child lock MERCEDES-BENZ S-CLASS SEDAN 2012 Owners Manual

CareCarpets .......................................... 472
Car wash ........................................ 466
Display ........................................... 470
Exterior lights ................................ 469
Gear or selector lever ....................472
Interior ........................................... 470
Matte finish ................................... 468
Night View Assist Plus ...................471
Notes ............................................. 466
Paint .............................................. 468
Plastic trim .................................... 471
Power washer ................................ 467
Rear view camera .......................... 470
Roof lining ...................................... 472
Seat belt ........................................ 472
Seat cover ..................................... 472
Sensors ......................................... 470
Steering wheel ............................... 472
Tail pipes ....................................... 470
Trim pieces .................................... 472
Washing by hand ........................... 467
Wheels ........................................... 468
Windows ........................................ 469
Wiper blades .................................. 469
Wooden trim .................................. 472
Cargo tie down rings ......................... 437
Car pool lanes .................................... 173
Car wash (care) ................................. 466
Category Satellite radio ................................ 222
CD
Copy protection ............................. 234
Fast forward/fast rewind ...............230
General information .......................234
Inserting ........................................ 225
Inserting/loading (Rear Seat
Entertainment System) ..................255
Mode, switching to ........................226
Multisession .................................. 233
Notes on discs ............................... 234
Operating the player/changer
(on-board computer) ......................381
Pause function ............................... 227
Playback options ........................... 232
Player/changer operation
(COMAND) ..................................... 225Removing/ejecting (Rear Seat
Entertainment System) ..................256
Safety notes .................................. 225
Selecting a media type ..................228
Selecting a track ............................ 229
Sound settings (balance, bass,
fader, treble) .................................. 139
Center console ..................................... 41
Central locking Automatic locking feature
(COMAND) ..................................... 269
Locking/unlocking (SmartKey) ........82
Changing batteries (remote
control, headphones) ........................ 251
Changing bulbs High-beam headlamps (vehicles
with halogen daytime running
lamps) ............................................ 288
High-beam headlamps (vehicles
with LED daylight lamps) ...............288
Important safety notes ..................286
Overview of bulb types ..................287
Changing direction
Announcement phase ....................171
Change of direction phase .............171
Preparation phase .........................171
Character bar ..................................... 133
Characters Entering ......................................... 134
Entering (address book, phone
book) ............................................. 136
Entering (navigation) ......................133
Child-proof locks
Important safety notes ....................70
Rear doors ....................................... 71
Children
In the vehicle ................................... 66
Restraint systems ............................ 66
Child seat
LATCH-type (ISOFIX) child seat
anchors ............................................ 68
Special seat belt retractor ...............68
Top Tether ....................................... 69
Cigarette lighter ................................ 442
Cleaning Mirror turn signal ........................... 470Index7

Manual control ............................... 286
Overview ........................................ 285
Reading lamp ................................. 285
Intermediate stop
Deleting ......................................... 166
Entering ......................................... 165
iPod ®
Alphabetical track selection ..........242
Connecting to the Media
Interface ........................................ 238
Selecting a category/playlist .........241
Supported variants ........................238
J
Jack Storage location ............................ 474
Using ............................................. 476
Jump starting (engine) ...................... 483
K
Key see SmartKey
KEYLESS-GO
Convenience closing feature ............97
Locking ............................................ 83
Start/Stop button .......................... 307
Starting the engine ........................309
Unlocking ......................................... 83
Key positions
KEYLESS-GO .................................. 307
SmartKey ....................................... 307
Kickdown
Driving tips .................................... 317
Manual drive program ....................320
L
Lamps see Warning and indicator lamps
Lane-change assistant
see Blind Spot Assist
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating .................387
Display message ............................ 413
Function/information ....................365
Lap time (RACETIMER) ...................... 382
LATCH-type (ISOFIX) child seat
anchors ................................................ 68
Letter bar see Character bar
License plate lamp (display
message) ............................................ 404
Light function, active Display message ............................ 405
Lighting
see Lights
Lights
Automatic headlamp mode ............281
Cornering light function .................284
Display message ............................ 403
Driving abroad ............................... 280
Fog lamps ...................................... 282
Hazard warning lamps ...................283
High beam flasher .......................... 283
High-beam headlamps ...................283
Light switch ................................... 280
Low-beam headlamps ....................281
Rear fog lamp ................................ 282
Standing lamps .............................. 280
Switching Adaptive Highbeam
Assist on/off ................................. 388
Switching the daytime running
lamps on/off (on-board
computer) ...................................... 387
Switching the daytime running
lamps on/off (switch) ....................281
Turn signals ................................... 283
see Changing bulbs
see Interior lighting
Light sensor (display message) ....... 405
Loading guidelines ............................ 434
Locator lighting setting (COMAND) . 268
Locking see Central locking
Locking (doors)
Automatic ........................................ 89
Emergency locking ........................... 91
From inside (central locking
button) ............................................. 89
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 38814Index

Useful information ..............................48
Occupant safety .................................. 48
Children in the vehicle ........................66
Panic alarm .......................................... 72
Driving safety systems .......................72
Theft deterrent locking system .........7947Safety

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 the
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
will also deploy.
The OCS may have detected that the seat:
R is either empty or occupied by a person
with a weight up to that of a typical twelve-
month-old child seated in a standard child
restraint
R is occupied by a small individual, such as a
young teenager or a small adult
R is occupied by a child in a child restraint
system, whose weight is greater than that
of a typical twelve-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,
42 indicator lamp : 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.
56Occupant safetySafety

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.
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 sitting properly on the
front-passenger seat and the OCS classifies
the occupant as an adult, the
42 indicator lamp will illuminate
and go out again after approximately six
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 58).
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 safety57SafetyZ

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 unattended in the
vehicle, even if they are secured in a child
restraint system, 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. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following 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 the 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
Special seat belt retractor
All seat belts except the driver's seat belt are
equipped with a special seat belt retractor.
When activated, the special seat belt
retractor ensures the seat belt will not
slacken once the child restraint system has
been secured.
Installing a child restraint system:XAlways comply with the manufacturer's
installation instructions.XPull the seat belt smoothly from the inertia
reel.XEngage the seat belt tongue in the belt
buckle.
Activating the special seat belt retractor:
XPull the seat belt out fully and let the inertia
reel retract it again.
While the seat belt is retracting, you should
hear a ratcheting sound. The special seat
belt retractor is enabled.XPush down on the child restraint system to
take up any slack.
Removing a child restraint system/
deactivating the special seat belt retractor:
XAlways comply with the manufacturer's
installation instructions.XPress the seat belt release button and
guide the belt tongue to the belt outlet.
The special seat belt retractor is
deactivated.GWARNING
Never release the seat belt buckle while the
vehicle is in motion, since the special seat belt
retractor will be deactivated.
LATCH-type (ISOFIX) child seat anchors
in the rear
GWARNING
Children that are too large for a child restraint
must travel in seats using normal seat belts.
Position shoulder belt across the chest and
shoulder, not face or neck.
A booster seat may be necessary to achieve
proper seat belt positioning for children over
41 lb (18 kg) until they reach a height where
68Children in the vehicleSafety

XVehicles with electrically adjustable rear
seats: move the rear seat backrests to an
upright position ( Y page 108).XRemove respective covering cap : of the
Top Tether anchorage.XPlace covering cap : in a suitable place
(e.g. in the glove box).XMove the head restraint upwards.XRoute Top Tether belt ? under the head
restraint between the two head restraint
bars.XHook Top Tether hook = of Top Tether
belt ? into Top Tether anchorage ;.
Ensure that:
R Top Tether hook = is hooked into Top
Tether anchorage ; as shown.
R Top Tether belt ? is not twisted.
R Top Tether belt ? can move freely
between the rear seat backrest and the
head restraint.XInstall the LATCH-type (ISOFIX) child
restraint system with Top Tether. Comply
with the manufacturer's installationinstructions when doing so. Make sure that
Top Tether belt ? is tight.
The child restraint system with Top Tether
belt ? has been removed:
XSlide covering cap : onto Top Tether
anchorage ;.GWARNING
Vehicles with rear power seats:
Never change the rear seat position after
installing the child restraint. This could
R damage the child restraint
R introduce undesirable slack or tension into
the seat belt
R loosen the child restraint
R misposition the child restraint
All of the above will lessen the
effectiveness of the child restraint and thus
increase the chance or severity of injury in
an accident.
Child-proof locks
Important safety notes
GWARNING
Activate the child-proof locks for the rear
doors and the override switch for the rear
windows when children are traveling in the
vehicle.
Children could injure themselves or others
while the vehicle is in motion if, for example,
they:
R open the doors
R open the side windows
R adjust the seats
R operate the cigarette lighter
70Children in the vehicleSafety

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 unattended in the
vehicle, even if they are secured in a child
restraint system, 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. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following 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 the child could be burned on these
parts.
Child-proof locks for the rear doors
GWARNING
Children could open a rear door from inside
the vehicle. This could result in serious
injuries or an accident. Therefore, when
children ride in the rear always secure the rear
doors with the child-proof locks.
You secure each door individually with the
child-proof locks on the rear doors. A door
secured with a child-proof lock cannot be
opened from inside the vehicle. When the
vehicle is unlocked, the door can be opened
from the outside.
XTo activate: press the child-proof lock
lever up in the direction of arrow :.XMake sure that the child-proof locks are
working properly.XTo deactivate: press the child-proof lock
lever down in the direction of arrow ;.
Override feature for the rear side
windows
GWARNING
When children ride on the vehicle's rear seats,
activate the override switch. Otherwise, the
children could be injured, e.g. by trapping
themselves in the rear side window.
For the rear compartment, you can deactivate
operation of:
R the rear side windows
R the cigarette lighter in the rear
R adjustment of the front-passenger seat
from the rear compartment
R the sunblinds:
- in the roof
- of the rear window
- of the rear side windows
Children in the vehicle71SafetyZ

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

Removing the mechanical keyXPush release catch : in the direction of
the arrow and at the same time, remove
mechanical key ; from the SmartKey.
SmartKey battery
Important safety notes
Have the batteries changed at a qualified
specialist workshop.
GWARNING
Batteries contain toxic substances.
Swallowing batteries can lead to serious
health issues or death.
Keep batteries out of the reach of children.
Seek medical attention immediately if a
battery is swallowed.
GWARNING
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Observe
government disposal guidelines. California
residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm .
Checking the batteryXPress the & or % button.
The battery is working properly if battery
check lamp : lights up briefly
If battery check lamp : does not light up
briefly during the test, the battery is
discharged.
XChanging the battery ( Y page 85)
i
You can obtain the battery at a qualified
specialist workshop.
i If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the & or % button locks or
unlocks the vehicle.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the
SmartKey ( Y page 84).XPress mechanical key ; into the opening
in the SmartKey in the direction of theSmartKey85Opening/closingZ