2012 MERCEDES-BENZ S-CLASS SEDAN door lock

XTurn the mechanical key counter-clockwise
from position 1 as far as it will go to
position 2.
The trunk is unlocked.XTurn the mechanical key back to position
1 and remove it.XInsert the mechanical key into the
SmartKey.
Trunk emergency release
You can open the trunk lid from inside the
vehicle with the emergency release button.
XBriefly press emergency release
button :.
The trunk lid unlocks and opens.
The trunk lid can be unlocked and opened
with the trunk lid emergency release when
the vehicle is stationary or while driving.
Trunk lid emergency release light:
R emergency release button : flashes for
30 minutes after the trunk lid is opened
R emergency release button : flashes for
60 minutes after the trunk lid is closed.
The trunk lid emergency release does not
open the trunk lid if the battery is
disconnected or discharged.
Side windows
Important safety notes
GWARNING
When opening or closing the door windows,
make sure that there is no danger of anyone
being harmed by the opening/closing
procedure.
The door windows are equipped with
automatic operation and the anti-entrapment
feature. If in automatic mode a door window
encounters an obstruction that blocks its
path, the anti-entrapment feature will stop the
door window and open it slightly.
The door windows operate differently when
the switch is pulled. See the "Problems with
door windows" section for details.
The closing of the door windows can be
immediately halted by releasing the switch or,
if the switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
Activate the override switch when children
are riding in the back seats of the vehicle. The
children may otherwise injure themselves,
e.g. by becoming trapped in the door window
opening.
GWARNING
Do not keep any part of your body up against
the window pane when opening a window. The
downward motion of the pane may pull that
part of your body down between the window
pane and the door frame and trap it there. If
there is a risk of entrapment, release the
switch and pull it to close the window.
Side windows95Opening/closingZ

Opening and closing the side
windows:Front left;Front right=Rear right?Rear left
The switches for all side windows are located
on the driver's door. There is also a switch on
each door for the corresponding side window.
The switches on the driver's door take
precedence.
i The side windows cannot be operated
from the rear when the override feature for
the side windows is activated ( Y page 71).
XTurn the SmartKey to position 1 or 2 in the
ignition lock.XTo open: press the corresponding switch.XTo close: pull the corresponding switch.
i
If you press the switch beyond the point
of resistance, an automatic opening/
closing process is started in the
corresponding direction. You can stop
automatic operation by operating the
switch again.
i You can continue to operate the side
windows after you switch off the engine or
remove the SmartKey. This function is
available for up to five minutes or until the
driver's or front-passenger door is opened.
Sunblinds on the rear side windowsXTo close fully: pull the corresponding
switch when the side window is closed.XTo open fully: press the corresponding
switch.
i You can use the switches on the rear
doors to close the rear roller sunblinds for
the opposite side.
Convenience opening
You can ventilate the vehicle before you start
driving. To do this, the key is used to carry out
the following functions simultaneously:
R unlock the vehicle
R open the side windows
R open the roller sunblinds on the rear side
windows
R open the sliding sunroof or the panorama
roof with power tilt/sliding panel and the
roller sunblinds
R switch on the seat ventilation for the
driver's seat
i The convenience opening feature can
only be operated using the SmartKey. The
SmartKey must be close to the driver's
door handle.
XPoint the tip of the SmartKey at the driver's
door handle.XPress and hold the % button until the
side windows and the sliding sunroof or the
panorama roof with power tilt/sliding
panel are in the desired position.
If one of the sunblinds is closed, the sunblind
will open first.
i The roller sunblinds of the panorama roof
with power tilt/sliding panel and the roller
sunblinds on the rear side windows are
opened at the same time.
XPress and hold the % button again until
the side windows and the sliding sunroof or96Side windowsOpening/closing

the panorama roof with power tilt/sliding
panel are in the desired position.XTo interrupt convenience opening:
release the % button.
Convenience closing
General notes
When you lock the vehicle, you can
simultaneously:
R close the side windows
R close the sliding sunroof or the panorama
roof with power tilt/sliding panel
On vehicles with roller sunblinds, you can
then close the roller sunblinds.
i The roller sunblinds of the panorama roof
with power tilt/sliding panel and the roller
sunblinds on the rear side windows are
closed at the same time.
GWARNING
When closing the door windows and the
sliding sunroof or panorama roof with power
tilt/sliding panel, make sure that there is no
danger of anyone being harmed by the closing
procedure.
If potential danger exists, proceed as follows:
R Release the & button to stop the closing
procedure. To open, press and hold the
% button. To continue the closing
procedure after making sure that there is
no danger of anyone being harmed by the
closing procedure, press and hold the
& button.
Vehicles with KEYLESS-GO:
R Release the sensor surface on the outside
door handle to stop the closing procedure.
R Immediately pull on the same outside door
handle and hold firmly. The door windows
and the sliding sunroof or panorama roof
with power tilt/sliding panel will open for
as long as the door handle is held but the
door is not opened.
Using the SmartKey
i The SmartKey must be close to the
driver's door handle.
XPoint the tip of the SmartKey at the driver's
door handle.XPress and hold the & button until the
side windows and the sliding sunroof or the
panorama roof with power tilt/sliding
panel are fully closed.XMake sure that all the side windows and the
sliding sunroof or panorama roof with
power tilt/sliding panel are closed.
On vehicles with roller sunblinds:
XPress the & button again until the roller
sunblinds close.XTo interrupt convenience closing:
release the & button.
Using KEYLESS-GO
The KEYLESS-GO key must be outside the
vehicle. All the doors must be closed.
XTouch recessed sensor surface : on the
door handle until the side windows and the
sliding sunroof or the panorama roof with
power tilt/sliding panel are fully closed.
i Make sure you only touch recessed
sensor surface :.
Side windows97Opening/closingZ

XMake sure that all the side windows and the
sliding sunroof or panorama roof with
power tilt/sliding panel are closed.XTo interrupt convenience closing:
release recessed sensor surface : on the
door handle.
On vehicles with roller sunblinds:
XTouch the recessed sensor surface on the
door handle again until the roller sunblinds
close.XTo interrupt the roller sunblind closing
procedure: pull the exterior door handle
and hold it firmly.
Resetting the side windows
You must reset each side window if:
R a side window cannot be closed
automatically
R a side window opens again slightly after
being closed manually
XClose all the doors.XTurn the SmartKey to position 1 or 2 in the
ignition lock.XPull the corresponding switch on the door
control panel until the side window is
completely closed. ( Y page 96)XHold the switch for an additional second.
If the side window opens again slightly:
XImmediately pull the corresponding switch
on the door control panel until the side
window is completely closed ( Y page 96).XHold the switch for an additional second.XIf the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again.Problems with the side windows
Problem: a side window cannot be closed
because it is blocked by objects, e.g.
leaves in the window guide.XRemove the objects.XClose the side window.
Problem: a side window cannot be closed
and you cannot see the cause.
GWARNING
Closing the side windows with increased force
or without the anti-entrapment feature could
lead to serious or even fatal injury. Make sure
that nobody can become trapped when
closing the side windows.
If a side window is obstructed during closing
and reopens again slightly:
XImmediately after the window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed with increased
force.
If a side window is obstructed again during
closing and reopens again slightly:
XImmediately after the window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed without the anti-
entrapment feature.GWARNING
Pulling and holding the switch to close the
door window immediately after it had been
blocked two times will cause the door window
to close without the anti-entrapment feature
for as long as you hold the switch.
Sliding sunroof
Important safety notes
Your vehicle may be equipped with a sliding
sunroof or a panorama roof with power tilt/
sliding panel. In the following section, the
98Sliding sunroofOpening/closing

term "sliding sunroof" refers to both types of
sliding sunroof.GWARNING
When opening or closing the sliding sunroof,
make sure that there is no danger of anyone
being harmed by the opening/closing
procedure.
The sliding sunroof is equipped with
automatic operation and the anti-entrapment
feature. If the movement of the sliding sunroof
is blocked during the closing procedure, the
sliding sunroof will stop and open slightly.
The sliding sunroof operates differently when
the sliding sunroof switch is pressed and held.
See the "Problems with the sliding sunroof"
section for more details.
The opening/closing procedure of the sliding
sunroof can be immediately halted by
releasing the sliding sunroof switch or, if the
sliding sunroof switch was moved past the
resistance point and released, by moving the
sliding sunroof switch in any direction.
GWARNING
The sliding sunroof is made out of glass. In the
event of an accident, the glass may shatter.
This may result in an opening in the roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury for
occupants wearing their seat belts properly,
as entire body parts or portions of them may
protrude from the passenger compartment.
! Only open the sliding sunroof if it is free
of snow and ice. Otherwise, malfunctions
may occur.
Do not allow anything to protrude from the
sliding sunroof. Otherwise, the seals could
be damaged.
! The weather can change abruptly. It could
start to rain or snow. Make sure that the
sliding sunroof is closed when you leave the
vehicle. The vehicle electronics can be
damaged if water enters the vehicle
interior.
i Resonance noises can occur in addition
to the usual airflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or open a side window slightly to reduce or
eliminate these noises.
Operating the sliding sunroof
Opening and closing
i You can continue to operate the sliding
sunroof after switching off the engine or
removing the SmartKey from the ignition
lock. This function remains active for five
minutes or until you open a front door.
Overhead control panel
:To raise;To open=To close/lowerXTurn the SmartKey to position 1 or 2 in the
ignition lock.XPress or pull the 3 switch in the
corresponding direction.
i If you press the 3 switch beyond the
point of resistance, an automatic opening/
closing process is started in the
corresponding direction. You can stop
automatic operation by operating the
switch again.
Sliding sunroof99Opening/closingZ

being injured by the opening or closing
procedure.
The rear roller sunblind is equipped with
automatic operation and the anti-entrapment
feature. If the movement of the rear roller
sunblind is blocked during the closing
procedure, the rear roller sunblind will stop
and retract slightly.
The opening or closing of the rear roller
sunblind can be immediately halted by
releasing the sunblind switch or, if the
sunblind switch was moved past the
resistance point and released, by pressing or
pulling the sunblind switch again.
Door control panel in rear
XTo open/close manually: press or pull
switch : to the point of resistance and
hold it until the rear roller sunblind has
reached the desired position.XTo open/close fully: press or pull
switch : beyond the point of resistance
and release it.
i You can stop automatic operation by
operating the switch again.
Resetting the panorama roof with
power tilt/sliding panel or the front
roller sunblind
Reset the panorama roof with power tilt/
sliding panel or the front roller sunblind if the
panorama roof with power tilt/sliding panel
or the roller sunblinds do not move smoothly.
! Do not open the panorama roof with
power tilt/sliding panel until it has been
reset correctly. The panorama roof with
power tilt/sliding panel can otherwise be
locked in the open position.XTurn the SmartKey to position 1 or 2 in the
ignition lock.XPull the 3 switch repeatedly to the point
of resistance in the direction of arrow
= (Y page 100) until the panorama roof
with power tilt/sliding panel is fully closed.XKeep the 3 switch pulled for an
additional second.XPull the 3 switch in the direction of
arrow =(Y page 101) repeatedly until the
front roller sunblind is closed.XKeep the 3 switch pulled for an
additional second.XMake sure that the panorama roof with
power tilt/sliding panel ( Y page 100) and
the front roller sunblind ( Y page 101) can
be fully opened again.XIf this is not the case, repeat the steps
above again.
Resetting the rear sunblind
Door control panel in rear
XTurn the SmartKey to position 1 or 2 in the
ignition lock.XPull switch : repeatedly until the rear
roller sunblind is fully closed.XKeep switch : pulled for an additional
second.102Sliding sunroofOpening/closing

Problems with the seat ventilation
The seat ventilation has switched off
prematurely. The vehicle's electrical system
voltage is too low because too many electrical
consumers are switched on.
XSwitch off electrical consumers which you
do not need, such as the rear window
defroster or interior lighting.
Steering wheel
Important safety notes
GWARNING
Do not adjust the steering wheel while driving.
Adjusting the steering wheel while driving
could cause the driver to lose control of the
vehicle.
The electrical steering wheel adjustment
feature can be operated at any time.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child's unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.
Adjusting the steering wheel
:To adjust the steering wheel position
(fore-and-aft adjustment);To adjust the steering wheel heighti Other topics:
R EASY-ENTRY/EXIT feature
( Y page 115)
R storing settings ( Y page 118)
R operating the on-board computer
( Y page 375)
Steering wheel heating
Switching on/off
The steering-wheel heating heats the leather
areas of the steering wheel.
XMake sure that the SmartKey is in position
2 in the ignition lock.XTo switch on/off: turn the lever in the
direction of arrow : or ;.
Indicator lamp = lights up or goes out.
Vehicles without KEYLESS-GO: when you
remove the SmartKey from the ignition lock,
the steering wheel heating is deactivated.
Vehicles with KEYLESS-GO: when you switch
off the ignition and open the driver's door, the
steering wheel heating is deactivated.
i The steering wheel heating is deactivated
when the temperature in the vehicle
interior is higher than 86 ‡ (30 †).
i The steering wheel heating is switched off
automatically after about 24 minutes.
114Steering wheelSeats, steering wheel and mirrors

EASY-ENTRY/EXIT feature
Important safety notes
The EASY-ENTRY/EXIT feature makes getting
in and out of your vehicle easier.
You can activate and deactivate the EASY-
ENTRY/EXIT feature using COMAND
( Y page 266).
GWARNING
You must make sure no one can become
trapped or injured by the moving steering
wheel and driver's seat when the EASY-
ENTRY/EXIT feature is activated.
To stop steering wheel and seat movement,
do one of the following:
R move the seat adjustment switch.
R move the steering column adjustment
switch.
R press one of the memory function position
buttons or memory button M.
Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Children could open the driver's door and
unintentionally activate the EASY-ENTRY/
EXIT feature. This could result in an accident
and/or serious personal injury.
GWARNING
Let the system complete the adjustment
procedure before setting the vehicle in
motion. All steering wheel adjustment must
be completed before setting the vehicle in
motion. Driving off with the steering wheel
still adjusting could cause the driver to lose
control of the vehicle.
! Do not activate the EASY-ENTRY/EXIT
feature, if the seat backrest is reclined too
far backwards. This can damage the front
or rear seats. You must first move the
backrest to a vertical position.
Position of the steering wheel and the
driver's seat when the EASY-ENTRY/
EXIT feature is active
The steering wheel tilts upwards and the
driver's seat moves backwards if you:
R remove the SmartKey from the ignition lock
R open the driver's door when the SmartKey
is in the ignition lock or KEYLESS-GO is in
position 1
i The steering wheel only moves upwards if
it has not already reached the upper end
stop. The driver's seat only moves
backwards if it is not already in the
rearmost position.
Position of the steering wheel and the
driver's seat for driving
If you insert the SmartKey into the ignition
lock with the driver's door closed, depending
on the setting, the position of the steering
wheel and the driver's seat will be changed to
the previously set position.
The last position of the steering wheel or seat
is stored if:
R the ignition is switched off or
R the setting is stored with the memory
function.
Crash-responsive EASY-EXIT feature
If the crash-responsive EASY-EXIT feature is
triggered in an accident, the steering column
will move upwards when the driver's door is
opened. This occurs irrespective of the
position of the SmartKey in the ignition lock.
This makes it easier to exit the vehicle and
rescue the occupants.
The crash-responsive EASY-EXIT feature is
only operational if the EASY-EXIT/ENTRY
feature is activated in the on-board computer.
Steering wheel115Seats, steering wheel and mirrorsZ