
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 

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 

28 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Vehicle keys and KEYLESS-GO-cards (optional)
Included with your vehicle are:
•2 electronic keys with integrated radio frequency 
and infrared remote controls plus removable 
mechanical key.
The locking tabs for the mechanical key portion of 
the two electronic keys are a different color to help 
distinguish each individual key.
•Vehicles with KEYLESS-GO:
2 KEYLESS-GO-cards without removable mechanical 
key.Vehicles with KEYLESS-GO:
See page 42 on how to use the electronic key together 
with the KEYLESS-GO-card.
Important!
In the case of the loss of a KEYLESS-GO-card, electronic 
keys or mechanical keys, please, contact an authorized 
Mercedes-Benz Center or call 1-800-FOR-MERCedes (in 
the USA), or 1-800-387-0100 (in Canada) as soon as 
possible to have the keys or KEYLESS-GO-card 
deactivated.
Wa r n i n g !
When leaving the vehicle always remove the 
electronic key from the starter switch, and lock 
your vehicle. Do not leave children unattended in 
the vehicle, or with access to an unlocked vehicle. 
Unsupervised use of vehicle equipment may cause 
serious personal injury. 

48 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Power closing assist for doors and trunk lid 
(optional on model S 430 for Canada)
The doors and the trunk lid close automatically if:
•the doors are positioned against the lock, 
•the trunk lid is lowered against the lock.
It is not necessary to slam the door or trunk lid closed, a 
pneumatic power-assisted mechanism draws doors and 
trunk lid closed quietly and automatically once the lid 
or door has been latched. When the pneumatic power-
assisted mechanism has stopped, doors and / or trunk 
can be reopened.Central locking switch
1Locking
2Unlocking
The central locking switch is located in the center 
console.
The doors and trunk can only be locked with the central 
locking switch, if all doors are closed except the driver’s 
door.
Wa r n i n g !
To prevent possible personal injury, always keep 
hands and fingers away from the door or trunk 
opening when closing a door or the trunk lid. Be 
especially careful when small children are around.The pneumatic power closing assist mechanism 
cannot be interrupted once it has been engaged.To prevent personal injury, never actuate the 
closing assist mechanism by tampering with the 
door or trunk lid latch. 

49 Central locking system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Important!
When the driver’s door is open and the central locking 
switch activated, the complete vehicle is locked after 
closing driver’s door.
If the vehicle was previously locked with the central 
locking switch, while in the selective remote control 
mode, only the door opened from the inside is unlocked.
If the vehicle was previously locked with the central 
locking switch, while in the global remote control mode, 
the complete vehicle is unlocked when a door is opened 
from the inside.
Notes:
If the vehicle was previously locked with the remote 
control or the lock button at any door handle (vehicles 
with KEYLESS-GO), the doors and trunk cannot be 
unlocked with the central locking switch.
The fuel filler flap cannot be locked or unlocked with 
the central locking switch.If the vehicle has previously been locked from the 
outside, opening a door from the inside will trigger the 
alarm. To cancel the alarm, insert the electronic key in 
the starter switch or press buttonŒ or‹ on the 
electronic key; or (vehicles with KEYLESS-GO) when 
carrying the KEYLESS-GO-card, grasp the door handle 
or press the start- / stop button on the gear selector lever.
Wa r n i n g !
When leaving the vehicle always remove the 
electronic key from the starter switch, take the 
KEYLESS-GO-card (if so equipped) with you, and 
lock your vehicle. Do not leave children unattended 
in the vehicle, or with access to an unlocked 
vehicle. Unsupervised use of vehicle equipment 
may cause serious personal injury. 

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. 

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. 

63 Easy-entry/exit feature
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Easy-entry / exit feature
The switch is located on the steering column adjustment 
lever.
Turn the switch in direction:
1to switch on
2to switch offWith the easy-entry/exit feature activated, the steering 
wheel tilts upwards to allow easier entry into and exit 
from the vehicle when the driver’s door is opened. 
However, the engine must be turned off.
When the electronic key is inserted in the starter switch 
or, with a valid KEYLESS-GO-card, when pressing the 
start- / stop button on the gear selector lever, and if the 
driver’s door is closed, the steering wheel returns to the 
last position set for it.
Wa r n i n g !
You must ensure that no one can become trapped 
or injured by the moving steering wheel when the 
easy-entry / exit feature is activated and the 
driver’s door is being opened or the electronic key 
removed from the starter switch. Do not leave 
children unattended in the vehicle, or with access 
to an unlocked vehicle. Unsupervised use of vehicle 
equipment may cause serious personal injury.