
1, 2, 3 ...
115V AC Socket  ................................. 213
3-zone automatic climate control see Climate control system                      
4-ETS (Electronic Traction System)  ... 64
4MATIC see All-wheel drive (4MATIC)                    
A
ABS (Antilock Brake System)  ............. 62
Indicator lamp ................................ 315
Messages in the multifunction
display  ................................... 288, 300
Accessory weight  .............................. 254
Accidents  ........................................... 112
Air bags  ........................................... 37
Distance warning function  .............155
Emergency calls (Tele Aid)  .............215
NECK-PRO active front head
restraints   ........................................ 53
Active Bi-Xenon headlamps
Messages in the multifunction
display  ........................................... 310
see Headlamps                                         
Adaptive Damping System
see ADS                                                    
AdBlue ®
 ...................................... 346, 373
Capacity, AdBlue ®
 tank  ................. 369
Refilling   ......................................... 347
Additives  
Engine oil  ....................................... 371
Gasoline ......................................... 372
Address change  ................................... 22
ADS (Adaptive Damping System)  ..... 159
Advanced Tire Pressure
Monitoring System (Advanced
TPMS)  ................................................. 239
Messages in the multifunction
display  ................................... 297, 313
Air bags  ................................................ 37
Emergency call upon deployment  ..215
Front, driver and passenger  .............40
Front passenger front air bag off
indicator lamp (Canada
only)  ........................................ 46, 322
Front passenger front air bag off
indicator lamp (USA only)  ........42, 322
Knee bag .......................................... 40
Messages in the multifunction
display  ........................................... 291
OCS (Occupant Classification
System)  ........................................... 42
Safety guidelines  ............................. 39
Side impact  ...................................... 41
Window curtain  ................................ 42
Air conditioning refrigerant and
lubricant  ............................................. 371
Air distribution  .......................... 178, 188
Air filter  .............................................. 309
Air pressure see Tire inflation pressure                        
Air pressure (tires)  ............................ 255
Air recirculation mode  .............. 180, 190
Air suspension program  
Comfortable driving style  ...............159
Introduction  ................................... 159
Messages in the multifunction
display  ........................................... 301
Sporty driving style  ........................159
Suspension tuning  .........................159
Vehicle level control  ......................159
Air volume  ................................. 179, 189
Alarm system see Anti-theft systems                              
Alignment bolt (vehicle tool
kit)  .............................................. 284, 343
All-wheel drive (4MATIC)  .................. 166
Alternator  
Messages in the multifunction
display  ................................... 296, 308
Alternator (Technical data)
see Vehicle specification                          
Anticorrosion/antifreeze  .................. 374
Antilock Brake System see ABS                                                     
Anti-theft systems  ............................... 66
Anti-theft alarm system  ...................66
Immobilizer  ...................................... 66
Aquaplaning
see Hydroplaning                                      
Armrest, front  
Storage compartment  ....................2084IndexX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 4 

Resume function ............................ 147
Setting current speed  ....................145
Cup holders  ........................................ 209
Curb weight  ....................................... 255
Customer Assistance Center (CAC)  ... 23
Customer Relations Department  ....... 23
D
Dashboard see Instrument cluster                              
Data recording  ..................................... 24
Date, Setting  ...................................... 135
Daytime running lamp mode  .............. 99
Switching on or off ......................... 136
Deep water
see Standing water                                   
Defroster  
Rear window  .................................. 191
Windshield  ............................. 179, 189
Delayed shut-off  
Exterior lamps ................................ 137
Interior lighting  .............................. 138
Department of Transportation
see DOT                                                    
Diesel engine  
Preglow indicator lamp  ....................29
Diesel fuel
see Fuel                                                     
Differential locks  ............................... 121
A few words about  .........................122
Messages in the multifunction
display  ................................... 123, 302
Switching  ....................................... 122
Difficulties  
While driving  .................................. 111
With starting  .................................. 110
Digital clock
see Clock                                                  
Digital speedometer  ......................... 129
Dimensions (vehicle) see Vehicle specification                          
Direction of rotation (tires)  .............. 246
Displays  
Digital speedometer  ......................129
Distronic  ........................................ 149
Maintenance service indicator  .......273
Messages in the multifunction
display  ........................................... 287
Multifunction display  .....................127
Outside temperature  .............129, 135
Symbol messages  ..........................299
Text messages  ............................... 288
Trip computer  ................................ 141
Vehicle status message memory  ...131
Vehicle system settings  .................132
Distronic  ............................................ 147
Cleaning system sensor cover  .......278
Control system  .............................. 131
Distance warning function  .............155
Distance warning
lamp  ...................................... 149, 319
Driving with .................................... 153
Menu  ............................................. 150
Messages in the multifunction
display  ........................................... 294
Resume function  ............................ 152
Sensor cover .................................. 278
Speed settings  ............................... 151
Door control panel  .............................. 34
Door handles  ........................................ 34
Doors  
Child safety locks  ............................ 60
Locking/unlocking (KEYLESS-GO)  ...71
Locking/unlocking (SmartKey)  ........70
Messages in the multifunction
display  ........................................... 304
Opening from inside ......................... 74
Remote door unlock (Tele Aid)  .......219
Unlocking (Mechanical key)  ...........323
DOT (Department of
Transportation)  .................................. 255
Downhill Speed Regulation see DSR                                                    
Drinking and driving  ......................... 259
Driving  
Abroad  ........................................... 272
Hydroplaning  ................................. 262
Instructions  ........................... 108, 259
In winter  ........................................ 258
Off-road  ......................................... 262
Problems  ....................................... 111
Safety systems  ................................ 61
Systems  ......................................... 144Index7X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 7 

ETD (Emergency Tensioning
Device)  ................................................. 52
Safety guidelines  ............................. 39
Express operation  
Power windows  .............................. 105
Tilt/sliding sunroof  ........................192
Exterior lamp switch  ........................... 97
Exterior rear view mirrors  .................. 94
Fold-in function ........................ 95, 140
Parking position  ............................... 95
Power-folding  ................................... 95
Exterior view of vehicle  ...................... 26
F
Fastening the seat belts  ..................... 50
First aid kit  ......................................... 284
Flat tire  ............................................... 336
Lowering the vehicle  ......................344
Mounting the spare wheel  .............340
Preparing the vehicle  .....................336
Spare wheel ........................... 336, 368
TIREFIT (tire repair kit)  ...................337
Floormats  ........................................... 223
Fluids  
AdBlue ®
 ......................................... 369
Automatic transmission fluid  .........369
Brake fluid  ..................................... 369
Capacities  ...................................... 368
Engine coolant  ............................... 369
Engine oil  ....................................... 369
Power steering fluid  .......................369
Washer and headlamp cleaning
system  ........................................... 370
Fog lamps  ............................................. 99
Messages in the multifunction
display  ................................... 310, 312
Fold-in function for exterior rear
view mirrors  ................................ 95, 140
Four-wheel drive see All-wheel drive (4MATIC)                    
Front air bags
see Air bags                                              
Front axle oil  ...................................... 369
Front lamps see Headlamps                                         
Front passenger front air bag  ............ 40
Messages in the multifunction
display  ........................................... 291
Front passenger front air bag off
indicator lamp (Canada only)  ..... 46, 322
Front passenger front air bag off
indicator lamp (USA only)  .......... 42, 322
Front seat head restraints see Head restraints                                   
Fuel  ..................................................... 226
Additives  ........................................ 372
Capacity, fuel tank  .........................369
Diesel fuel  ............................. 369, 372
Drive sensibly–safe fuel  .................259
Fuel consumption statistics  ...........141
Fuel filler flap and cap  ...................227
Fuel tank reserve warning
lamp  ........................................ 29, 320
Premium unleaded gasoline ... 369, 371
Refueling ........................................ 226
Requirements  ................................ 371
Fuel filler flap  ..................................... 227
Opening manually  ..........................324
Fuels, coolants, lubricants etc.  
Capacities  ...................................... 368
Fuel system, bleeding (diesel
engine)  ............................................... 345
Fuel tank  
Capacity  ........................................ 369
Fuel filler flap and cap  ...................227
Refueling ........................................ 226
Fuses  .................................................. 355
G
Garage door opener  .................... 33, 219
Gasoline see Fuel                                                     
GAWR (Gross Axle Weight Rating)  ... 255
Gear range  ......................................... 118
Indicator  ........................................ 118
Limiting  .......................................... 119
Shifting into optimal  ......................119
Transfer case  ................................. 120
Gear selector lever  ............................ 114
Cleaning ......................................... 280
Gearshift pattern  ........................... 114
Shifting procedure  .........................116
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Transmission position indicator .....116
Transmission positions  ..................116
Generator
see Alternator                                           
Global locking/unlocking
see Key, SmartKey                                    
Glove box  ........................................... 207
Gross Axle Weight Rating see GAWR                                                 
Gross Trailer Weight
see GTW                                                    
Gross Vehicle Weight
see GVW                                                    
Gross Vehicle Weight Rating
see GVWR                                                 
GTW (Gross Trailer Weight)  .............. 255
GVW (Gross Vehicle Weight)  ............ 255
GVWR (Gross Vehicle Weight
Rating)  ................................................ 255
H
Halogen headlamps see Headlamps                                         
Hard plastic trim items, cleaning  .... 279
Hazard warning flasher  .................... 101
Headlamp cleaning system  .............. 101
Headlamps  
Active Bi-Xenon headlamps  .............97
Adjusting aim  ................................. 333
Automatic headlamp mode  ..............98
Bi-Xenon  .................................. 97, 329
Cleaning lenses  ............................. 277
Cleaning system  ............................ 101
Daytime running lamp mode  ............99
Delayed shut-off  ............................ 137
Halogen  ......................................... 329
High-beam flasher  .........................101
High-beam headlamps  ...................100
Low-beam headlamps  ......................98
Replacing bulbs  ............................. 328
Switch  .............................................. 97
Headliner, cleaning and care of  ....... 280
Head restraints  .................................... 82
Adjustment  ................................ 82, 84
Comfort head restraint  ....................84
NECK-PRO active front head
restraints  ......................................... 53
NECK-PRO active front head
restraints, resetting  .......................325
Heated steering wheel  ........................ 93
Height adjustment  
Seat belt outlet  ................................ 51
Seats  ............................................... 82
Vehicle level control  ......................159
High-beam flasher  ............................. 101
High-beam headlamps  .............. 100, 329
Indicator lamp .................................. 29
Hill-start assist system  ..................... 155
Hinged quarter windows  .................. 106
Hood  ................................................... 228
Messages in the multifunction
display  ........................................... 304
Hooks  ................................................. 201
Horn  ...................................................... 27
HVAC see Climate control system                      
Hydroplaning  ..................................... 262
I
Identification labels  .......................... 360
Identification number, vehicle
(VIN)  ................................................... 361
Ignition  ......................................... 80, 109
Immobilizer  .......................................... 66
Indicator lamps see Lamps, indicator and warning            
Infant and child restraint systems
see Children in the vehicle                        
Inflation pressure
see Tires, Inflation pressure                      
Infrared reflecting windshield  ......... 223
Inside door handle  .............................. 74
Instrument cluster  ............................ 124
Illumination  .................................... 124
Lamps  ............................................ 314
Multifunction display  .....................127
Instrument lighting
see Instrument cluster, Illumination         
Instrument panel
see Instrument cluster                              
Instruments and controls
see Cockpit                                               
10IndexX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 10 

LATCH-type child seat anchorssee Children in the vehicle                        
License plate lamps  
Messages in the multifunction
display  ........................................... 311
Replacing bulbs  ............................. 330
Light alloy wheels, cleaning  ............. 279
Lighter see Cigarette lighter                                 
Lighting  ................................................ 97
Daytime running lamp mode  ............99
Exterior  ............................................ 97
Interior  ........................................... 101
Limp-home mode  .............................. 119
Load index (tires)  ...................... 251, 255
Loading see Vehicle loading                                   
Locator lighting  ................................. 136
Lock button  
Outside door handle (KEYLESS-
GO)  .................................................. 73
Locking the vehicle  
KEYLESS-GO  .................................... 71
Manually  ........................................ 324
SmartKey  ......................................... 70
Loss of  
Key  .................................................. 73
Service and Warranty Information
booklet  .......................................... 360
Low-beam headlamps  ......................... 98
Exterior lamp switch  ........................97
Indicator lamp .................................. 29
Switching on  .................................... 98
LOW RANGE mode  ............................. 120
Messages in the multifunction
display  ........................................... 303
Switching  ....................................... 121
Lubricants  .......................................... 368
Lumbar support  ................................... 87
M
Maintenance  ........................................ 21
Maintenance System  
Service indicator display  ................274
Service indicator message  .............273
Service term exceeded  ..................274
Manual headlamp mode (Low-
beam headlamps)  ................................ 98
Maximum engine speed see Vehicle specification                          
Maximum loaded vehicle weight  ..... 256
Maximum load rating (tires)  ............. 255
Maximum permissible tire
inflation pressure  .............................. 256
Mechanical key  .................................. 323
Media interface  ................................. 207
Memory function  ................................. 96
Menus see Control system menus                       
Minispare wheel
see Spare wheel                                        
Mirrors  .................................................. 93
Auto-dimming rear view mirrors ....... 94
Exterior rear view mirror parking
position  ............................................ 95
Exterior rear view mirrors  ................94
Interior rear view mirror  ...................93
Memory function .............................. 96
Power-folding exterior rear view
mirrors  ............................................. 95
Vanity mirror  .................................. 210
MOExtended system  ......................... 345
MOExtended tires  ..................... 345, 365
MON (Motor Octane Number)  .......... 371
Motor Octane Number see MON                                                   
Multicontour seat  ................................ 90
Multifunction display  ........................ 127
Symbol messages  ..........................299
Text messages  ............................... 288
Vehicle status messages  ...............287
Multifunction display messages  
ABS  ....................................... 288, 300
Active headlamps  .......................... 310
Advanced TPMS ..................... 297, 313
Air bags  ......................................... 291
Air filter .......................................... 309
Air suspension program  .................301
Alternator  .............................. 296, 308
Automatic
transmission  .................................. 296
Battery  ................................... 296, 308
Brake fluid  ..................................... 30012IndexX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 12 

Brake pads ..................................... 299
Coolant  .......................................... 306
Cruise control  ................................ 294
Differential locks  ...................123, 302
Distronic  ........................................ 294
Doors  ............................................. 304
Downhill Speed Regulation (DSR)  ..303
EBP  ................................................ 300
Engine oil  ....................................... 308
ESP ®
 ...................................... 289, 300
Fog lamps  .............................. 310, 312
Front passenger front air bag  ........291
Gas cap .......................................... 309
High-beam lamps  ........................... 311
Hood  .............................................. 304
License plate lamps  .......................311
Light sensor  ................................... 311
Low-beam lamps ............................ 312
LOW RANGE mode ......................... 303
Parking brake  ................................ 300
Parking lamps  ................................ 311
PRE-SAFE ®
 .................................... 290
Reserve fuel  ................................... 309
Reverse lamp  ................................. 310
Side marker lamps  .........................311
SmartKey  ....................................... 304
SmartKey with KEYLESS-GO  ..........304
SRS  ................................................ 301
Tailgate  .......................................... 304
Tail lamps  ...................................... 312
Tele Aid  .......................................... 301
Tire inflation pressure  ............297, 313
Tire pressure monitor  ....................297
Tires  ...................................... 297, 313
Trailer brake lamps  ........................312
Trailer tail lamps  ............................ 312
Trailer turn signal lamps  ................312
Turn signals  ................................... 313
Washer fluid  ................................... 305
Multifunction steering wheel  
Adjustment  ...................................... 91
Buttons  .......................................... 125
Cleaning ......................................... 280
Easy-entry/exit feature  ...........92, 139
Gearshift control  ............................ 118
Heating  ............................................ 93
Memory function .............................. 96
Overview  .......................................... 30N
Navigation menu  ............................... 130
Navigation system see Separate operating instructions         
NECK-PRO active front head
restraints  ............................................. 53
Resetting  ....................................... 325
Nets, parcel  ....................................... 200
Night security illumination  .............. 137
Normal occupant weight  .................. 256
Number, vehicle identification
(VIN)  ................................................... 361
O
Occupant Classification System see OCS (Occupant Classification
System)                                                     
Occupant distribution  ....................... 256
Occupant safety  
Air bags  ........................................... 37
BabySmart™  .................................... 46
Children and air bags  .......................37
Children in the vehicle  .....................55
Child seat anchors – LATCH-type  ....59
Fastening the seat belts ................... 50
Front passenger front air bag off
indicator lamp (Canada
only)  ........................................ 46, 322
Front passenger front air bag off
indicator lamp (USA only)  ........42, 322
Infant and child restraint systems .... 56
Introduction  ..................................... 36
OCS (Occupant Classification
System)  ........................................... 42
PRE-SAFE ®
 ....................................... 52
Seat belts  .................................. 39, 48
OCS (Occupant Classification
System)  ................................................ 42
Self-test  ........................................... 45
Odometer  ........................................... 127
Off-road driving  ................................. 262
Checklist  ............................... 264, 268
Crossing obstacles  ........................267
Driving instructions ........................ 262
Driving on sand  .............................. 267
Driving through water  ....................266
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Returning ....................................... 268
Ruts  ............................................... 267
Steep terrain  .................................. 264
Off-road driving program  .................. 158
Off-road menu  ................................... 131
Oil, oil level see Engine oil                                            
On-board computer
see Control system                                   
One-touch gearshifting  ..................... 118
Operating safety  .................................. 23
Ornamental moldings, cleaning  ....... 277
Outside temperature see Displays                                              
Overhead control panel  ...................... 33
P
Paintwork, cleaning  .......................... 276
Paintwork code  ................................. 361
Panic alarm  .......................................... 61
Panorama roof  
Sunshade  ....................................... 211
Parcel nets  ......................................... 200
Parking  ............................................... 112
Parktronic system  ..........................166
Parking brake  ............................ 112, 261
Messages in the multifunction
display  ........................................... 300
Parking position  
Exterior rear view mirrors  ................95
Transmission position  ....................116
Parktronic system  
Cleaning system sensors  ...............278
Malfunction .................................... 169
Minimum distance  .........................167
Sensor range  ................................. 167
Switching on/off  ........................... 168
System sensors  ............................. 167
Warning indicators  ...................27, 168
Parts service  ...................................... 360
PASS AIR BAG OFF indicator lamp
(Canada only) see Front passenger front air bag
off indicator lamp (Canada only)               
PASS AIR BAG OFF indicator lamp
(USA only) see Front passenger front air bag
off indicator lamp (USA only)                    
Passenger safety
see Occupant safety                                 
Pedals  ................................................. 259
Phone see Telephone                                           
Plastic parts, cleaning  ...................... 279
Power assistance  .............................. 259
Power outlets  .................................... 212
Power seats see Seats                                                  
Power tailgate  
Closing  ............................................. 76
Messages in the multifunction
display  ........................................... 304
Opening  ........................................... 76
Power tilt/sliding sunroof  
Operation ....................................... 192
Synchronizing  ................................ 194
Power washer  .................................... 276
Power windows  ................................. 105
Cleaning ......................................... 278
Door windows  ................................ 106
Hinged quarter windows  ................106
Operation ....................................... 105
Rear door window, override
switch  .............................................. 60
Synchronizing  ................................ 107
Practical hints  ................................... 284
Preglow indicator lamp  .............. 29, 109
PRE-SAFE ®
 ............................................ 52
Messages in the multifunction
display  ........................................... 290
Problems  
While driving  .................................. 111
With vehicle  ..................................... 23
With wipers  .................................... 105
Product information  ............................ 20
Production options weight  ............... 256
Proximity key see Key, SmartKey                                    
PSI (air pressure unit)  ....................... 25614IndexX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 14 

Capacities fuels, coolants,
lubricants etc.  ................................ 368
Coolant  .......................................... 373
Engine oil additives  ........................371
Engine oils  ..................................... 370
Fuel requirements .......................... 371
Gasoline additives .......................... 372
Identification labels  .......................360
Premium unleaded gasoline  ...........371
Rims and tires  ................................ 365
Spare wheel  ................................... 368
Vehicle specification
GL 350 BlueTEC  ............................. 362
Vehicle specification GL 450  .........362
Vehicle specification GL 550  .........363
Washer and headlamp cleaning
system  ................................... 370, 375
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  ............................................... 214
Emergency calls  ............................. 215
Information button  .........................217
Initiating an emergency call
manually  ........................................ 216
Messages in the multifunction
display  ........................................... 301
Remote door unlock  ......................219
Roadside Assistance button  ..........216
Search & Send  ............................... 218
SOS button  .................................... 216
Stolen Vehicle Recovery Services  ..219
System self-test  ............................. 215
Telephone  ............................................. 30
Answering/ending a call  ................143
Hands-free microphone  ...................34
Menu  ............................................. 142
Operation ....................................... 142
Phone book .................................... 143
Redialing  ........................................ 144
Temperature  
Interior temperature  ..............178, 187
Outside  .................................. 129, 135Tether anchorage points
see Children in the vehicle                        
Tie-down rings  ................................... 200
Tightening torque  
Wheels  ........................................... 344
Time setting  ....................................... 135
TIN (Tire Identification Number)  ...... 256
Tire and Loading Information
placard  ............................................... 242
Tire and loading terminology  ........... 254
TIREFIT  ............................................... 337
Tire Identification Number see TIN                                                      
Tire inflation pressure  
Checking ........................................ 237
Important notes on  ........................235
Label on the inside of fuel filler
flap  ................................................ 236
Placard on driver’s door B-pillar  .....242
Tire labeling  ....................................... 250
Tire load rating  .................................. 255
Tire ply composition and material
used  .................................................... 256
Tire pressure loss warning system  . 237
Tire repair kit see TIREFIT                                               
Tires  ........................................... 233, 365
Advanced Tire Pressure
Monitoring System (Advanced
TPMS)  ............................................ 239
Air pressure  ................................... 234
Care and maintenance  ...................247
Cleaning ......................................... 248
Direction of rotation, spinning  .......246
Important notes on tire inflation
pressure  ........................................ 235
Inflation pressure  ..................236, 237
Information placard  .......................242
Inspection  ...................................... 247
Labeling  ......................................... 250
Load index  ............................. 251, 255
Load rating  .................................... 255
Messages in the multifunction
display  ................................... 297, 313
MOExtended  .................................. 365
Ply composition and material
used ............................................... 256Index17X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 17