
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 

Locking/unlocking from inside ........71
SmartKey  ......................................... 66
Central locking/unlocking switch  ..... 71
Certification label  .............................. 328
Children in the vehicle  
Air bags  ........................................... 37
BabySmart™ air bag deactivation
system  ............................................. 45
Child safety locks (rear doors)  .........58
Child seat anchors – LATCH-type
(ISOFIX)  ........................................... 57
Indicator lamp, front passenger
front air bag off (Canada only)  .........45
Indicator lamp, front passenger
front air bag off (USA only)  ..............42
Infant and child restraint systems .... 54
ISOFIX (Child seat anchors –
LATCH-type) ..................................... 57
OCS (Occupant Classification
System)  ........................................... 42
Override switch  ................................ 58
Safety notes ..................................... 53
Tether anchorage points  ..................56
Top tether  ........................................ 56
Child safety
see Children in the vehicle                        
Child seat anchors – LATCH-type
(ISOFIX) see Children in the vehicle                        
Chrome-plated exhaust tip,
cleaning  .............................................. 257
Cigarette lighter  ................................ 197
Clear button  ....................................... 130
Climate control system  .................... 177
Air conditioning  ............................. 179
Air conditioning refrigerant  ............336
Air distribution  ............................... 181
Air recirculation mode  ...................183
Air volume  ..................................... 182
Automatic mode  ............................ 179
Deactivating system  ......................179
Front defroster  .............................. 182
Maximum cooling MAX COOL  ........182
Temperature  .................................. 180
Clock  ............................................ 29, 121
Coat hooks  ......................................... 189
Cockpit  ................................................. 27
Cold tire inflation pressure  .............. 239Collapsible tire (spare wheel)  .......... 333
Collapsible wheel chock  ................... 261
COMAND system see separate COMAND system
operating instructions                               
Combination gauge  ............................. 28
Combination switch  ............................ 90
Compass  ............................................ 199
Control system  .................................. 110
Multifunction display  .....................112
Multifunction steering wheel  .........110
Resetting to factory settings  ..........119
Control system menus  ...................... 113
Audio  ............................................. 115
Navi  ............................................... 115
Service ........................................... 118
Settings  ......................................... 119
Telephone  ...................................... 117
Trip  ................................................ 113
Control system submenus  
Convenience  .................................. 124
Instrument cluster  .........................120
Lighting  .......................................... 122
Time/Date  ..................................... 121
Vehicle  ........................................... 123
Convenience submenu  
Easy-entry/exit feature .................. 124
Fold-in function for exterior rear
view mirrors  ................................... 124
Coolant  
Anticorrosion/antifreeze  ...............338
Capacities  ...................................... 334
Checking level  ............................... 216
Messages in the multifunction
display  ........................................... 279
Temperature gauge ........................ 109
Warning lamp ................................. 295
Coolant temperature gauge  ............... 28
Corner-illuminating lamps  .................. 91
Replacing bulbs  ............................. 304
Cruise control  .................................... 168
Activating ....................................... 169
Canceling  ....................................... 169
Changing the set speed  .................170
Last stored speed  ..........................170
Lever .............................................. 169
Messages in the multifunction
display  ........................................... 2676IndexX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 6 

FunctionPage?Press button % briefly:to go to the next higher
menu level
111
to confirm display message111to cancel the Voice Control
System 2Press and hold button
%  to select the standard
display.
112
APress button  = or ; :111to call up line for menusto scroll to the left or right
to select menusPress button  9 or :
briefly:
111
to select submenusto scroll up or down through
liststo select previous or next
track, scene, or stored
station within  Audio menu
115
to switch to the phone book
and select a name or
number within  Tel menu
117
Press and hold button
9  or : :
111
to select previous or next
track or scene with quick
search or to select previous
or next station in waveband
(if no station list is
available) within  Audio
menu
115
to start the quick search in
the phone book within  Tel
menu
117
FunctionPagePress button  a:to confirm selection or
message
112
to switch to the phone
book 1
117
to dial a selected phone
number 1
1172
The Voice Control System is only available with the COMAND system. Refer to separate operating
instructions.
1 Function only available in telephone menu.30Multifunction steering wheelAt a glance
X204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 30 

Center console
Lower part 
FunctionPage:Ashtray196Cigarette lighter197;Gear selector lever for
automatic transmission103
=Cup holder195?Front armrest storage
compartments192
AAudio controller129COMAND controller (see
separate operating
instructions)
BProgram mode selector
switch for automatic
transmission106
Upper part FunctionPage:Hazard warning flasher
switch90
;Alarm system indicator
lamp63
=Front passenger front air
bag off indicator lamp, USA
only
42,
298
Front passenger front air
bag off indicator lamp,
Canada only
45,
297
?Electronic Stability
Program (ESP®) switch63
AAudio system125orCOMAND system, see
separate operating
instructions
BSeat heating, front
passenger side81
CParktronic system
deactivation switch174
Center console31At a glanceX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 31Z     

Vehicle equipment ..............................66
Locking and unlocking .......................66
Starter switch positions .....................76
Seats ....................................................78
Multifunction steering wheel .............82
Mirrors .................................................83
Memory function .................................86
Lighting ................................................87
Wipers ..................................................93
Power windows ...................................95
Driving and parking ............................98
Automatic transmission ...................103
Transfer case ....................................108
Instrument cluster ............................108
Control system ..................................110
Audio system ....................................125
Driving systems ................................168
Climate control system ....................177
Rear window defroster .....................184
Panorama roof with power tilt/
sliding panel ......................................184
Loading and storing ..........................187
Useful features .................................195
65Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 65   

If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.
The language setting for the multifunction
display can be changed with the audio system
(Y page 136) or with the COMAND system.
Vehicles with COMAND system: Refer to
separate operating instructions.
Activating the instrument cluster
The instrument cluster is activated when you
Ropen the driver’s door
Rswitch on the ignition
Adjusting the instrument cluster 
illumination
XTo brighten illumination: Turn
dimmer : clockwise.
XTo dim illumination: Turn dimmer :
counterclockwise.
iThe instrument cluster illumination is
dimmed or brightened automatically to suit
ambient light conditions.
The instrument cluster illumination will also
be adjusted automatically when you switch
on the vehicle’s exterior lamps.
Coolant temperature gauge
The coolant temperature gauge is located on
the left side in the instrument cluster
(Y page 28).
GWarning!
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
During severe operating conditions, e.g. stop-
and-go traffic, the coolant temperature may
rise close to 248‡ (120†), i.e close to the
red zone of the temperature gauge.
! Excessive coolant temperature triggers a
warning in the multifunction display.
The engine should not be operated with a
coolant temperature above 248‡ (120†),
i.e. in the red zone of the coolant
temperature gauge. Doing so may cause
serious engine damage which is not
covered by the Mercedes-Benz Limited
Warranty.
Tachometer
The red marking on the tachometer
(Y page 28) denotes excessive engine speed.
! Avoid driving at excessive engine speeds,
as it may result in serious engine damage
that is not covered by the Mercedes-Benz
Limited Warranty.
To help protect the engine, the fuel supply is
interrupted if the engine is operated within
the red marking.
Instrument cluster109Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 109Z   

Press buttonW
Xto set the volume=Press button?to activate the Voice Control
System 8?Press button briefly%to cancel the Voice Control
System 8
to go back
to confirm messagesPress and hold button%to select the standard displayAPress button;
=to call up line for menus and to
select menusPress button briefly9
:to select submenu or scroll
through lists
within  Audio menu to select
previous or next track, scene or
stored station
within  Tel menu to switch to
the phone book and select a
name or numberPress and hold button9
:within  Audio menu to select a
track or scene with quick
search or to select previous or
next station in station list or
wave band
within  Tel menu to start the
quick search in the phone bookPress buttonato confirm selection or
messages
Depending on the selected menu, pressing
the buttons on the multifunction steering
wheel will alter what appears in the
multifunction display.
The information available in the multifunction
display is arranged in menus and
accompanying functions and submenus.
The individual functions are then found within
the relevant menu (radio or CD operations
under  Audio, for example). These functions
serve to call up relevant information or to
customize the settings for your vehicle.
It is helpful to think of the menus, and the
functions within each menu, as being
arranged in a circular pattern.
In the  Settings  menu, instead of functions,
you will find a number of submenus for calling
up and changing settings. For instructions on
using these submenus, see “Settings menu”
( Y  page 119).
The number of menus available in the system
depends on which optional equipment is
installed in your vehicle.
Using the control system
XTo select a menu:  Press button =
or  ; .XTo select a submenu:  Press button :
or  9 .8
The Voice Control System is only available with the COMAND system. Refer to separate operating
instructions.Control system111Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 111Z 

Menus and submenusFunction:Trip menu (Y page 113);Navi menu (Y page 115)=Audio menu (Y page 115)?Tel menu (Y page 117)AService menu (Y page 118)BSettings menu (Y page 119)
Trip menu
In the Trip menu, you can show an additional
display for the speedometer and call up or
reset your vehicle’s statistical data.
The following information is available:
RStandard display (Y page 113)
RFuel consumption statistics since start
(Y page 114)
RFuel consumption statistics since last reset
(Y page 114)
RResetting values (Y page 114)
RRemaining driving range and current fuel
consumption (Y page 114)
RDigital Speedometer (Y page 115)
Standard display 
In the standard display, the trip
odometer : and the main odometer ;
appear in the multifunction display.
If another display appears instead of the
standard display:
XPress button = or ; to select the
Trip menu.
or
XPress button % repeatedly until the
standard display appears.
Control system113Controls in detailX204_AKB; 3; 23, en-USd2ureepe,Version: 2.11.8.12009-07-16T19:16:58+02:00 - Seite 113Z