Page 351 of 426
349 Practical hints
Battery
Reconnecting the battery
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Connect the battery positive lead and
fasten its cover2.
Connect the battery negative lead.
Reinstall the filter box (
page 347).Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12 volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
!NEVER invert the terminal connections.!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be
carried out following any interruption of
battery power (e.g. due to reconnec-
tion):
Set the clock (
page 135).
Vehicles with COMAND*:
See COMAND operator’s manual.
Synchronize side windows
(page 218).
Synchronize tilt/sliding sunroof*
(page 222).
Page 398 of 426

396 IndexChecking
Brake fluid 269
Coolant level 269, 275
Engine oil level 269, 272
Tire inflation pressure 269
Vehicle lighting 269
Washer reservoir level 269
Child safety 69
Air bags 62
Infant and child
restraint systems 66, 69
LATCH-type child seat anchors 75
Child safety switch see
Blocking of rear door window operation
Child seat anchors see
LATCH-type child seat anchors
Cigarette lighter 239
Cleaning
Cloth upholstery 292
Cup holders 291
Gear selector lever 291
Hard plastic trim items 291Headlamps 161
Headliner and shelf below
rear window 291
Instrument cluster 290
Leather upholstery 291
Light alloy wheels 290
MB Tex upholstery 292
Plastic and rubber parts 292
Rear window 53
Seat belts 291
Steering wheel 291
Upholstery 291
Windows 290
Windshield 52
Wiper blades 290
Wood trims 292
Climate control 166
Clock 25, 119, 135, 136
Closing
Cup holder, in rear seat armrest 238
Glove box 234
Hood 271
Tailgate 94Tilt/sliding sunroof* 219
Tilt/sliding sunroof*
in an emergency 329
Tilt/sliding sunroof*
with SmartKey 221
Windows 215, 216
Windows with SmartKey 217
Cloth upholstery
Cleaning 292
Cockpit 22, 385
Cockpit Management and
Data System see COMAND*
Collapsible wheel chock 323
COMAND* 386
COMAND* see
separate operating instructions
Combination switch 112
High beam flasher 49
Rear window wiper 53
Turn signals 50
Windshield wipers 50
Consumer information 382
Control and operation of
radio transmitter 264
Page 401 of 426

399 Index
Doors
Message in display 311
Opening from inside vehicle 93
Opening from the outside 91
Downhill driving
Cruise control 224
Downshifting 154
Drink holder see Cup holders
Drinking and driving 257
Driving
Driving abroad 263
General instructions 43, 257
Hydroplaning 260
In winter 262
Problems 54
Safety systems 79
Through standing water 263
Driving abroad 263
Driving instructions 257
Driving off 259Driving safety systems
4MATIC 84
ABS 79
BAS 80
ESP 81
Driving systems 223
Cruise control 223
Driving safety systems 79
E
Easy-entry/exit feature* 97
Activating 144
Electrical fuses 356
Electrical outlet 240
Electrical outlet in cargo
compartment 240
Electrical outlet in rear
passenger compartment 240
Electrical system
Technical data 370
Electronic Stability Program see ESPEmergency call
911 213
Emergency call system* 242
Emergency calls
Initiating an emergency call 244
With Tele Aid* 243
Emergency operation
(Limp Home Mode) 160
Emergency operations
Closing power
tilt/sliding sunroof* 329
Locking the vehicle 327
Opening power
tilt/sliding sunroof* 329
Remote door unlock 248
Unlocking the vehicle 326
Emergency Tensioning Device see ETD
Emission control 265
Emission control information label 364
Ending
A call (telephone*) 150
Page 408 of 426

406 IndexLoading 226
Cargo tie-down rings 233
Instructions 232
Roof rack* 226
Split rear bench seat 230
Locator lighting 111
Setting 141
Lock button 387
Locking 55, 90
Automatic while driving 95
Centrally from inside 96
Fuel filler flap 267
Global, SmartKey 91
Glove box 234
Vehicle in an emergency 327
Loss of keys 93
Loss of Service and Warranty
Information Booklet 363
Low beam headlamps
Indicator lamp 25
Messages in display 316–317
Replacing bulbs 333, 335
Switching on 49Lowering
Vehicle 346
Lubricants
Technical data 373
Luggage cover 229
Retractable 229
M
Main dimensions 371
Main fuse box
In passenger compartment 357
Mainodometer 119
Maintenance 12, 284
Vehicles with E85 fuel 378
Maintenance service
Calling up the maintenance
service indicator 285
Major service (Service B) 284
Minor service (Service A) 284
Overdue 285
Types 285
When due 284Maintenance service indicator 284
Calling up 285, 286
Clearing 285, 286
Maintenance System
(U.S. vehicles) 284, 387
Manual headlamp mode 109
Manual operations
Fuel filler flap 328
Interior lighting control 114
Locking the vehicle 327
Tilt/sliding sunroof* 329
Unlocking the driver’s door 326
Unlocking the tailgate 326
Unlocking transmission
gear selector lever 328
Manual seat
Adjusting 36
Adjusting backrest tilt 36
Adjusting head restraint height 37
Adjusting head restraint tilt 37
Adjusting seat cushion tilt 36
Adjusting seat height 36
Front seat head restraints 99
Seat fore and aft adjustment 36
Page 410 of 426

408 Index
ESP 304–305
Fuel cap 297, 314
Hood 314
Key, SmartKey 314
Lamps, exterior 315–318
Oil 312–313
Parking brake 307
Restraint system 305
Seat belt system 319
SRS 305
Steering gear oil level 319
Tailgate 320
Tele Aid* 320
Telephone* 320
Tilt/sliding sunroof* 320
Windshield washer fluid 320
Multifunction steering
wheel 26, 120, 387
Buttons 120N
Navigation system*
Operating 128
See separate COMAND*
operating instructions
Night security illumination 111
Setting 141
O
Occupant safety 60
Air bags 61
Children and air bags 62
Children in the vehicle 69
Fastening the seat belt 43
Infant and child restraint systems 69
LATCH-type child seat anchors 75
Seat belts 43, 64
Odometer, main 119
Oil
Adding 274
Filler neck 274Oil level see Engine oil level
Oil see Engine oil
One-touch gearshifting 154
Canceling gear range limit 154
Downshifting 154
Upshifting 154
Opening
Cup holder, in rear seat armrest 238
Doors from the inside 93
Fuel filler flap 268
Fuel filler flap manually 328
Glove box 234
Hood 270
Power tilt/sliding sunroof*
in an emergency 329
Side windows 215
Tailgate 94
Tilt/sliding sunroof* 219, 329
Tilt/sliding sunroof*
with SmartKey 221
Windows 215
Windows with SmartKey 217
Page 412 of 426

410 IndexPlaying
CDs 196
Poly-V-belt drive 387
Layout 365
Positions (Memory function*)
Recalling from memory 106
Storing into memory 106
Power assistance 257
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* 105
Removing/installing front
head restraints 100
Seat fore and aft adjustment 38
Power tilt/sliding sunroof* 219
Power train 388
Power washer 288Power windows 215
Blocking of rear door
window operation 77
Side windows 215
Synchronizing 218
Practical hints
Collapsible wheel chock 323
First aid kit 321
Fuses 356
Lamp in center console 300
Lamps in instrument cluster 294
Minispare wheel 324
Symbol messages 306
Text messages 302
Towing the vehicle 352
Vehicle jack 321, 322
Vehicle status messages
in the display 301
Vehicle tool kit 321
Premium unleaded gasoline 376
Problems
While driving 54
With vehicle 17Product information 9
Program mode 119
Program mode selector switch 388
Automatic shift program,
automatic transmission 158
Q
Quick search
Phone book* 151
R
Radio
Selecting stations 126
Radio operation 183
Radio see Radio operation
Radio transmitter,
control and operation 264
Range (distance to empty)
Calling up 148
Reading lamp 114
Rear bench seat
Foldable 230
Rear door window
Blocking operation 77
Page 416 of 426

414 IndexSetting current speed 224
Setting the temperature 169
Settings
Convenience functions 144
Factory, SmartKey 91
Individual, SmartKey 145
Lighting (control system) 139
Menus and submenus 121
Resetting all (control system) 130
Resetting in the submenu 131
Selective, SmartKey 91
Settings menu
Functions in 130
Individual vehicle settings 130
Submenus 131
Shift lock 388
Shift program mode 119
Shifting
Gear selector lever 46, 152
Gear selector lever positions 156
Into optimal gear range
(automatic transmission) 154Side impact air bags 66
Side marker lamps, front
Messages in display 315
Replacing bulbs 333
Side marker lamps, rear
Replacing bulbs 333
Side markers
Cleaning 289
Side windows
Automatic opening 216
Cleaning 290
Closing 215, 216, 217
Closing fully 216
Closing with SmartKey 217
Opening 215, 216, 217
Opening fully 216
Opening with SmartKey 217
Stopping 217
Synchronizing power windows 218
Simultaneous wiping and washing
Rear window wiper 53
Windshield wipers 52Single CD mode selector 177
Single wipe 52
Sliding in
Swiveling cup holder,
in front of seat armrest 237
Sliding out
Swiveling cup holder,
in front of seat armrest 236
SmartKey 90
Changing batteries 331
Locking and unlocking 90
Opening and closing the
tilt/sliding sunroof* with 221
Opening and closing
windows with 217
Unlocking with 32
Snow chains 283
Soft keys
Audio system 178
Sound system* 180
Spare fuses 357
Spare wheel 369
Page 417 of 426

415 Index
Spare wheel bolts
For Minispare wheel 325
Speed
Setting current 224
Speed settings
Cruise control 225
Speedometer 25
Settings units 133
Speedometer display mode
Selecting 133
Split rear bench seat 230
SRS 68, 388
Indicator lamp 25, 299
Message in display 305
Standing lamps, front
Replacing bulbs 333
Standing lamps, rear
Replacing bulbs 333
Standing water
Driving instructions 263Starter switch 23, 33
Positions 33
Starting difficulties 47
Starting position 33
Starting the engine 46
Station (satellite radio)
selecting 190
Steering column
Height adjustment, electrical* 41
Height adjustment, manual 40
Length adjustment, electrical* 41
Length adjustment, manual 40
Steering gear oil
Message in display 319
Steering wheel
Adjusting 39
Buttons 26
Cleaning 291
Electrical adjustment* 40
Manual adjustment 40Stolen vehicle
Recovery services 249
Stopping
Tilt/sliding sunroof* 221
Windows 217
Storage compartments
Cargo compartment 227
Glove box 234
Storage spaces
Cup holder in rear seat armrest 237
Cup holders in front of
seat armrest 236
Storing
station (satellite radio) 192
Storing (Memory function*)
Positions into memory 106
Submenus
Convenience 144
For settings 121
In control system 123
Instrument cluster 133, 135