ECU MERCEDES-BENZ S-CLASS SEDAN 2012 User Guide

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 31).
SmartKey
Important safety notes
GWARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts.GWARNING
If a key ring is too heavy or too large, the
weight acting on the key could cause it to turn
in the ignition lock or catch on the steering
wheel. This could cause the engine to be
switched off suddenly. You may lose control
of the vehicle and cause an accident. Do not
attach any heavy or large key rings to the key
that is inserted in the ignition.
General notes
If you cannot lock or unlock the vehicle with
the SmartKey, either the battery in the
SmartKey is discharged, the SmartKey is
faulty or the starter battery is discharged.
XCheck the battery in the SmartKey and
replace it if necessary ( Y page 85).XUnlock the driver's door using the
mechanical key ( Y page 90).XLock the vehicle ( Y page 91).XHave the starter battery and the battery
contacts checked at a qualified specialist
workshop.
If the SmartKey is faulty, contact Roadside
Assistance or a qualified specialist workshop.
SmartKey functions
The SmartKey centrally locks/unlocks:
R the doors
R the trunk lid
R the fuel filler flap
82SmartKeyOpening/closing

ProblemPossible causes/consequences and M SolutionsYou have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.XIf necessary, have the locks changed as well.The engine cannot be
started using the
SmartKey.The on-board voltage is too low.XRemove the SmartKey and reinsert it into the ignition lock.XStart the engine within 30 seconds of inserting the SmartKey
into the ignition lock.XRepeat if necessary.
If the engine does not start after several attempts:
XCheck the starter battery and charge it if necessary
( Y page 480).
or
XJump-start the vehicle ( Y page 483).
or
XConsult a qualified specialist workshop.The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.A door is open. Therefore, the SmartKey cannot be detected as
easily.XClose the door and try to start the vehicle again.There is interference from a powerful source of radio waves.XStart your vehicle with the SmartKey in the ignition lock.Doors
Important safety notes
GWARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts.88DoorsOpening/closing

GWARNING
Do not carry heavy or hard objects in the
passenger compartment unless they are
firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of:
R strong braking maneuvers
R sudden changes of direction
R an accident
Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
are not secured by the child-proof locks
( Y page 71).
Only open the door when the traffic situation
permits.
If the vehicle was previously locked with the
SmartKey or with KEYLESS-GO, opening the
vehicle from the inside will activate the anti-
theft alarm system. Switch off the alarm
( Y page 79).
XPull door handle ;.
If the door is locked, locking knob : pops
up. The door is unlocked and can be
opened.Centrally locking and unlocking the
vehicle from the inside
You can centrally lock or unlock the vehicle
from the inside.
The central locking/unlocking button does
not lock or unlock the fuel filler flap.
i You cannot unlock the vehicle centrally
from the inside if the vehicle has been
locked with the SmartKey or KEYLESS-GO.XTo unlock: press button :.XTo lock: press button ;.
If the front-passenger door is closed, the
vehicle locks.
You can open a front door from inside the
vehicle even if it has been locked. Only open
the door when the traffic situation permits.
If the vehicle has been locked with the central
locking button:
R and the SmartKey is set to its factory
setting, the entire vehicle is unlocked if a
front door is opened from the inside
R and the SmartKey is set to an individual
setting, only the front door that is opened
from inside the vehicle is unlocked.
If the vehicle has been locked centrally with
the SmartKey or with KEYLESS-GO, it is not
unlocked when the release button for the
central locking is used.
Automatic locking feature
When the ignition is switched on and the
wheels of the vehicle are turning at a speed
Doors89Opening/closingZ

Locking the vehicle
If the vehicle can no longer be locked with the
SmartKey, you can lock it by taking the
following steps. If the central locking in the
vehicle is malfunctioning, you cannot lock the
trunk.XPress down the locking knobs on the open
rear doors.XClose the rear doors.XOpen the front-passenger door.XClose the driver's door and the trunk lid.XPress down the locking knob of the driver's
door inside the vehicle.XPress down the locking knob of the open
front-passenger door.
i Make sure that you have the SmartKey on
your person and that it has not been left in
the vehicle.
XClose the front-passenger door.XMake sure that the doors and the trunk are
locked.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed.
Trunk
Important safety notes
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
GWARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in a child
restraint system, and do not give them access
to an unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in
operation even after the SmartKey has
been removed from the ignition, such as the
seat adjustment, steering wheel
adjustment or memory function.
If children open a door, they could cause
severe or even fatal injury to other persons; if
they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and a child could be burned on these
parts.
GWARNING
Do not carry heavy or hard objects in the
passenger compartment or trunk unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident
GWARNING
Make sure the trunk lid is closed when the
engine is running and while driving. Among
other dangers, deadly carbon monoxide (CO)
Trunk91Opening/closingZ

Seats
Important safety notes
GWARNING
In order to avoid possible loss of vehicle
control, all seat, head restraint, steering
wheel and rear view mirror adjustments, as
well as fastening of seat belts, must be done
before setting the vehicle in motion.
GWARNING
Do not adjust the driver's seat while driving.
Adjusting the seat while driving could cause
the driver to lose control of the vehicle.
Never travel in a moving vehicle with the seat
backrest in an excessively reclined position as
this can be dangerous. You could slide under
the seat belt in a collision. If you slide under
it, the seat belt would apply force at the
abdomen or neck. This could cause serious or
fatal injuries. The seat backrest and seat belts
provide the best restraint when the wearer is
in a position that is as upright as possible and
seat belts are properly positioned on the
body.
GWARNING
Your seat belt must be adjusted so that you
can correctly fasten your seat belt.
Observe the following points:
R adjust the seat backrest until your arms are
slightly angled when holding the steering
wheel.
R adjust the seat to a comfortable seating
position that still allows you to reach the
accelerator/brake pedal safely. The
position should be as far back as possible
with the driver still able to operate the
controls properly.
R adjust the head restraint so that it is as
close to the head as possible and the center
of the head restraint supports the back of
the head at eye level.
R never place hands under the seat or near
any moving parts while a seat is being
adjusted.
Failure to do so could result in an accident
and/or serious personal injury.GWARNING
The electrically adjustable seats 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.
GWARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint.
GWARNING
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as close
to the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of an
accident or similar situation.
Seats107Seats, steering wheel and mirrorsZ

Cleaning instructions
! Do not touch the COMAND display. The
display has a very sensitive high-gloss
surface; there is a risk of scratching. If you
have to clean the screen, however, use a
mild cleaning agent and a soft, lint-free
cloth.
The display must be switched off and have
cooled down before you start cleaning. Clean
the display screen, when necessary, with a
commercially available microfiber cloth and
cleaning agent for TFT/LCD displays. Then,
dry the surface with a dry microfiber cloth.
Avoid using alcoholic thinners, gasoline or
abrasive cleaning agents. These could
damage the display surface. Do not apply
pressure to the display surface when cleaning
it, as this could cause irreversible damage.
Remote control
Overview
You can use the remote control to operate the
COMAND display, SPLITVIEW and either one
of the rear-compartment screens.
:To switch the screen on/off (Rear Seat
Entertainment System only);To switch the 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 settingBMuteCTo adjust the volume (for corded
headphones only)DCOMAND: to set the station, skip track,
fast forward/rewind, for example. Rear
Seat Entertainment System: skip track,
fast forward/rewindECOMAND: to select a station from
presets, select a track, enter directly,
enter a phone number, for example. Rear
Seat Entertainment System: to select a
track, enter directlyFTo exit a menu (back)XPoint the remote control at the
corresponding screen and execute the
functions by pressing the corresponding
buttons.
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 SmartKey is in the ignition lock in
position 0 or 1 or if the SmartKey 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.
At a glance129COMANDZ

Functions with the E and F button
You can use the remote control to execute the same functions as the COMAND control panel.
ModeFunctionAudio modeSelects a station using the station search function ( Y page 216)Selects a track by skipping to a track ( Y page 229)Fast forward/rewind ( Y page 230)Video modeSelects a scene or chapter (video DVD mode) ( Y page 247)Fast-forward/rewind (video DVD mode) ( Y page 247)
Functions of the number keypad
You can use the remote control to execute the same functions as the COMAND control panel.
ModeFunctionAudio modeSelects stations via the station presets ( Y page 216)Sets stations by entering the frequency manually ( Y page 217)Stores stations manually ( Y page 217)Selects a track ( Y page 229)Selects a data medium via the media list ( Y page 228)Telephone modeTelephone number entry ( Y page 204)Character entryEnters characters (direct entry) ( Y page 134)Operating COMAND
Selecting a main function
Initial situation
You would like to change from the telephone
menu to the vehicle settings, for example.
XSlide ZV the COMAND controller and
switch to the main function bar.XSelect Vehicle in the main function bar by
turning cVd the COMAND controller and
press W to confirm.
The "Vehicle" menu appears.:"Vehicle" menu;Display/selection windowAt a glance131COMANDZ

XTo confirm an entry in COMAND: select
¬ using the COMAND controller and
press W to confirm.
or
XSelect SEND on the telephone keypad.XEnter the same passcode into the
Bluetooth ®
device (see the operating
instructions for the respective device).
The device is authorized.
External authorization
If COMAND does not detect your
Bluetooth ®
device, this may be due to
particular security settings on your
Bluetooth ®
device. In this case, you can test
if your Bluetooth ®
device can find COMAND.
The Bluetooth ®
device name of COMAND is
"MB Bluetooth".
XSelect Update .XSelect Options by sliding VY the
COMAND controller and press W to
confirm.XSelect External Authorization and
press W to confirm.XStart the Bluetooth ®
scan process on the
Bluetooth ®
device (see separate operating
instructions of the respective device).XSelect COMAND ("MB Bluetooth").
i The order in which the passkey is entered
depends on the mobile phone.
XEnter the passkey on the Bluetooth ®
device
when prompted.XConfirm the Do you want to authorize
XX? question in COMAND with Yes.XEnter the passkey in COMAND.
Displaying the details of a Bluetooth ®
device
XIn the Bluetooth ®
device list, select the
desired device by turning cVd the
COMAND controller.XSelect Options by sliding VY the
COMAND controller and press W to
confirm.XSelect Details and press W to confirm.
The detailed display for this device
appears.XTo close the detailed view: turn cVd or
slide XVY the COMAND controller.
De-authorizing (de-registering) a
Bluetooth ®
device
Mercedes-Benz USA, LLC recommends de-
authorization in both COMAND and the
Bluetooth ®
device, e.g. the mobile phone.
Subsequent authorization may otherwise fail.
XIn the Bluetooth ®
device list, select the
authorized device by turning cVd the
COMAND controller.XSelect Options by sliding VY the
COMAND controller and press W to
confirm.XSelect De-authorize and press W to
confirm.
A prompt appears asking whether you
really wish to de-authorize this device.XSelect Yes or No and press W to confirm.
If you select Yes, the authorization for the
device will be revoked.
If you select No, the process will be aborted.
i
If a Bluetooth ®
device has been de-
authorized and is out of range, when a new
search is carried out it will not appear in the
Bluetooth ®
device list.
System language settings
This function allows you to determine the
language for the menu displays and the
navigation messages. The selected language
affects the characters available for entry.
When you set the system language, the
language of the Voice Control System will
System settings153COMANDZ

Example display: change-of-direction phase
:Current vehicle position: the tip of the
triangle indicates the vehicle’s direction
of travel;Graphic representation of the distance to
the next change of direction=Distance to the next change of direction
Once the change of direction is completed,
COMAND automatically switches back to full-
screen display.
Lane recommendations
Overview
On multilane roads, COMAND can display
lane recommendations for the next change of
direction. The corresponding data must be
available in the digital map.
COMAND displays lane recommendations
B , based on the next two changes of
direction. The number of lanes applies to the
point at which the next change of direction is
required.
Example display
:Point of the next change in direction (light
blue circle);Point of the change of direction after next=Next change of direction (in this case, turn
off to the right)?Graphic representation of the distance to
the next change of directionADistance to the next change of directionBPossible lane (light blue)CRecommended lane (dark blue)DLane not recommended (gray)ECurrent vehicle position: the tip of the
triangle indicates the vehicle’s direction
of travel
i The multifunction display also shows lane
recommendations. Only the recommended
lanes are displayed here. ( Y page 379).
172NavigationCOMAND

If you want to reauthorize a mobile phone
following de-authorization, you can select a
different passcode.XTo enter a passcode in COMAND: press
the number keys in sequence.
¬ is available for selection after the first
number has been entered.
or
XSelect the digits one by one by turning
cVd the COMAND controller and press
W to confirm.XTo confirm an entry in COMAND: select
¬ using the COMAND controller and
press W to confirm.
or
XSelect SEND on the telephone keypad.XNow enter the same passcode in the mobile
phone.
To make entries on the mobile phone: if
the Bluetooth ®
connection is successful, you
will be requested to enter the passcode (see
mobile phone operating instructions).
XEnter the same passcode on the mobile
phone that you entered in COMAND.
i After entering the passcode, you may also
need to enter a confirmation in your mobile
phone to connect calls. Please check your
mobile phone display.
If the Error during authorization
process message appears on the
COMAND display, you may have exceeded
the allowed time. Repeat the procedure.
The mobile phone is connected to COMAND
(authorized). You can now make phone calls
using the COMAND hands-free system.
External authorization
If COMAND does not detect your mobile
phone, this may be due to particular security
settings on your mobile phone. In this case,
you can test if your mobile phone can find
COMAND. The Bluetooth ®
device name of
COMAND is MB Bluetooth .
Observe the following: some mobile phones
require that you reconnect to COMAND after
you have entered the passcode (see the
mobile phone operating instructions). The
mobile phone cannot otherwise be
authorized.XPress the S function button on the
COMAND controller once or twice.XSelect Data/Connections in the
telephone basic menu by sliding VÆ and
turning cVd the COMAND controller and
press W to confirm.XSelect Bluetooth Telephones and press
W to confirm.XSelect Update .XSelect Options by sliding VY and press
W to confirm.XSelect External Authorization and
press W to confirm.XStart the Bluetooth ®
search on the mobile
phone (see the mobile phone operating
instructions).XSelect COMAND ( MB Bluetooth) on the
mobile phone.
i The order in which the passkey is entered
depends on the mobile phone.
XEnter the passkey on the mobile phone
when prompted.XConfirm the Do you want to authorize
XX? question in COMAND with Yes.XEnter the passkey in COMAND.
Connecting another mobile phone
If you have authorized more than one mobile
phone, you can switch between the individual
phones.
i You can only switch to another authorized
phone if you are not currently making a call.
XSelect the mobile phone in the Bluetooth ®
telephones list by turning cVd theTelephone201COMANDZ