2011 MERCEDES-BENZ S-Class key battery

iIf the battery voltage is too low, the seat
heating may switch off.
The system automatically switches down
from level 3 to level 2 after approximately
eight minutes.
The system automatically switches down
from level 2 to level 1 after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
XMake sure that the SmartKey is in position
2 in the ignition lock.
XTo switch on: press button : repeatedly
until the desired heating level is set.
XTo switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat heating
The seat heating has switched itself 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
heating or interior lighting.
Switching the seat ventilation on/off
Switching on/off
The three blue indicator lamps in the buttons
indicate the ventilation level you have
selected.
iIf the battery voltage is too low, the seat
ventilation may switch off.
XMake sure that the SmartKey is in position
2 in the ignition lock.
XTo switch on: press button : repeatedly
until the desired ventilation level is set.
iYou can open the side windows and the
sliding sunroof using the "Convenience
opening" feature (Y page 90). The seat
ventilation of the driver's seat
automatically switches to the highest level.
XTo switch off: press button : repeatedly
until all the indicator lamps go out.
Problems with the seat ventilation
The seat ventilation has switched itself 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
heating 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.
Steering wheel107Seats, steering wheel and mirrorsZ

ECOMAND: e.g. to select a station from
presets, select a track, enter directly,
enter a phone number. Rear Seat
Entertainment System: to select a
track, enter directlyFTo leave the menu (back)XPoint the remote control at the
corresponding screen and execute the
functions by pressing the corresponding
button.
i The remote control's function may be
restricted depending on the angle at which
it is pointed at the respective screen.
Selecting the screen for the remote
control
XTurn thumbwheel = until the desired
display is highlighted in the window.
Switching the screen on/off (Rear Seat
Entertainment System only)
If the key is in position 0 or 1 in the ignition
lock (see vehicle Operator's Manual), or the
key is not inserted, the screens in the rear will
switch off after 30 minutes. Before the
screens switch off, they show a message to
this effect.
You can switch the screens back on,
However, this will discharge the starter
battery.
XPoint the remote control at the rear-
compartment screen which has been
selected for remote operation.XPress button : on the remote control.
The respective rear screen switches on or
off.
i You can only switch the screens on using
the remote control if the ignition is
switched on.
Switching button lighting on/offXPress button ; on the remote control.
Depending on the previous status, the
button lighting is switched on or off.
i If you do not use the remote control for
about 15 seconds, the button lighting
switches off automatically.
Mute
XPress button B on the remote control.
The sound is switched on/off.
Adjusting the volume
This function is available for COMAND and for
the Rear Seat Entertainment System in
conjunction with corded headphones.
XPress one of buttons C on the remote
control.
The volume of the currently selected audio
or video source changes.
For COMAND, you can also adjust the
volume for phone calls and navigation
announcements.
Selecting a menu/menu item and
confirming your selection
XSelect a menu/menu item using the
=;9: buttons and press
the 9 button to confirm.124At a glanceCOMAND

Remote control
Overview
:To switch the screen on/off;To switch button lighting on/off=To select the screen for remote control
operation (COMAND, SPLITVIEW, L
REAR and REAR R can be selected)
?To select a menu or menu itemATo confirm a selection or settingBTo switch sound on/off (for corded
headphones)
CTo adjust the volume (for corded
headphones)
DTo skip, fast-forward/fast-rewindETo select a track, to enter directlyFTo leave the menu (back)Selecting the screen for the remote
control
You can use the remote control to operate
one of the two rear screens at a time. To do
so, you must switch the remote control to the
desired screen.
XTo select the left-hand screen: turn
thumbwheel = until "L REAR" is
highlighted in the window.
XTo select the right-hand screen: turn
thumbwheel = until "REAR R" is
highlighted in the window.
Switching the screen on/off
If the key in the ignition lock is in position 0
or 1 or if the key is not in the ignition lock, the
rear screens will switch off after 30 minutes.
Before the screens switch off, they show a
message to this effect.
You can switch the screens back on,
However, this will discharge the starter
battery.
XPoint the remote control at the rear-
compartment screen which has been
selected for remote operation.
XPress button : on the remote control.
The respective rear screen switches on or
off.
iYou can only switch the screens on using
the remote control if the ignition is
switched on.
Switching button lighting on/off
XPress button ; on the remote control.
Depending on the previous status, the
button lighting is switched on or off.
iIf you do not use the remote control for
about 15 seconds, the button lighting
switches off automatically.
Switching the sound on/off (corded
headphones only)
XPress button B on the remote control.
The sound is switched on/off.
138At a glanceCOMAND

Vehicle equipment
iThis manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
Exterior lighting
Important safety notes
For reasons of safety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime. In some
countries, operation of the headlamps varies
due to legal requirements and self-imposed
obligations.
Notes on driving abroad
Convert to symmetrical low beam when
driving abroad: switch the headlamps to
symmetrical low beam in countries in which
traffic drives on the opposite side of the road
from the country where the vehicle is
registered. This prevents oncoming traffic
from being dazzled. Symmetrical lights do not
illuminate as large an area of the edge of the
road.
Have the headlamps converted at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center, as close to the border
as possible before driving in these countries.
Convert to asymmetrical low beam after
returning: have the headlamps converted
back to asymmetrical low beam at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center, as soon as possible
after crossing the border when returning.
Light switch
Operation
1WLeft-hand standing lamps2XRight-hand standing lamps3$Lights off/daytime running lamps4cAutomatic headlamp mode/daytime
running lamps
5TSide lamps, license plate and
instrument lighting
6LLow-beam/high-beam headlamps7NFog lamps148RRear fog lamps
The turn signals, high-beam headlamps and
the high-beam flasher are operated using the
combination switch (Y page 274).
! Switch off the parking lamps and standing
lamps when you leave the vehicle. This
prevents the battery from discharging.
The exterior lighting (except the side lamps/
standing lamps) switches off automatically if
you:
Rremove the key from the ignition lock
Ropen the driver's door with the key in
position 0
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to $ or c.
or
XIf the rear fog lamp is switched on: press
the light switch in to the stop.14Only vehicles with Bi-Xenon headlamps without Intelligent Light System* are equipped with front fog lamps.272Exterior lightingLights and windshield wipers* optional

Switch the reading lamp off=Interior lighting
Interior lighting control
Important notes
In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position 2 in the
ignition lock.
Automatic interior lighting control
XTo switch on/off: press the | button.
The OFF indicator lamp shows whether the
automatic interior lighting control is
deactivated (indicator lamp on) or
activated (indicator lamp off).
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior light is activated for a short while
when the key is removed from the ignition
lock. You can activate this delayed switch-off
using COMAND ( Y page 259).
Manual interior lighting control
XTo switch the front interior lighting on/
off: press the c button.XTo switch the rear interior lighting on/
off: press the u button.XTo switch the reading lamps on/off:
press the p button.Changing bulbs
Important safety notes
Xenon bulbs
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
GWarning
Xenon bulbs carry a high voltage. You could
get an electric shock and be seriously or even
fatally injured if you touch the electric
contacts on Xenon bulbs. Therefore, never
remove the cover from Xenon bulbs.
Do not change Xenon bulbs yourself, but have
them replaced at a qualified specialist
workshop which has the necessary specialist
knowledge and tools to carry out the work
required.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbs
GWarning!
Bulbs and lamps can be very hot. You should
therefore allow them to cool down before you
change them. Otherwise, you could be burned
if you touch them.
Keep bulbs out of the reach of children.
Otherwise, they could damage the bulbs, for
example, and injure themselves.
278Changing bulbsLights and windshield wipers

This is the quickest way to cool the vehicle
interior when the sliding sunroof and the side
windows are closed.
Defrosting the windows
Windows fogged up on the inside
XActivate the "cooling with air
dehumidification" function via COMAND
( Y page 263).XActivate automatic mode Ã.XIf the windows continue to fog up, activate
the defrosting function ( Y page 292).
i
You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.XActivate automatic climate control.
i You should only select this setting until
the windshield is clear again.
Rear window defroster
Activating/deactivating
GWarning
Any accumulation of snow and ice should be
removed from the rear window before driving.
Visibility could otherwise be impaired,
endangering you and others.
The rear window heating has a high current
draw. You should therefore switch it off as
soon as the window is clear as it only switches
off automatically after several minutes.
If the battery voltage is too low, the rear
window heating may switch off.
XTurn the SmartKey to position 2 in the
ignition lock.XPress the ¤ rocker switch up or down.
The indicator lamp in the ¤ rocker
switch lights up or goes out.Problems with the rear window heating
The rear window heating has deactivated
itself prematurely or cannot be activated.
XSwitch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heating is activated again
automatically.
Activating/deactivating air-
recirculation mode
You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the
vehicle will then be recirculated.
GWarning
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press the ¬
button.
XTurn the SmartKey to position 2 in the
ignition lock.XTo activate: press the g rocker switch
up or down.
The indicator lamp in the g rocker
switch lights up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. The indicator lamp in the
g rocker switch is not lit when
automatic air-recirculation mode is
activated.
Outside air is added after about 30
minutes.
Operating the climate control systems293Climate controlZ

X To deactivate: press the g rocker
switch up or down.
The indicator lamp in the g rocker
switch goes out.
i Air-recirculation mode switches off
automatically:
R after approximately five minutes if
outside temperatures are under about
41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes if outside
temperatures are over about
41 ‡ (5 †)
Switching the residual heat on/off
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the "residual heat" function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.
XTurn the key to position 0 in the ignition
lock or remove it.XTo switch on: press the Ì rocker
switch up or down.
The indicator lamp in the Ì rocker
switch lights up.XTo switch off: press the Ì rocker
switch up or down.
The indicator lamp in the Ì rocker
switch goes out.i Residual heat is deactivated
automatically:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low
Setting the air vents
Important safety notes
GWarning
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet grille on the hood free of
blockages, such as ice, snow or leaves
R never cover the vents or air inlet and outlet
grilles in the vehicle interior.
i For virtually draft-free ventilation, adjust
the sliders of the air vents to the center
position.
294Setting the air ventsClimate control

gear when the engine is idling normally and
when your right foot is firmly on the brake
pedal.GWarning!
HYBRID vehicles: It is imperative that you read
the HYBRID Supplemental Operating
Instructions included in your vehicle literature
portfolio. You may otherwise not receive all
necessary safety information and warning for
the operation of your vehicle.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train.
! S 63 AMG: at low engine oil temperatures
below 68 ‡ (+20 † ), the maximum engine
speed is restricted in order to protect the
engine. To protect the engine and maintain
smooth engine operation, avoid driving at
full throttle when the engine is cold.
SmartKey positions
SmartKey
gTo remove the SmartKey1Power supply for some consumers, such
as the windshield wipers2Ignition (power supply for all consumers)
and drive position3To start the engine
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up. The indicator lamps of the high-beam
headlamps or the turn signal lamps only light
up if the high-beam headlamps or the turn
signal lamps are switched on. If an indicator
lamp does not light up when the ignition is
switched on, check it and replace it if
necessary. If an indicator lamp does not go
out after the engine is started or if it lights up
while the vehicle is in motion, see
( Y page 413).
XRemove the SmartKey when the engine is
switched off.
The battery may otherwise discharge.
If you cannot turn the SmartKey in the ignition
lock, the vehicle battery may not be charged
sufficiently.
XCheck the vehicle battery and charge if
necessary ( Y page 470).
or
XJump-start the vehicle ( Y page 471).
i
The SmartKey can be turned in the
ignition lock even if it is not the correct
SmartKey for the vehicle. The ignition is not
switched on. The engine cannot be started.
KEYLESS-GO
Vehicles with KEYLESS-GO are equipped with
a SmartKey with an integrated KEYLESS-GO
function and a detachable Start/Stop button.
The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
Driving299Driving and parkingZ