
Our company and staff congratulate you on
the purchase of your new Mercedes-Benz.
Your selection of our product is a
demonstration of your trust in our company
name. Furthermore, it exemplifies your desire
to own an automobile that will be as easy as
possible to operate and will provide years of
service.
Your Mercedes-Benz represents the efforts of
many skilled engineers and craftsmen. To
help assure your driving pleasure, and also
the safety of you and your passengers, we ask
you to make a small investment of time:
R Please read this manual carefully, then
return it to your vehicle where it will be
handy for your reference.
R Please follow the recommendations
contained in this manual. They are
designed to acquaint you with the
operation of your Mercedes-Benz.
R Please pay attention to the warnings and
cautions contained in this manual. They are
designed to help improve the safety of the
vehicle operator and occupants.
We extend our best wishes for many miles of
safe, pleasurable driving.
Mercedes-Benz USA, LLC
A Daimler Company2045841081  É2045841081FËÍ
 X204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 1 

1, 2, 3 ...
115V AC Socket  ................................. 198
4-ETS see ETS/4-ETS                                          
4MATIC
see All-wheel drive (4MATIC)                    
911 Emergency calls  ........................ 161
A
ABS (Antilock Brake System)  
Indicator lamp ................................ 289
Messages in the multifunction
display  ................................... 271, 272
Accessory weight  .............................. 239
Accidents  ........................................... 101
Air bags  ........................................... 37
Emergency calls (Tele Aid)  .............201
Emergency calls (Telephone)  .........161
NECK-PRO active front head
restraints   ........................................ 51
Active Bi-Xenon headlamps
see Headlamps                                         
Additives  
Engine oil  ....................................... 336
Gasoline ......................................... 337
Address change  ................................... 21
Advanced Tire Pressure
Monitoring System (Advanced
TPMS)  ................................................. 224
Messages in the multifunction
display  ........................................... 268
Air bags  ................................................ 37
Emergency call upon deployment  ..201
Front, driver and passenger  .............40
Front passenger front air bag off
indicator lamp (Canada
only)  ........................................ 45, 297
Front passenger front air bag off
indicator lamp (USA only)  ........42, 298
Messages in the multifunction
display  ........................................... 264
OCS (Occupant Classification
System)  ........................................... 42
Safety guidelines  ............................. 39
Side impact  ...................................... 40
Window curtain  ................................ 41
Air conditioning refrigerant and
lubricant  ............................................. 336
Air distribution  .................................. 181
Air pressure see Tire inflation pressure                        
Air pressure (tires)  ............................ 239
Air pump (electric)  ............................ 315
Air recirculation mode  ...................... 183
Air volume  .......................................... 182
Alarm system see Anti-theft systems                              
All-wheel drive (4MATIC)  .................. 171
Alternator  
Messages in the multifunction
display  ........................................... 281
Alternator (Technical data)
see Vehicle specification                          
Anticorrosion/antifreeze  .................. 338
Anti-theft systems  ............................... 63
Anti-theft alarm system  ...................63
Immobilizer  ...................................... 63
Aquaplaning
see Hydroplaning                                      
Armrest, front  
Storage compartments  ..................193
Armrest, rear  
Storage compartment  ....................193
Ashtrays  ............................................. 196
Aspect ratio (tires)  ............................ 239
Audio menu  ........................................ 115
Audio system  ..................................... 125
Adjusting volume  ........................... 133
Audio and telephone operation  ......125
Audio AUX mode ............................ 154
Bluetooth ®
 settings  ....................... 135
CD mode ........................................ 146
Components  .................................. 126
MP3 mode  ..................................... 146
Operating safety  ............................ 126
Radio operation  ............................. 136
Satellite radio  ................................ 140
Switching on and off  ......................132
System settings  ............................. 135
Telephone  ...................................... 155
Auto-dimming rear view mirrors  ........ 84
Automatic central locking  .......... 70, 124
Automatic headlamp mode  ................ 884IndexX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 4 

Electronic Traction Systemsee ETS/4-ETS                                          
Emergency, in case of  
First aid kit ..................................... 260
Flat tire  .......................................... 312
Hazard warning flasher  ....................90
Roadside Assistance ................ 20, 203
Towing the vehicle  .........................321
Emergency calls  
Tele Aid  .......................................... 201
Telephone  ...................................... 161
Emergency operations  
Remote door lock (Tele Aid) ........... 205
Remote door unlock (Tele Aid)  .......204
Emergency Tensioning Device
see ETD                                                     
Emission control  ............................... 249
Information label ............................ 329
System warranties  ...........................19
Engine  
Break-in recommendations  ............212
Cleaning ......................................... 253
Compartment  ................................ 214
Malfunction indicator lamp  ............295
Messages in the multifunction
display  ........................................... 279
Number .......................................... 329
Starting  ............................................ 98
Turning off  ..................................... 102
Engine (Technical data)
see Vehicle specification                          
Engine coolant
see Coolant                                               
Engine oil  
Adding  ........................................... 216
Additives  ........................................ 336
Checking level  ............................... 215
Consumption  ................................. 215
Messages in the multifunction
display  ........................................... 282
Oil dipstick ..................................... 215
Recommended engine oils and oil
filter  ............................................... 335
ESP ®
 (Electronic Stability
Program)  .............................................. 61
ETS/4-ETS  ....................................... 62Messages in the multifunction
display  ........................... 271, 272, 274
Trailer stabilization ........................... 63
Warning lamp ................................. 293
ETD (Emergency Tensioning
Device)  ................................................. 51
Safety guidelines  ............................. 39
ETS/4-ETS (Electronic Traction
System)  ................................................ 62
Express operation  
Panorama roof  ............................... 185
Power windows  ................................ 95
Exterior lamp switch  ........................... 87
Exterior rear view mirrors  .................. 84
Fold-in function  ................................ 86
Parking position  ............................... 85
Power-folding  ................................... 85
Switching fold-in function on or
off  .................................................. 124
Exterior view of vehicle  ...................... 26
F
Fastening the seat belts  ..................... 49
First aid kit  ......................................... 260
Flat tire  ............................................... 312
Lowering the vehicle  ......................317
Mounting the spare wheel  .............312
Preparing the vehicle  .....................312
Spare wheel ........................... 312, 333
Floormats  ........................................... 209
Fluids  
Automatic transmission fluid  .........334
Brake fluid  ..................................... 334
Capacities  ...................................... 334
Engine coolant  ............................... 334
Engine oil  ....................................... 334
Power steering fluid  .......................334
Washer and headlamp cleaning
system  ........................................... 335
Fog lamps  ............................................. 89
Messages in the multifunction
display  ................................... 283, 285
Fold-in function for exterior rear
view mirrors  ........................................ 86
Four-wheel drive see All-wheel drive (4MATIC)                    
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L
Labels  
Certification  ................................... 328
Emission control information  .........329
Tire and Loading Information
placard ........................................... 227
Tire inflation pressure  ....................220
Lamps, exterior  
Exterior lamp switch  ........................87
Front  .............................................. 304
Messages in the multifunction
display  ........................................... 283
Rear  ............................................... 305
Switching on/off .............................. 87
Lamps, indicator and warning  
ABS .......................................... 28, 289
Brakes  ..................................... 28, 289
Center console  ................................ 31
Coolant  .................................... 28, 295
Engine malfunction  ..................28, 295
ESP ®
 ........................................ 28, 293
Fog lamps  ........................................ 89
Front fog lamps ................................ 28
Front passenger front air bag off
(Canada only)  .......................... 45, 297
Front passenger front air bag off
(USA only) ................................ 42, 298
Fuel tank reserve  .....................28, 294
High-beam headlamps  ...............28, 90
Instrument cluster  ...................28, 288
Low-beam headlamps  ................28, 88
Low tire pressure/TPMS
malfunction telltale  ..................28, 296
Rear fog lamp  .................................. 28
Seat belt telltale  ................28, 50, 292
SRS .................................... 28, 36, 293
Turn signals  ..................................... 28
LATCH-type child seat anchors (ISOFIX)
see Children in the vehicle                        
License plate lamps  
Messages in the multifunction
display  ........................................... 285
Replacing bulbs  ............................. 305
Light alloy wheels, cleaning  ............. 256
Lighter see Cigarette lighter                                 Lighting ................................................ 87
Daytime running lamp mode  ............88
Exterior  ............................................ 87
Interior  ............................................. 92
Limp-home mode  .............................. 108
Load index (tires)  ...................... 235, 240
Loading see Vehicle loading                                   
Locator lighting  ................................. 122
Locking the vehicle  
KEYLESS-GO  .................................... 67
Manually  ........................................ 299
SmartKey  ......................................... 66
Loss of  
Key  .................................................. 69
Service and Warranty Information
booklet  .......................................... 328
Low-beam headlamps  ......................... 88
Exterior lamp switch  ........................87
Replacing bulbs  ............................. 304
Switching on  .................................... 88
Lubricants  .......................................... 334
Lumbar support  ................................... 80
M
Maintenance  ........................................ 20
Maintenance System  
Service indicator display  ................251
Service indicator message  .............250
Service term exceeded  ..................250
Manual headlamp mode (Low-
beam headlamps)  ................................ 88
Maximum engine speed see Vehicle specification                          
Maximum loaded vehicle weight  ..... 240
Maximum load rating (tires)  ............. 240
Maximum permissible tire
inflation pressure  .............................. 240
Mechanical key see Key, Mechanical                                 
Media interface  ................................. 192
Memory function  ........................... 33, 86
Menus see Control system menus                       
Mirrors  .................................................. 83
Auto-dimming rear view mirrors ....... 84
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Exterior rear view mirror parking
position  ............................................ 85
Exterior rear view mirrors  ................84
Interior rear view mirror  ...................84
Memory function .............................. 86
Power-folding exterior rear view
mirrors  ............................................. 85
Vanity mirror  .................................. 196
MON (Motor Octane Number)  .......... 337
Motor Octane Number see MON                                                   
MP3 mode  .......................................... 146
Multifunction display  ........................ 112
Symbol messages  ..........................270
Text messages  ............................... 264
Vehicle status messages  ...............262
Multifunction display messages  
ABS  ....................................... 271, 272
Active headlamps  .......................... 283
Advanced TPMS  ............................. 268
Air bags  ......................................... 264
Alternator  ...................................... 281
Battery  ........................................... 281
Brake fluid  ..................................... 273
Brake pads ..................................... 270
Cargo compartment ....................... 277
Child seat  ...................................... 267
Coolant  .......................................... 279
Corner-illuminating lamps  ..............286
Cruise control  ................................ 267
Doors  ............................................. 277
EBP  ................................................ 272
Engine oil  ....................................... 282
ESP ®
 ............................. 271, 272, 274
Fog lamps  .............................. 283, 285
Front passenger front air bag  ........264
Gas cap .......................................... 282
High-beam lamps  ........................... 284
Hood  .............................................. 277
License plate lamps  .......................285
Light sensor  ................................... 285
Low-beam lamps ............................ 285
Parking brake  ................................ 272
Parking lamps  ................................ 284
Power steering  ............................... 279
Reserve fuel  ................................... 282
Reverse lamp  ................................. 283
Side marker lamps  .........................284SmartKey ....................................... 277
SmartKey with KEYLESS-GO  ..........277
SRS  ................................................ 275
Tailgate  .......................................... 277
Tail lamps  ...................................... 286
Tele Aid  .......................................... 275
Tire inflation pressure  ............268, 288
Tire pressure monitor  ....................268
Tires  ...................................... 268, 288
Trailer brake lamps  ........................286
Trailer tail lamps  ............................ 286
Trailer turn signal lamps  ................287
Turn signals  ................................... 287
Multifunction steering wheel  
Adjustment  ...................................... 82
Buttons  .......................................... 110
Cleaning ......................................... 256
Easy-entry/exit feature  ...........83, 124
Memory function .............................. 86
Overview  .......................................... 29
N
Navigation system see Separate operating instructions         
Navi menu  .......................................... 115
NECK-PRO active front head
restraints  ............................................. 51
Resetting  ....................................... 301
Nets, parcel  ....................................... 188
Normal occupant weight  .................. 240
Number, vehicle identification
(VIN)  ................................................... 329
O
Occupant Classification System see OCS (Occupant Classification
System)                                                     
Occupant distribution  ....................... 240
Occupant safety  
Air bags  ........................................... 37
BabySmart™  .................................... 45
Children and air bags  .......................37
Children in the vehicle  .....................53
Child seat anchors – LATCH-type
(ISOFIX)  ........................................... 57
Fastening the seat belts ................... 49
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Front passenger front air bag off
indicator lamp (Canada
only)  ........................................ 45, 297
Front passenger front air bag off
indicator lamp (USA only)  ........42, 298
Infant and child restraint systems .... 54
Introduction  ..................................... 36
ISOFIX (Child seat anchors –
LATCH-type) ..................................... 57
OCS (Occupant Classification
System)  ........................................... 42
Seat belts  .................................. 39, 47
OCS (Occupant Classification
System)  ................................................ 42
Self-test  ........................................... 45
Odometer  ........................................... 113
Oil, oil level see Engine oil                                            
On-board computer
see Control system                                   
One-touch gearshifting  ..................... 107
Operating safety  .................................. 22
Ornamental moldings, cleaning  ....... 254
Overhead control panel  ...................... 32
P
Paintwork, cleaning  .......................... 252
Paintwork code  ................................. 329
Panic alarm  .......................................... 59
Panorama roof with power tilt/
sliding panel  ...................................... 185
Cleaning ......................................... 255
Operation ....................................... 185
Roller sunblinds  ............................. 184
Synchronizing  ................................ 186
Parcel nets  ......................................... 188
Parking  ............................................... 101
Parktronic system  ..........................172
Parking brake  .................................... 102
Messages in the multifunction
display  ........................................... 272
Parking position  
Exterior rear view mirrors  ................85
Transmission position  ....................104
Parktronic system  
Cleaning system sensors  ...............254
Malfunction .................................... 174
Minimum distance  .........................173
Sensor range  ................................. 172
Switching on/off  ........................... 174
System sensors  ............................. 172
Warning indicators  .........................173
Parts service  ...................................... 328
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  ................................................. 244
Phone see Telephone                                           
Plastic parts, cleaning  ...................... 256
Power assistance  .............................. 244
Power outlets  .................................... 197
Power seats see Seats                                                  
Power steering  
Messages in the multifunction
display  ........................................... 279
Power tailgate  
Closing  ............................................. 72
Opening  ........................................... 72
Power washer  .................................... 252
Power windows  ................................... 95
Cleaning ......................................... 255
Operation  ......................................... 95
Rear door window, override
switch  .............................................. 58
Synchronizing  .................................. 96
Practical hints  ................................... 260
Problems  
While driving  .................................. 101
With vehicle  ..................................... 22
With wipers  ...................................... 95
Product information  ............................ 19
Production options weight  ............... 240
Program mode selector switch  
Automatic shift program  ................106Index13X204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 13 

Self-test 
BabySmart™  .................................... 46
OCS (Occupant Classification
System)  ........................................... 45
Tele Aid  .......................................... 201
Service
see Maintenance                                       
Service, parts  .................................... 328
Service and warranty information  ..... 19
Service intervals see Maintenance System, Service
indicator message                                     
Service life (tires)  .............................. 232
Service menu  ..................................... 118
Settings  
Factory setting (KEYLESS-GO)  .........69
Factory setting (SmartKey)  ..............67
Memory function .............................. 86
Menu  ............................................. 119
Selective setting (KEYLESS-GO)  .......69
Selective setting (SmartKey)  ............67
Side impact air bags  ........................... 40
Side marker lamps  
Cleaning lenses  ............................. 254
Messages in the multifunction
display  ........................................... 284
Replacing bulbs  ............................. 304
Sidewall (tires)  .................................. 241
SmartKey see Key, SmartKey                                    
SmartKey with KEYLESS-GO
see Key, SmartKey                                    
Snow chains  ...................................... 242
Snow tires see Winter tires                                         
Spare wheel  ....................................... 331
Mounting  ....................................... 312
Storage location  ............................ 262
Speedometer  ....................................... 28
Speed settings  
Cruise control  ................................ 169
Resume function  ............................ 170
Sport Utility Vehicle
see SUV                                                    SRS (Supplemental Restraint System)  
Indicator lamp  ......................... 36, 293
Messages in the multifunction
display  ........................................... 275
Standing water, driving through  ...... 246
Starter switch positions  
KEYLESS-GO  .................................... 76
SmartKey  ......................................... 76
Starting difficulties (engine)  .............. 99
Starting the engine  ............................. 98
Steering column see Multifunction steering wheel,
Adjustment                                               
Steering wheel
see Multifunction steering wheel              
Stolen Vehicle Recovery Services  ... 205
Storage compartments  ..................... 192
Storing tires  ....................................... 233
Stranded vehicle  ............................... 324
Sun visors  .................................. 195, 196
SUV (Sport Utility Vehicle)  ................. 21
T
Tachometer  .................................. 28, 109
Overspeed range  ........................... 109
Tailgate  
Closing  ............................................. 71
Messages in the multifunction
display  ........................................... 277
Opening  ........................................... 71
Power tailgate  .................................. 72
Unlocking manually  .......................300
Tail lamps  ........................................... 305
Cleaning lenses  ............................. 254
Messages in the multifunction
display  ........................................... 286
Replacing bulbs  ............................. 305
Tar stains  ........................................... 252
Technical data  
Air conditioning refrigerant  ....335, 336
Brake fluid  ............................. 334, 336
Capacities fuels, coolants,
lubricants etc.  ................................ 334
Coolant  .................................. 334, 337
Engine oil additives  ........................336
Engine oils  ............................. 334, 335
Fuel requirements .......................... 337
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Gasoline additives .......................... 337
Identification labels  .......................328
Premium unleaded gasoline  ...........336
Rims and tires  ................................ 331
Spare wheel  ................................... 333
Vehicle specification GLK 350  .......330
Vehicle specification
GLK 350 4MATIC  ........................... 330
Washer and headlamp cleaning
system  ................................... 335, 339
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  ............................................... 200
Emergency calls  ............................. 201
Information button  .........................203
Initiating an emergency call
manually  ........................................ 202
Messages in the multifunction
display  ........................................... 275
Remote door lock  .......................... 205
Remote door unlock  ......................204
Roadside Assistance button  ..........203
Search & Send  ............................... 204
SOS button  .................................... 202
Stolen Vehicle Recovery Services  ..205
System self-test  ............................. 201
Telephone  .................................... 29, 155
Answering/ending a call  ................117
Call lists  ......................................... 164
Emergency calls “911”  ..................161
Hands-free microphone  ...................32
Making calls ................................... 165
Menu  ............................................. 117
Operation ....................................... 117
Phone book  ........................... 117, 162
Redialing  ........................................ 118
Temperature  
Coolant  .......................................... 109
Interior temperature  ......................180
Outside  .......................................... 110
Tether anchorage points
see Children in the vehicle                        Tie-down rings ................................... 188
Tightening torque  
Wheels  ........................................... 317
Time setting  ....................................... 121
TIN (Tire Identification Number)  ...... 241
Tire and Loading Information
placard  ............................................... 227
Tire and loading terminology  ........... 239
Tire Identification Number see TIN                                                      
Tire inflation pressure  
Checking ........................................ 221
Important notes on  ........................220
Label on the inside of fuel filler
flap  ................................................ 220
Placard on driver’s door B-pillar  .....227
Tire labeling  ....................................... 235
Tire load rating  .................................. 240
Tire ply composition and material
used  .................................................... 241
Tire pressure loss warning system  . 222
Tires  ........................................... 218, 331
Advanced Tire Pressure
Monitoring System (Advanced
TPMS)  ............................................ 224
Air pressure  ................................... 219
Care and maintenance  ...................232
Cleaning ......................................... 233
Direction of rotation, spinning  .......231
Important notes on tire inflation
pressure  ........................................ 220
Inflation pressure  ........................... 221
Information placard  .......................227
Inspection  ...................................... 232
Labeling  ......................................... 235
Load index  ............................. 235, 240
Load rating  .................................... 240
Messages in the multifunction
display  ................................... 268, 288
Ply composition and material
used ............................................... 241
Problems under-/overinflation  ......221
Retreads  ........................................ 218
Rims and tires (technical data)  ......331
Rotation  ......................................... 234
Service life  ..................................... 232
Sizes  .............................................. 331
Snow chains  .................................. 24216IndexX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 16