
Daytime running lamp mode 111
Door entry lamps 116
Exterior lamp switch 109
Front fog lamps 112
High beams 113
Instrument cluster illumination 117
Instruments 117
Interior 115
Locator lighting 112
Low beam 109
Manual headlamp mode 110
Night security illumination 112
Parking lamps 109
Rear fog lamp 113
Settings (control system) 141
Standing lamps 109
Trunk lamp 116Limiting the gear range 159
Limp Home Mode 167
Loading 234
Cargo tie-down rings* 240
Instructions 239
Roof rack* 234
Split rear bench seat* 237
Locator lighting 112
Setting 143
Lock button 401
Locking 54, 88
Automatic while driving 96
Centrally from inside 96
Fuel filler flap 275
Global, SmartKey 89
Glove box 241
Vehicle in an emergency 338
Loss of keys 91
Loss of Service and Warranty 
Information Booklet 375
Low beam headlamps
Indicator lamp 25
Messages in display 324–325
Replacing bulbs 345, 347
Switching on 49Lowering
Vehicle 359
Lubricants
Technical data 387
M
Main dimensions 385
Main fuse box
In passenger compartment 370
Mainodometer 121
Maintenance 12, 292
Vehicles with E85 fuel 393
Maintenance service
Calling up the maintenance 
service indicator 293
Major service (Service B) 292
Minor service (Service A) 292
Overdue 293
Types 293
When due 292
Maintenance service indicator 292
Calling up 293, 294
Clearing 293, 294
Maintenance System 
(U.S. vehicles) 292, 401 
     
        
        Page 426 of 442

424 IndexPassenger compartment 272
Interior lighting 115
Interior rear view mirror 41
Main fuse box in 370
Parcel net in front passenger 
footwell 245
Passenger safety see Occupant safety
Pedals 265
Performance
In cold weather 393
In hot weather 393
Phone book*
Loading 152
Quick search 153
Phone number*
Dialing 152
Redialing 153
Plastic and rubber parts
Cleaning 300
Playing
CDs 204Poly-V-belt drive 401
Layout 377
Positions (Memory function*)
Recalling from memory 107
Storing into memory 107
Power assistance 265
Power seat*
Adjusting backrest tilt 38
Adjusting head restraint height 38
Adjusting head restraint tilt 39
Adjusting seat cushion tilt 38
Adjusting seat height 38
Memory function* 106
Removing/installing front 
head restraints 100
Seat fore and aft adjustment 38
Power tilt/sliding sunroof* 227
Power train 402
Power washer 296Power windows 223
Blocking of rear door 
window operation 75
Side windows 223
Synchronizing 226
Practical hints
Collapsible tire (C 55 AMG only) 334
Collapsible wheel chock 332
First aid kit 329
Fuses 369
Lamp in center console 308
Lamps in instrument cluster 302
Minispare wheel 
(except C 55 AMG) 333
Spare wheel bolts 336
Symbol messages 314
Text messages 310
Towing the vehicle 365
Vehicle jack 329, 331
Vehicle status messages 
in the display 309
Vehicle tool kit 329