
1 Contents
IntroductionProduct information  .......................... 7
Operator’s manual  ............................. 8
Where to find it  ................................ 13
Reporting Safety Defects  ................ 15Instruments and controlsInstruments and controls  ............... 18
Door control panel  ....................... 20
Overhead control panel  ............... 21
Dashboard ..................................... 22
Center console  .............................. 24OperationVehicle keys  ...................................... 28
Start lock-out  .................................... 31
General notes on the 
central locking system  ............... 32
Central locking system  ................... 33
Radio frequency and 
infrared remote control  ............... 33
KEYLESS-GO ................................. 36Opening and closing windows 
and sliding / pop-up roof 
from outside  ................................. 43
Panic button  ................................. 45
Mechanical keys  .......................... 45
Doors ................................................. 46
Power closing assist for 
doors and trunk lid  .................... 48
Central locking switch .................... 48
Automatic central locking .............. 50
Emergency unlocking in 
case of accident  .......................... 50
Trunk ..................................................51
Trunk lamp ....................................... 54
Trunk lid release switch  ................ 55
Trunk lid release/close switch  ...... 56
Trunk lid emergency release  ........ 59
Antitheft alarm system ................... 60
Tow-away alarm  ................................ 61
Easy-entry/exit feature  .................. 63
Front seat adjustment ..................... 64
Removal and installation of 
front seat head restraints .......... 68
Lumbar support  ............................... 69Multicontour backrest ..................... 69
Seat heater  ........................................ 71
Seat ventilation system  ................... 74
Rear seat head restraints ................ 76
Power head restraints, rear  ............ 77
Power seats, rear .............................. 78
Power seats, setting passenger 
seat position from rear ............... 80
Seat belts and integrated 
restraint system  .......................... 81
Seat belts ........................................... 81
Seat belt nonusage 
warning system  ........................... 82
BabySmart
TM airbag 
deactivation system  .................... 88
Self-test BabySmart
TM without 
special child seat installed  ......... 88
Supplemental Restraint 
System (SRS)  ............................... 89
Emergency tensioning 
retractor (ETR) ............................. 90
Airbags .............................................. 91 

20 Instruments and controls
Te ch n i c a l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index
Door control panel1Door handle, pull to open, see page 46
2Memory function (for storing seat, steering wheel, 
rear view mirror and exterior mirror settings), see 
page 108
3Seat heater, see page 71
Seat ventilation, see page 74
4Front seat adjustment, see page 64
5Exterior mirror adjustment, see page 103
6Power window switches, see page 184
7Power window safety switch, rear doors, see 
page 186
8Trunk lid release switch, see page 55
Trunk lid opening/closing system switch, see 
page 56
3
3
3
3
38
76
6 

26 Contents – Operation
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
OperationVehicle keys  ...................................... 28
Start lock-out  .................................... 31
General notes on the 
central locking system  ............... 32
Central locking system  ................... 33
Radio frequency and 
infrared remote control  ............... 33
KEYLESS-GO ................................. 36
Opening and closing windows 
and sliding / pop-up roof 
from outside  .................................. 43
Panic button  .................................. 45
Mechanical keys  ........................... 45
Doors .................................................. 46
Power closing assist for 
doors and trunk lid  ..................... 48
Central locking switch  .................... 48
Automatic central locking  .............. 50
Emergency unlocking in 
case of accident  ........................... 50
Trunk ................................................. 51
Trunk lamp  ....................................... 54Trunk lid release switch  ................ 55
Trunk lid release/close switch  ...... 56
Trunk lid emergency release  ........ 59
Antitheft alarm system ................... 60
Tow-away alarm  ................................ 61
Easy-entry/exit feature  .................. 63
Front seat adjustment ..................... 64
Removal and installation of 
front seat head restraints .......... 68
Lumbar support  ............................... 69
Multicontour backrest  .................... 69
Seat heater ......................................... 71
Seat ventilation system  ................... 74
Rear seat head restraints  ................ 76
Power head restraints, rear  ........... 77
Power seats, rear  ............................. 78
Power seats, setting passenger 
seat position from rear  .............. 80
Seat belts and integrated 
restraint system  ...........................81
Seat belts  ...........................................81
Seat belt nonusage 
warning system  .......................... 82BabySmart
TM airbag 
deactivation system  .................... 88
Self-test BabySmart
TM without 
special child seat installed  ......... 88
Supplemental Restraint 
System (SRS)  ............................... 89
Emergency tensioning 
retractor (ETR) ............................. 90
Airbags .............................................. 91
Safety guidelines for the 
seat belt, emergency 
tensioning retractor 
and airbag  .................................... 97
Infant and child 
restraint systems ......................... 99
Steering wheel adjustment  .......... 102
Rear view mirrors  .......................... 103
Memory function  ........................... 108
Key dependent 
memory settings  ........................ 111
Instrument cluster  ..........................112
Multifunction steering wheel, 
multifunction display  ................118 

30 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
KEYLESS-GO-card
The KEYLESS-GO-card (1) does not have a removable 
mechanical key.
The functions of the KEYLESS-GO-card (1) are identical 
to those of the electronic key. Carrying the card with 
you permits the use of the vehicle.The validity of the KEYLESS-GO-card is checked every 
time when grasping a door handle or pushing the trunk 
lid release. Once the KEYLESS-GO-card is recognized 
outside the vehicle, the doors, trunk lid and fuel filler 
flap are unlocked, depending on the selected mode 
(global or selective unlocking mode, see page 41).
Starter switch KEYLESS-GO, see page 230.
Starting and turning off the engine with KEYLESS-GO, 
see page 236 and page 236.
Note:
In the case of a malfunction in the KEYLESS-GO-system, 
we recommend that you carry the electronic key plus 
mechanical key with you and keep them in a safe place 
so that they are always handy. Never leave the electronic 
key or a KEYLESS-GO-card in the vehicle.
Obtaining replacement keys
Your vehicle is equipped with a theft deterrent locking 
system requiring a special key manufacturing process. 
For security reasons, replacement keys can only be 
obtained from your authorized Mercedes-Benz Center.
P80.30-2029-26
1 

53 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Vehicles with trunk lid opening / closing system:
Press trunk lid button (2) briefly. The trunk lid closes 
automatically.
The trunk lid can also be closed with the trunk lid 
opening / closing switch located on the driver’s door, see 
page 56.Notes:
The automatic closing process is interrupted if the 
trunk lid is pushed against an object. The trunk lid will 
reverse slightly and stop. In its final closing stage the 
hydraulic power closing assist mechanism releases the 
trunk lid which then drops into the lock by its own 
weight. Now the trunk lid will stop but not reverse 
slightly. 
Investigate and correct the cause of interruption.
Now press trunk lid button (2) again to close the trunk 
lid.
P54.25-2403-26
Wa r n i n g !
To prevent possible personal injury, always keep 
hands and fingers away from the trunk opening 
when closing the trunk lid. Be especially careful 
when small children are around.Always be sure persons who might get injured are 
away from the trunk area when you operate the 
trunk closing button located on the vehicle door.To interrupt the hydraulic power closing assist 
mechanism press trunk lid close button (2) inside 
the trunk lid, push in trunk lid lock or press 
buttonŠ on the electronic key. 

55 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Trunk lid release switch 
(Vehicles without trunk lid opening / closing system)
The switch is located on the driver’s door.The trunk lid will swing open automatically. You should 
always make sure there is sufficient clearance.
A minimum height clearance of 6 ft. (1.85 m) is 
required to open the trunk lid.
To open the trunk, the vehicle must be at standstill. Pull 
up on switch until trunk lid is open.
The indicator lamp in the switch remains on with trunk 
lid open.
Notes:
The trunk can also be opened by using the remote 
control. Press Šbutton.
The trunk lid cannot be opened by the switch or the 
remote control when previously locked separately with 
the mechanical key. To open, see page 51.
The trunk lid cannot be opened with the trunk lid 
release switch when the vehicle was previously locked 
with the remote control. To unlock vehicle with the 
remote control, see page 33. 

56 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Trunk lid opening / closing system (optional)
The switch is located on the driver’s door.
The trunk lid will open and close automatically. You 
should always make sure that there is sufficient 
clearance.
A minimum height clearance of 6 ft. (1.85 m) is 
required to open the trunk lid.
To open and close the trunk, the vehicle must be at 
standstill. To  o p e n  t r u n k  l i d :
Pull up on switch until trunk lid begins to open. The 
switch can now be released, the trunk lid opens 
automatically.
To interrupt the opening process, either pull up on 
switch, or push in trunk lid lock, or press buttonŠ 
on the remote control.
The indicator lamp in the switch remains on with trunk 
lid open.
To close trunk lid:
Press upper half of switch until trunk lid is closed and 
the indicator lamp in the switch goes out.
Wa r n i n g !
When closing the trunk lid, be sure that there is no 
danger of anyone being harmed by the closing 
procedure. Be especially careful when small 
children are around. Maintain sight of trunk area 
while operating the door mounted switch.To interrupt the hydraulic power closing assist 
mechanism release trunk lid release/close switch 
and pull up to open. 

57 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Notes:
The automatic closing process is interrupted, if the 
trunk lid is pushed against an object. The trunk lid will 
reverse slightly and stop. In its final closing stage the 
hydraulic power closing assist mechanism releases the 
trunk lid which then drops into the lock by its own 
weight. Now the trunk lid will stop but not reverse 
slightly.
Investigate and correct the cause of interruption.
Now press trunk lid opening/closing switch again to 
close the trunk lid.
In case of a malfunction the trunk lid can be opened and 
closed manually.
To open, unlock trunk lid with the mechanical key and 
open lid by hand, see page 51.
To close, lower trunk lid with hands placed flat on trunk 
lid. Please remember to keep your fingers out of the 
space between the lid and the vehicle.The trunk can also be opened by using the remote 
control. PressŠ button.
The trunk lid cannot be opened by the switch or the 
remote control when previously locked separately with 
the mechanical key. To open, see page 51.
The trunk lid cannot be opened with the trunk lid 
opening/closing switch when the vehicle was 
previously locked with the central locking switch. To 
unlock vehicle with the central locking switch, see 
page 48.
Ve h i c l e s  w i t h  K E Y L E S S - G O :  
To prevent a possible inadvertent lockout, the trunk lid 
will open automatically if a KEYLESS-GO-card is 
recognized in the area of rear shelf or inside the trunk.