child restraint MERCEDES-BENZ S-Class 2012 W221 Owner's Manual

Carsee Vehicle
Care
Carpets .......................................... 469
Car wash ........................................ 463
Display ........................................... 467
Exterior lights ................................ 466
Gear or selector lever ....................468
Matte finish ................................... 465
Night View Assist Plus ...................467
Notes ............................................. 463
Paint .............................................. 465
Plastic trim .................................... 468
Power washer ................................ 464
Rear view camera .......................... 467
Roof lining ...................................... 469
Seat belt ........................................ 469
Seat cover ..................................... 469
Sensors ......................................... 467
Steering wheel ............................... 468
Tail pipes ....................................... 467
Trim pieces .................................... 468
Washing by hand ........................... 464
Wheels ........................................... 465
Windows ........................................ 466
Wiper blades .................................. 466
Wooden trim .................................. 468
Cargo tie down rings ......................... 435
Car pool lanes .................................... 169
Car wash (care) ................................. 463
Category Satellite radio ................................ 218
CD
Copy protection ............................. 229
Fast forward/fast rewind ...............225
General information .......................229
Inserting ........................................ 220
Inserting/loading (Rear Seat
Entertainment System) ..................251
Mode, switching to ........................221
Multisession .................................. 228
Notes on discs ............................... 229
Operating the player/changer
(on-board computer) ......................379
Pause function ............................... 223
Playback options ........................... 228
Player/changer operation
(COMAND) ..................................... 220Removing/ejecting (Rear Seat
Entertainment System) ..................251
Safety notes .................................. 220
Selecting a media type ..................224
Selecting a track ............................ 224
Sound settings (balance, bass,
fader, treble) .................................. 135
Cell phone
see Mobile phone
Center console ..................................... 38
Central locking Automatic locking feature
(COMAND) ..................................... 264
Locking/unlocking (SmartKey) ........78
Changing batteries (remote
control, headphones) ........................ 247
Changing bulbs High-beam headlamps (vehicles
with halogen daytime running
lamps) ............................................ 284
High-beam headlamps (vehicles
with LED daylight lamps) ...............284
Important safety notes ..................282
Overview of bulb types ..................283
Changing direction
Announcement phase ....................166
Change of direction phase .............167
Preparation phase .........................166
Character bar ..................................... 129
Characters Entering ......................................... 130
Entering (address book, phone
book) ............................................. 132
Entering (navigation) ......................129
Child-proof locks
Important safety notes ....................66
Rear doors ....................................... 67
Children
In the vehicle ................................... 62
Restraint systems ............................ 62
Child seat
LATCH-type (ISOFIX) child seat
anchors ............................................ 65
Special seat belt retractor ...............64
Top Tether ....................................... 65
Cigarette lighter ................................ 440Index7

Selecting your home address ........159
Setting route options (avoiding:
highways, toll roads, tunnels,
ferries) ........................................... 152
Setting the route type (short
route, fast route, dynamic route or
economic route) ............................ 152
Showing/hiding the menu .............152
Starting route calculation ..............156
Switching announcements on/off . 170
Switching to ................................... 151
Traffic report .................................. 174
Troubleshooting ............................. 192
NECK-PRO head restraints
Operation ......................................... 55
Resetting after being triggered ........56
NECK-PRO luxury head restraints
Operation ......................................... 55
Resetting after being triggered ........56
Night View Assist Plus
Activating/deactivating .................357
Cleaning ......................................... 467
Display message ............................ 408
Function/notes ............................. 357
Problem (malfunction) ...................360
North orientation (navigation) ......... 184
Notes on breaking-in a new
vehicle ................................................ 302
Number keypad ................................. 129
O
Occupant Classification System
(OCS) Faults ............................................... 54
Operation ......................................... 50
System self-test ............................... 53
Occupant safety
Children in the vehicle .....................62
System overview .............................. 44
Octane number (fuel) ........................ 525
Odometer ........................................... 376
see Trip odometer
Off-road .............................................. 173
Oil see Engine oil
On-board computer
AMG menu ..................................... 379
Assistance menu ........................... 383
Audio menu ................................... 378
Displaying a service message ........462
Display messages ..........................388
DISTRONIC PLUS ........................... 339
Important safety notes ..................372
Menu overview .............................. 375
Message memory .......................... 388
Navigation menu ............................ 377
Operating video DVD .....................379
Operation ....................................... 373
RACETIMER ................................... 380
Service menu ................................. 385
Settings menu ............................... 385
Standard display ............................ 376
Telephone menu ............................ 382
Trip menu ...................................... 376
Opening height restriction for
trunk lid .............................................. 265
Operating system see On-board computer
Outside lighting
Delayed switch-off (COMAND) .......263
Outside temperature display ........... 373
Overhead control panel ...................... 39
Override feature Rear side windows ...........................67
Own address (navigation)
see Home address
P
Paint code number ............................ 521
Paintwork (cleaning instructions) ... 465
Panic alarm .......................................... 68
Panorama roof with power tilt/
sliding panel Opening/closing .............................. 97
Problem (malfunction) ...................100
Resetting ......................................... 99
Panorama sliding sunroof
Important safety notes ....................95
Parcel net ........................................... 435
Parking ............................................... 323
Important safety notes ..................323
Index17

Roof load (maximum) ........................ 530
Route see Route guidance (navigation)
Route (navigation)
Displaying the distance to the
destination ..................................... 172
Route overview .............................. 172
Selecting an alternative route ........171
Setting route options (avoiding:
highways, toll roads, tunnels,
ferries) ........................................... 152
Setting the route type (short
route, fast route, dynamic route or
economic route) ............................ 152
Starting calculation ........................156
Route guidance
Canceling ....................................... 169
Continuing ..................................... 169
Destination reached ......................170
Lane recommendations .................167
Off-road ......................................... 173
Traffic reports ................................ 174
Route guidance (navigation) ............ 377
Route guidance (on-board
computer) .......................................... 377
Route information see Dynamic route guidance/TMC
S
Safety Children in the vehicle .....................62
Child restraint systems ....................62
Occupant Classification System
(OCS) ............................................... 50
Overview of occupant safety
systems ........................................... 44
Safety notes
Audio CD/DVD and MP3 mode .....220
Operating safety ............................ 116
Video DVD mode ........................... 240
Safety systems
see Driving safety systems
SatRadio ............................................. 216
Displaying information ...................220
Registering .................................... 217
Selecting a category ......................218
Screen
Selecting for remote control (Rear
Seat Entertainment System) ..........140
Switching on/off (Rear Seat
Entertainment System) ..................126
see Display
SD memory card
Loading .......................................... 221
Seat belts
Adjusting the driver's and front-
passenger seat belt .........................60
Adjusting the height ......................... 60
Automatic comfort-fit feature ..........62
Belt force limiters ............................ 61
Cleaning ......................................... 469
Correct usage .................................. 58
Emergency Tensioning Devices ........ 61
Fastening ......................................... 59
Important safety guidelines .............57
Releasing ......................................... 60
Safety guidelines ............................. 45
Special seat belt retractor ...............64
Switching belt adjustment on/off
(on-board computer) ......................386
Warning lamp ................................. 420
Warning lamp (function) ................... 61
Seats
Active multicontour seat ........ 108, 272
Adjusting (electrically) ...................104
Adjusting (rear compartment) ........104
Adjusting lumbar support ..............108
Adjusting the head restraint ..........106
Cleaning the cover .........................469
Correct driver's seat position ........102
Important safety notes ..................103
Multicontour seat .......................... 108
Seat heating problem ....................109
Seat ventilation problem ................109
Selecting (COMAND) .....................270
Storing settings (memory
function) ........................................ 113
Switching seat heating on/off .......108
Switching seat ventilation on/off ..109
Selecting stations (radio)
Using station presets .....................212
Using station search ......................212
Sending DTMF tones ......................... 203
Sensors (cleaning instructions) ....... 46720Index

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).
Occupant safety
Overview of occupant safety
In this section, you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
R seat belts
R child restraint systems
R LATCH-type (ISOFIX) child seat anchors
Additional protection is provided by:
R SRS (Supplemental Restraint System)
R NECK-PRO head restraints/NECK-PRO
luxury head restraints
R PRE-SAFE ®
R Air bag system components with:
- PASSENGER AIR BAG OFF indicator lamp
- front-passenger seat with Occupant
Classification System (OCS)
The different air bag systems work
independently of each other. The protective
functions of the system work in conjunction
with each other. Not all air bags are deployed
in an accident.
GWARNING
Modifications to or work improperly
conducted on restraint system components
or their wiring, as well as tampering with
interconnected electronic systems, can lead
to the restraint systems no longer functioning
as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy
inadvertently or fail to deploy in accidents
although the deceleration threshold for air
bag deployment is exceeded. Therefore,
never modify the restraint systems. Do not
tamper with electronic components or their
software.
i See "Children in the vehicle"
( Y page 62) for more information on
infants and children traveling with you in
the vehicle and restraints for infants and
children.
SRS (Supplemental Restraint System)
Introduction
SRS consists of:
R the 6 SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R Emergency Tensioning Devices
R belt force limiters
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS warning lamp
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
44Occupant safetySafety

RDo not lean your head or chest close to the
steering wheel or dashboard.
R Only hold the steering wheel by the rim.
Placing hands and arms inside the rim can
increase the risk and potential severity of
hand/arm injury when the driver front air
bag inflates.
R Adjust the front-passenger seat as far back
as possible from the dashboard when the
seat is occupied.
R Occupants, especially children, should
never place their bodies or lean their heads
in the area of the door where the side
impact air bag inflates. This could result in
serious injuries or death should the side
impact air bag be deployed. Always sit as
upright as possible, wear the seat belt
properly and use an appropriately sized
child restraint, infant restraint or booster
seat recommended for the size and weight
of the child.
Failure to follow these instructions can result
in severe injuries to you or other occupants.
If you sell your vehicle, it is important that you
make the buyer aware of this safety
information. Be sure to give the buyer this
Operator's Manual.GWARNING
Accident research shows that the safest place
for children in an automobile is in a rear seat.
There is a possibility for a side impact air bag-
related injury if occupants, especially
children, are not properly seated or restrained
when next to a side impact air bag which
needs to deploy rapidly in a side impact in
order to do its job.
To help avoid the possibility of injury, please
follow these guidelines:
(1)Occupants, especially children,
should never place their bodies or
lean their heads in the area of the
door where the side impact air bag
inflates. This could result in
serious injuries or death shouldthe side impact air bag be
deployed.(2)Always sit as upright as possible,
wear the seat belt properly and use
an appropriately sized infant
restraint, toddler restraint, or
booster seat recommended for the
size and weight of the child. and
for children 12 years old and
under, use an appropriately sized
infant restraint, toddler restraint,
or booster seat recommended for
the size and weight of the child.(3)Always wear seat belts properly.
If you believe that, even with the use of these
guidelines, it would be safer for your rear seat
occupants to have the rear mounted side
impact air bags deactivated, then
deactivation can be carried out upon your
written request at an authorized Mercedes-
Benz Center at an additional cost.
Please contact an authorized Mercedes-Benz
Center or call the Customer Assistance
Center (in the USA) at 1-800-FOR-MERCedes
(1-800-367-6372), or Customer Service (in
Canada) at 1-800-387-0100 for details.
The air bags are only deployed if the air bag
control unit detects the need for deployment.
Only in the event of such a situation will they
provide their supplemental protection.
The driver and passenger should always wear
their seat belts. Otherwise, it is not possible
for the air bags to provide their supplemental
protection.
In the event of other types of impacts and
impacts below air bag deployment
thresholds, the air bags will not deploy. The
driver and passengers will then be protected
to the extent possible by a properly fastened
seat belt. A properly fastened seat belt is also
needed to provide the best possible
protection in a rollover.
Air bags provide additional protection; they
are not, however, a substitute for seat belts.
All vehicle occupants must fasten their seat
Occupant safety47SafetyZ

Rregardless of whether the front-passenger
seat is occupied
R independently of seat belt use
R if the vehicle overturns and the system
determines that window curtain air bag
deployment can offer additional protection
to that provided by the seat belt
R independently of the front air bags
Window curtain air bags : will not deploy in
impacts with deceleration rates which do not
exceed the system's preset deployment
thresholds for vehicle deceleration or
acceleration. You will then be protected by
the fastened seat belt.
Occupant Classification System
(OCS)
How the occupant classification
system works
The Occupant Classification System (OCS)
categorizes the occupant on the front-
passenger seat by means of a weight sensor.
The front-passenger front air bag is
deactivated automatically for certain weight
categories. The 42 indicator
lamp shows you the current status. If the
42 indicator lamp is illuminated,
the front-passenger front air bag is
deactivated.
The system does not deactivate:
R the side impact air bag
R the window curtain air bag
R the Emergency Tensioning Devices
To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in a position that is as upright as possible
with their back against the seat backrest
R with their feet on the floor
If the front-passenger's weight is transferred
to another object in the vehicle (e.g. by
leaning on armrests), OCS may not be able to
approximate the occupant's weight category.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at an
authorized Mercedes-Benz Center.
For safety reasons, Mercedes-Benz
recommends that you only use seat
accessories which have been approved by
Mercedes-Benz.
Both the driver and the passenger should
always use the 42 indicator
lamp as an indication of whether or not the
passenger is properly positioned.GWARNING
If the 42 indicator lamp lights up
when an adult or someone larger than a small
individual is in the front-passenger seat, have
the front passenger reposition himself or
herself in the seat until the 42
indicator lamp goes out.
In the event of a collision, the air bag control
unit will not allow front-passenger front air
bag deployment when the OCS has classified
the front-passenger seat occupant as
weighing as much as or less than a typical 12-
month-old child in a standard child restraint
or if the front-passenger seat is classified as
being empty.
When the OCS senses that the front-
passenger seat occupant is classified as
being up to or less than the weight of a typical
12-month-old child in a standard child
restraint, the 42 indicator lamp
will illuminate when the engine is started and
remain illuminated, indicating that the front-
passenger front air bag is deactivated.
When the OCS senses that the front-
passenger seat is classified as being empty,
the 42 indicator lamp will
illuminate when the engine is started and
remain illuminated, indicating that the front-
passenger front air bag is deactivated.
When the OCS senses that the front-
passenger seat occupant is classified as
being heavier than the weight of a typical 12-
month-old child seated in a standard child
50Occupant safetySafety

restraint or as being a small individual (such
as a young teenager or a small adult), the
42 indicator lamp will illuminate
for approximately 6 seconds when the engine
is started and then, depending on occupant
weight sensor readings from the front-
passenger seat, remain illuminated or go out.
With the 42 indicator lamp
illuminated, the front-passenger front air bag
is deactivated. With the 42
indicator lamp out, the front-passenger front
air bag is activated.
When the OCS senses that the front-
passenger seat occupant is classified as an
adult or someone larger than a small
individual, the 42 indicator lamp
will illuminate for approximately 6 seconds
when the engine is started and then go out,
indicating that the front-passenger front air
bag is activated.
If the 42 indicator lamp is
illuminated, the front-passenger front air bag
is deactivated and will not be deployed.
If the 42 indicator lamp is not
illuminated, the front-passenger front air bag
is activated and will be deployed:
R in the event of certain frontal impacts
R if impact exceeds a preset deployment
threshold
R independently of the side impact air bags
If the front-passenger front air bag is
deployed, the rate of inflation will be
influenced by:
R the rate of vehicle deceleration as assessed
by the air bag control unit
R the front passenger's weight category as
identified by OCS
For further information, see "Air bag display
messages" ( Y page 399).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 seats 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.
The infant or child restraint system must be
properly secured with the vehicle's seat belt,
the seat belt and Top Tether strap, or lower
anchors and Top Tether strap, fully in
accordance with the child seat
manufacturer's instructions.
Occupants, especially children, should always
sit as upright as possible, wear the seat belt
properly and use an appropriate sized infant
restraint, toddler restraint, or booster seat
recommended for the size and weight of the
child.
Children can be killed or seriously injured by
an inflating air bag. Note the following
important information when circumstances
require you to place a child in the front-
passenger seat:
R Your vehicle is equipped with air bag
technology designed to deactivate the
front-passenger front air bag in your vehicle
when the system senses the weight of a
typical 12-month-old child or less along
with the weight of a standard appropriate
child restraint on the front-passenger seat.
R A child in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates in a collision which
could occur under some circumstances,
even with the air bag technology installed
in your vehicle. The only means to eliminate
this risk completely is never to place a child
in a rear-facing child restraint in the front-
passenger seat. We therefore strongly
recommend that you always place a child
in a rear-facing child restraint on the rear
seat.
R If you install a rear-facing child restraint on
the front-passenger seat, make sure theOccupant safety51SafetyZ

42 indicator lamp is
illuminated, indicating that the front-
passenger front air bag is deactivated.
Should the 42 indicator lamp
not illuminate or go out while the restraint
is installed, please check installation.
Periodically check the 42
indicator lamp while driving to make sure
the 42 indicator lamp is
illuminated. If the 42 indicator
lamp goes out or remains out, do not
transport a child on the front-passenger
seat until the system has been repaired.
A child in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates.
R If you place a child in a forward-facing child
restraint on the front-passenger seat:
- move the seat as far back as possible
- use the proper child restraint
recommended for the age, size and
weight of the child
- secure child restraint with the vehicle's
seat belt according to the child seat
manufacturer's instructions
R For children larger than a typical 12-month-
old child, the front-passenger front air bag
can be activated or deactivated.
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag
also has to deploy.
The OCS may have detected that the seat:
R was empty or occupied by a person with a
weight of up to or less than that of a typical
12-month-old child seated in a standard
child restraint
R was occupied by a small individual, such as
a young teenager or a small adult
R was occupied by a child in a child restraint
system, whose weight is greater than that
of a typical 12-month-old child.
These are examples of when the OCS
deactivates the front-passenger front air bag.Deactivation takes place although the
collision fulfills the criteria for deploying the
driver's air bag.
If the SmartKey has been removed from the
ignition lock or is in position 0, indicator lamp
42 : does not light up.
GWARNING
If the red SRS 6 indicator lamp in the
instrument cluster and the 42
indicator lamp are lit at the same time, there
is a malfunction in the OCS. The front
passenger front air bag will be deactivated in
this case. Have the system checked by
qualified technicians as soon as possible.
Contact an authorized Mercedes-Benz
Center.
Only have the seat repaired or replaced at an
authorized Mercedes-Benz Center.
In order to ensure proper operation of the air
bag system and OCS:
R Sit with the seat belt properly fastened in a
position that is as upright as possible with
your back against the seat backrest.
R When seated, a passenger should not
position him/herself in such a way as to
cause the passenger's weight to be lifted
from the seat cushion as this may result in
the OCS being unable to correctly
approximate the passenger's weight
category.
R Read and observe all warnings in this
chapter.
52Occupant safetySafety

System self-test
The 42 indicator lamp
illuminates when you:
R turn the SmartKey to position 1 or 2 in the
ignition lock
R press the KEYLESS-GO Start/Stop button
once or twice
If an adult occupant is properly sitting on the
passenger seat and the OCS classifies the
occupant as an adult, the 42
indicator lamp illuminates and goes out again
after approximately 6 seconds.
If the seat is not occupied and the OCS
classifies the front passenger seat as being
unoccupied, the 42 indicator
lamp will illuminate and not go out.
GWARNING
If the 4 2 indicator lamp does
not illuminate, the system is not functioning.
You must contact an authorized Mercedes-
Benz Center before seating any child on the
front passenger seat.
For more information, see "Problems with the
Occupant Classification System"
( Y page 54).
GWARNING
Never place anything between seat cushion
and child seat (e.g. a pillow), since it reduces
the effectiveness of the OCS. The underside
and rear side child restraint system must be
placed entirely on the seat cushion and the
backrest of the front-passenger seat
backrest.
If necessary, adjust the tilt of the passenger
seat backrest.
An incorrectly mounted child seat could cause
injuries to the child in case of an accident,
instead of increasing protection for the child.
Follow the manufacturer's instructions for
installation of child restraint systems.
Occupant safety53SafetyZ

Problems with the occupant classification systemProblemPossible causes/consequences and M SolutionsThe 42
indicator lamp
illuminates and
remains illuminated.
The person on the
front-passenger seat:
R has the weight of a
typical adult
R has been determined
by the system not to
be a child.The OCS is malfunctioning.XHave the OCS checked as soon as possible at an authorized
Mercedes-Benz Center.XObserve the additional display messages in the multifunction
display ( Y page 399).GWARNING
If the 42 indicator lamp illuminates and remains illuminated when the weight of a
typical adult or someone larger than a small individual has been detected on the passenger seat,
the system then determines the occupant cannot be a child. Do not allow any occupant to use
the passenger seat until the system has been repaired.
ProblemPossible causes/consequences and M SolutionsThe 42
indicator lamp does not
illuminate and/or does
not remain illuminated.
The front-passenger
seat is:
R unoccupied
R occupied with a
weight up to or less
than a typical 12-
month-old child in a
standard child
restraint systemThe OCS is malfunctioning.XMake sure there is nothing between the seat cushion and the
child seat.XCheck the installation of the child restraint system.XMake sure that no objects are applying additional weight onto
the seat.XIf the 42 indicator lamp does not illuminate, have
the OCS checked as soon as possible at an authorized
Mercedes-Benz Center. Do not transport a child on the front-
passenger seat as long as the OCS is not functioning.XObserve the additional display messages in the multifunction
display ( Y page 399).GWARNING
If the 42 indicator lamp does not illuminate or remains out with the weight of a
typical 12-month-old child in a standard child restraint or less, or is unoccupied, on the front-
passenger seat, do not transport a child on the front-passenger seat until the system has been
repaired.
54Occupant safetySafety