
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 

Through standing water .................262
With Distronic  ................................ 153
Driving and parking  
Safety notes  .................................. 108
Driving off  .................................. 110, 261
Driving safety systems  ....................... 61
4-ETS  ............................................... 64
ABS  .................................................. 62
BAS  .................................................. 63
EBP  .................................................. 63
ESP ®
 ................................................ 63
Driving systems  
Air suspension program  .................159
All-wheel drive (4MATIC) ................ 166
Cruise control  ................................ 144
Distronic  ........................................ 147
Downhill Speed Regulation (DSR)  ..155
Hill-start assist system  ..................155
Off-road driving program  ...............158
Parktronic system  ..........................166
Rear view camera  .......................... 169
Driving tips, automatic
transmission  ...................................... 117
DSR (Downhill Speed Regulation)  .... 155
Messages in the multifunction
display  ........................................... 303
E
Easy-entry/exit feature  .............. 92, 139
EBP (Electronic Brake
Proportioning)  ...................................... 63
Electrical system  
Improper work on or
modifications  ................................... 23
Power outlets ................................. 212
Electrical system (Technical data)
see Vehicle specification                          
Electronic Stability Program
see ESP ®
                                                  
Electronic Traction System
see 4-ETS                                                  
Emergency, in case of  
First aid kit ..................................... 284
Flat tire  .......................................... 336
Hazard warning flasher  ..................101
Roadside Assistance ................ 21, 216
Towing the vehicle  .........................352
Emergency calls  
Tele Aid  .......................................... 215
Emergency engine shutdown  ........... 357
Emergency operations  
Limp-home mode  ........................... 119
Remote door unlock (Tele Aid)  .......219
Emergency Tensioning Device
see ETD                                                     
Emission control  ............................... 272
Information label ............................ 361
System warranties  ...........................20
Engine  
Break-in recommendations  ............226
Cleaning ......................................... 276
Compartment  ................................ 228
Malfunction indicator
lamp  ........................................ 29, 320
Messages in the multifunction
display  ........................................... 306
Number .......................................... 361
Starting  .......................................... 108
Turning off  ..................................... 113
Engine (Technical data)
see Vehicle specification                          
Engine compartment  
Radiator  ......................................... 230
Engine coolant
see Coolant                                               
Engine oil  
Adding  ........................................... 231
Additives  ........................................ 371
Checking level  ............................... 230
Consumption  ................................. 230
Messages in the multifunction
display  ........................................... 308
Oil dipstick ..................................... 230
Recommended engine oils and oil
filter  ............................................... 370
ESP ®
 (Electronic Stability
Program)  .............................................. 63
4-ETS  ............................................... 64
Messages in the multifunction
display  ................................... 289, 300
Off-road ESP ®
 .................................. 65
Trailer stabilization ........................... 65
Warning lamp ................................. 3188IndexX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 8 

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 

FunctionRecommendation/NotesCTemperature control, passenger
sidei Set the temperature to 72‡
(22†).( Y  page 178)D±  Rear climate control on/
off or air supply for rear
passenger compartment on/off
(USA only)^  Rear climate control on/
off or air supply for rear
passenger compartment on/off
(Canada only)EAir distribution (directs air
through center and side air
vents)( Y  page 178)FAir distribution (directs air
through the footwells and side
air vents)( Y  page 178)GAir volume displayHDecreasing air volume(Y  page 179)IRear window defroster(Y  page 191)JAir recirculationi
Only use this function for a
short time, e.g. in a tunnel.
Otherwise, the windows can
fog up due to lack of fresh air.( Y  page 180)KInterior temperature sensorLClimate control on/offi
Switches on the climate
control system. The indicator
lamp in button  ^ goes out.(Y  page 177)Notes on climate control
The climate control is operational whenever
the engine is running. You can operate the
climate control system in either the
automatic or manual mode. The system cools
or heats the interior depending on the
selected interior temperature and the current
outside temperature.Nearly all dust particles, pollutants and odors
are filtered out before outside air enters the
passenger compartment through the air
distribution system.GWarning!
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
176Climate controlControls in detail
X164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 176 

and the windows could fog up, impairing
visibility and endangering you and others.
Have a clogged filter replaced as soon as
possible at an authorized Mercedes-Benz
Center.
The air conditioning will not engage (no
cooling) if the  A/C mode is deactivated
( Y  page 177).GWarning!
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
Keep the air intake grille in front of the
windshield free of snow and debris.
i If the vehicle interior is hot, ventilate the
interior before driving off, see “Summer
opening feature”  (Y  page  107). The climate
control will then adjust the interior
temperature to the set value much faster.
Deactivating the climate control 
system
GWarning!
When the climate control system is switched
off, the outside air supply and circulation are
also switched off. Only choose this setting for
a short time. Otherwise the windows could fog
up, impairing visibility and endangering you
and others.
XDeactivating:  Press button ^.
The indicator lamp in the button comes on.XReactivating:  Press button Ã.
i
You can also press button  ^ on the
climate control panel.
If you press button  ¦ to reactivate the
climate control system, the defrosting
mode is activated.
Deactivating the rear climate control 
from the frontXDeactivating:  Press button ±.
The indicator lamp in the button comes on.XReactivating:  Press button ±.
The indicator lamp in the button goes out.
Air conditioning
The air conditioning is operational while the
engine is running and cools the interior air to
the temperature set by the operator. In
addition, the air conditioning dehumidifies
the interior air and helps prevent window
fogging.
GWarning!
If you switch off the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
i Condensation may drip out from
underneath the vehicle. This is normal and
not an indication of a malfunction.
Deactivating
It is possible to deactivate the air
conditioning. The interior air will then no
longer be cooled or dehumidified.
XPress button  Á.
The indicator lamp in the button goes out.
The cooling function switches off after a
short delay.
Activating
Moist air can fog up the windows. You can
dehumidify the interior air with the air
conditioning.
XPress button  Á again.
The indicator lamp in the button comes on.Climate control177Controls in detailX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 177Z 

Rear automatic climate control:Increasing air volume;Temperature control=Air distribution and air volume (automatic
mode)
?Air distribution (directs air through the
side air vents)
AAir distribution (directs air through the
footwells and side air vents)
BRear automatic climate control on/offCDecreasing air volume
Notes on 3-zone automatic climate 
control
With the help of a sun sensor, the automatic
climate control determines the relation of the
sun to the vehicle and automatically adjusts
the inside temperature for every individual
zone.
The automatic climate control is operational
whenever the engine is running. It cools the
vehicle’s interior according to the angle and
intensity of the sun’s rays, the outside
temperature and the selected temperature.
You can operate the automatic climate
control in either the automatic or manual
mode.
Nearly all dust particles, pollutants and odors
are filtered out before outside air enters the
passenger compartment through the air
distribution system.
GWarning!
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a clogged filter replaced as soon as
possible at an authorized Mercedes-Benz
Center.
The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
(Y page 186).
GWarning!
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
Keep the air intake grille in front of the
windshield free of snow and debris.
iIf the vehicle interior is hot, ventilate the
interior before driving off, see “Summer
opening feature” (Y page 107). The climate
control will then adjust the interior
temperature to the set value much faster.
Deactivating the climate control 
system
GWarning!
When the climate control system is switched
off, the outside air supply and circulation are
also switched off. Only choose this setting for
a short time. Otherwise the windows could fog
up, impairing visibility and endangering you
and others.
Deactivating the front climate control
XDeactivating: Press button ^.
The indicator lamp in the button comes on.
3-zone automatic climate control185Controls in detailX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 185Z   

drained completely. Contact an authorized
Mercedes-Benz Center to have the fuel
system drained completely.
! Gasoline engine:
To prevent damage to the catalytic
converters, only use premium unleaded
gasoline in this vehicle.
Any noticeable irregularities in engine
operation should be repaired promptly.
Otherwise, excessive unburned fuel may
reach the catalytic converter, causing it to
overheat and potentially start a fire.
! Diesel engine:
When filling the diesel fuel tank using fuel
containers, place a filling filter, a suede
cloth or a clean flannel cloth as a filter.
Otherwise, particles from the fuel container
could clog the fuel lines and/or the diesel
injection system.
! Diesel engine:
The engine is more susceptible to wear and
damage if you use
Rmarine diesel fuel
Rheating oil
Radditives
The exhaust aftertreatment device will be
seriously damaged if you use any other
diesel fuel than ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL (ULSD, 15 ppm
SULFUR MAXIMUM).
The use of such non-approved fuels and/or
special additives is not covered by the
Mercedes-Benz Limited Warranty.
i Gasoline engine:
Only use premium unleaded gasoline with
a minimum Posted Octane Rating of 91
(average of 96 RON/86 MON).
Information on gasoline quality can
normally be found on the fuel pump. Please
contact gas station personnel in case
labels on the pump cannot be found.
For more information on gasoline, see
“Premium unleaded gasoline (gasoline
engine)” (Y page 371), see “Fuel
requirements” (Y page 371), or contact an
authorized Mercedes-Benz Center, or visit
www.mbusa.com (USA only).
i Diesel engine:
Only use commercially available vehicular
ULTRA-LOW SULFUR HIGHWAY DIESEL
FUEL (ULSD, 15 ppm SULFUR MAXIMUM).
Information on diesel quality can normally
be found on the fuel pump. Please contact
gas station personnel in case labels on the
pump cannot be found.
For more information on diesel fuels, see
“Fuel requirements” (Y page 371), or
contact an authorized Mercedes-Benz
Center, or visit www.mbusa.com (USA
only).
iDiesel engine:
If you have driven the vehicle until the tank
is empty, the fuel system needs to be bled
(Y page 345).
Locking/unlocking the vehicle with the
SmartKey or KEYLESS-GO automatically
locks/unlocks the fuel filler flap.
iIn case the central locking system does
not release the fuel filler flap, see “Fuel filler
flap” (Y page 324).
The fuel filler flap is located on the right-hand
side of the vehicle towards the rear.
XTurn off the engine.At the gas station227OperationX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 227Z   

XThoroughly spray the vehicle with a
diffused jet of water.XDo not spray directly towards the
ventilation intake.XUse plenty of water and rinse the sponge
and chamois frequently.XRinse with clean water and dry with a
chamois thoroughly.
Do not allow cleaning agents to dry on the
finish.
Automatic car wash
You can have your vehicle washed in an
automatic car wash from the start. Brushless
car washes are preferable.
XTo protect the filter system, activate the air
recirculation mode using button  d on
the climate control panel.
!  Do not clean your vehicle in an automatic
touchless car wash which uses caustic
spray. Caustic spray will damage the paint
or ornamental moldings.
If the vehicle is very dirty, prewash it before
running it through the automatic car wash.
!  Make sure the combination switch is set
to wiper setting  $. Otherwise, the rain
sensor could activate and cause the wipers
to move unintentionally. This may lead to
vehicle damage.
Due to the width of the vehicle, fold in
exterior rear view mirrors prior to running
the vehicle through an automatic car wash
to prevent damage to the mirrors.
XWhen taking the vehicle through an 
automatic conveyor-type car wash:
Make sure the automatic transmission
remains in neutral position  N. Observe
instructions, see “Remaining in neutral
position  N” ( Y page 115).
When leaving the automatic car wash, make
sure the mirrors are folded out.
After running the vehicle through an
automatic car wash, wipe any wax off of the
windshield and the wiper blade inserts. This
will prevent smears and reduce wiping noise
which can be caused by residual wax on the
windshield.
Ornamental moldingsXFor regular cleaning and care of ornamental
moldings, use a damp cloth.
!  Do not use chrome cleaner on ornamental
moldings. Although ornamental moldings
may have chrome appearance, they could
be made of anodized aluminum that will be
damaged when cleaned with chrome
cleaner. Instead, use a damp cloth to clean
those ornamental moldings.
For very dirty ornamental moldings of
which you are sure are chrome-plated, use
a chrome cleaner. If in doubt whether an
ornamental molding is chrome-plated,
contact an authorized Mercedes-Benz
Center.
Headlamps, brake lamps, tail lamps, 
side markers, turn signal lenses
XUse a mild vehicle wash detergent, such as
Mercedes-Benz approved Car Shampoo,
with plenty of water.
!  Only use window cleaning solutions that
are suitable for plastic lamp lenses.
Window cleaning solutions which are not
suitable may damage the plastic lamp
lenses of the headlamps. Therefore, do not
use abrasives, solvents or cleaners that
contain solvents.
Vehicle care277OperationX164_AKB; 5; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:30:16+02:00 - Seite 277Z