
Symbols
Trademarks ®
:
R AdBlue ®
 is a registered trademark of the
German Association of the Automotive
Industry (VDA).
R BabySmart TM
 is a trademark of Siemens
Automotive Corp.
R Bluetooth ®
 is a registered trademark of
Bluetooth SIG Inc.
R ESP ®
 and PRE-SAFE ®
 are registered
trademarks of Daimler.
R HomeLink ®
 is a registered trademark of
Prince, a Johnson Controls Company.
R SIRIUS and related marks are trademarks
of SIRIUS XM Radio Inc.
The following symbols are found in this
Operator’s Manual:GWarning!
Warning notices draw your attention to
hazards that may endanger your health or life,
or the health or life of others.
!  Highlights hazards that may result in
damage to your vehicle.
i Helpful hints or further information you
may find useful.
XThis symbol points to instructions
for you to follow.XA number of these symbols
appearing in succession indicates
a multiple-step procedure.Y  pageThis symbol tells you where to look
for further information on a topic.YYThis continuation symbol marks a
warning or procedure which is
continued on the next page.DisplayText in displays, such as the control
system, are printed in the type
shown here.X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 2 

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 

Ashtrays ............................................. 211
Aspect ratio (tires)  ............................ 255
Audio/DVD menu  .............................. 129
Auto-dimming rear view mirrors  ........ 94
Automatic central locking  .......... 74, 138
Automatic headlamp mode  ................ 98
Automatic interior lighting control  .. 101
Automatic locking when driving  ...... 138
Automatic transmission  ................... 114
Emergency operation (limp-home
mode)  ............................................ 119
Gear range indicator  ......................118
Gear ranges  ................................... 118
Gear selector lever  ........................114
Hill-start assist system  ..................155
Kickdown  ....................................... 117
One-touch gearshifting  ..................118
Shifting procedure  .........................116
Steering wheel gearshift control  ....118
Towing a trailer  .............................. 118
Transmission position indicator  .....116
Transmission positions  ..................116
AUX socket  ........................................ 207
Axle oils  .............................................. 369
B
BabySmart™  
Air bag deactivation system  .............46
Self-test  ........................................... 47
Backrest
see Seats                                                  
Backup lamps  
Messages in the multifunction
display  ........................................... 310
Bar (air pressure unit)  ....................... 255
BAS (Brake Assist System)  ................. 63
Batteries, SmartKey  
Checking condition  ..........................73
Replacing  ....................................... 326
Battery, Vehicle  ................................. 348
Charging  ........................................ 350
Jump starting  ................................. 350
Messages in the multifunction
display  ................................... 296, 308
Bead (tire)  .......................................... 255
Beverage holders see Cup holders                                        
Bleeding the fuel system (diesel
engine)  ............................................... 345
BlueTEC  
AdBlue ®
 tank  ................................. 346
AdBlue ®
 tank capacity  ...................369
Brake fluid  
Checking level  ............................... 233
Messages in the multifunction
display  ........................................... 300
Brake lamps  
Cleaning lenses  ............................. 277
Brake pads  
Messages in the multifunction
display  ........................................... 299
Brakes  ................................................ 260
Parking brake  ........................ 112, 261
Warning lamp ................................. 316
Break-in period  .................................. 226
Bug cover (Radiator)  ......................... 230
Bulbs see Replacing bulbs                                  
C
CAC (Customer Assistance Center)  ... 23
California retail buyers and
lessees, important notice for  ............. 21
Calls (phone)  ...................................... 142
Can holders see Cup holders                                        
Capacities and recommended
fuel/lubricants  .................................. 368
Cargo compartment  
Cargo net  ....................................... 206
Cargo volume, expanding  ..............201
Cover blind  .................................... 205
Fuse box  ........................................ 357
Hooks  ............................................ 201
Tie-down rings  ............................... 200
Cargo compartment cover blind  ...... 205
Cargo net  ........................................... 206
Cargo tie-down rings  ......................... 200
Carpets, cleaning  .............................. 280
Carriers  .............................................. 196
Center console  
Lower part  ....................................... 33
Upper part  ....................................... 31
Index5X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 5 

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
Index9X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 9 

R
Radiator  ..................................... 230, 257
Radio  
Selecting stations  ..........................129
Radio transmitters  ............................ 272
Rain sensor see Intermittent wiping                             
Rear axle oil  ....................................... 369
Rear center console ashtray see Ashtrays                                             
Rear doors  
Child safety locks  ............................ 60
Rear door window  
Override switch  ................................ 60
Rear fog lamp
see Fog lamps                                           
Rear lamps
see Tail lamps                                           
Rear seats
see Seats                                                  
Rear view camera  .............................. 169
Cleaning the camera lens  ..............278
Rear window defroster  ..................... 191
Rear window wiper/washer  ............. 104
Recommended tire inflation
pressure  ..................................... 234, 256
Refilling  
AdBlue ®
 ......................................... 347
Refrigerant, air conditioning  ............ 371
Refueling  ............................................ 226
Regular checks  .................................. 228
Reminder, Seat belt see Seat belts, Telltale                              
Remote control
see Key, SmartKey                                    
Remote door unlock (Tele Aid)  ......... 219
Replacing  
Key  .................................................. 74
Replacing bulbs  ................................. 328
Reporting safety defects  .................... 24
Research Octane Number see RON                                                    
Reserve fuel  
Messages in the multifunction
display  ........................................... 309
Warning lamp  ................................... 29
Reset button  ................................ 28, 124Reset tool (NECK-PRO active front
head restraints)  ................................. 325
Restraint systems see Occupant safety                                 
Rims  ........................................... 256, 365
Roadside Assistance  ................... 21, 216
RON (Research Octane Number)  ..... 371
Rubber parts, cleaning  ...................... 279
Run-flat tires see MOExtended tires                               
S
Safety  
Driving safety systems  .....................61
Occupant safety ............................... 36
Reporting defects  ............................ 24
Safety belts
see Seat belts                                           
Seat belt force limiter  ......................... 52
Seat belts  ............................................. 48
Adjustment function  ........................51
Children in the vehicle  .....................55
Cleaning ......................................... 280
Fastening  ......................................... 50
Height adjustment  ...........................51
Proper use of  ................................... 49
Safety guidelines  ............................. 39
Safety notes ..................................... 48
Telltale  ..................................... 29, 317
Seat heating  ......................................... 90
Seating capacity  ................................ 243
Seats  ..................................................... 82
Adjustment  ...................................... 82
Easy-entry/exit feature  ....................92
Folding (expanding cargo volume) . 201
Heating  ............................................ 90
Memory function .............................. 96
Multicontour seat  ............................ 90
Rear seats ........................................ 87
Ventilation  ....................................... 90
Securing cargo  
Cargo tie-down rings ...................... 200
Selective setting
see Key, SmartKey                                    
Selector lever
see Gear selector lever                             
Index15X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 15 

Vehicle equipment ............................284
Where will I find ...? ..........................284
Vehicle status messages in the
multifunction display .......................287
What to do if … ..................................314
Unlocking/locking manually ...........323
Resetting activated NECK-PRO
active front head restraints .............325
Replacing SmartKey batteries .........326
Replacing bulbs .................................328
Replacing wiper blades ....................334
Flat tire ..............................................336
Bleeding the fuel system (diesel
engine only) .......................................345
AdBlue® (diesel engine only) ...........346
Battery ...............................................348
Jump starting ....................................350
Towing the vehicle ............................352
Fuses ..................................................355
283Practical hintsX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 283   

Display messagesPossible causes/consequences and M SolutionsCThe fuel level is low.XRefuel at the next gas station.8Reserve 
FuelThe fuel level has dropped below the reserve mark.XRefuel at the next gas station.8Ultra Low-
sulfur
Diesel 
Fuel OnlyVehicles with diesel engine only:
The fuel level has dropped below the reserve mark.XRefuel at the next gas station.XOnly use commercially available vehicular ULTRA-LOW
SULFUR HIGHWAY DIESEL FUEL (ULSD, 15 ppm SULFUR
MAXIMUM).8Gas Cap 
OpenA loss of pressure has been detected in the fuel system. The
fuel cap may not be closed properly or the fuel system may
be leaking.XCheck the fuel cap ( Y page 227).XIf it is not closed properly:  Close the fuel cap.XIf it is closed properly: Have the fuel system checked at
an authorized Mercedes-Benz Center.¸Replace 
air filterThe air filter is clogged.XHave the air filter checked at an authorized Mercedes-Benz
Center.·Clean 
Fuel 
FilterThere is water in the fuel filter.XHave the water drained at an authorized Mercedes-Benz
Center as soon as possible.ØCheck 
Additive 
See 
Operator's
 ManualThe AdBlue ®
 supply is almost depleted.XHave the AdBlue ®
 tank refilled as soon as possible
( Y  page 346).
Contact an authorized Mercedes-Benz Center.ØRemaining 
Starts: 20The AdBlue ®
 supply has dropped to the minimum level.XHave the AdBlue ®
 tank refilled immediately ( Y page 346).
Contact an authorized Mercedes-Benz Center.i When the message  Remaining 
Starts: 20  appears in the multifunction
display, you can start the engine 20 more
times. If you do not add AdBlue ®
, the
engine cannot be started beyond thatpoint. Therefore, fill the AdBlue ®
 tank with
approximately 1 gal (3.79 l) AdBlue ®
(corresponds to approximately 2 refill
containers AdBlue ®
) or have the AdBlue ®
tank filled at an authorized Mercedes-BenzVehicle status messages in the multifunction display309Practical hintsX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 309Z 

Center. After AdBlue®
 was refilled, the
engine can be started again.
Lamps
Display messagesPossible causes/consequences and  M SolutionsbActive 
Headlamps 
Inoperativ
eThe active Bi-Xenon headlamp system is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.bDaytime 
Running 
Light Left
or
Daytime 
Running 
Light 
RightThe left or right daytime running lamps are malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.bReverse 
Lamp Left
or
Reverse 
Lamp RightThe left or right backup lamp is malfunctioning.XReplace the bulb as soon as possible ( Y page 328).bBrake 
Lamp Left
or
Brake 
Lamp RightThe left or right brake lamp is malfunctioning. A substitute
bulb is being used.XReplace the bulb as soon as possible ( Y page 328).b3rd Brake 
LampThe high-mounted brake lamp is malfunctioning. This
message will only appear if all LEDs have stopped working.XContact an authorized Mercedes-Benz Center as soon as
possible.bFront 
Foglamp 
Left
or
Front 
Foglamp 
RightThe left or right front fog lamp is malfunctioning.XContact an authorized Mercedes-Benz Center as soon as
possible.310Vehicle status messages in the multifunction displayPractical hints
X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 310