child lock MERCEDES-BENZ S550 2007 W221 Owner's Manual

61 Safety and Security
Occupant safety
If the seat belts do not release:
Adjust the backrest or seat slightly to
the rear until the seat belt tension is di-
minished.
The locking mechanism releases.
Children in the vehicle
If an infant or child is traveling with you in
the vehicle:

Secure the child using an infant or child
restraint appropriate to the age and
size of the child.


Make sure the infant or child is
properly secured at all times while the
vehicle is in motion.
!
When moving the seat, make sure there are
no items in the footwell or behind the seats. Oth-
erwise you could damage the seats.
Warning!
G
Do not leave children unattended in the ve-
hicle, even if they are secured in a child re-
straint system. The children could

injure themselves on parts of the vehicle


be seriously or fatally injured through
excessive exposure to extreme heat or
cold
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.
If children open a door, they could

injure other persons


get out of the car and injure themselves
or be injured by following traffic
Do not carry heavy or hard objects in the
passenger compartment or trunk unless
they are firmly secured in place. For more in-
formation, see “Loading and storing”
(
page 447) section of the “Controls in de-
tail” chapter.
Unsecured or improperly positioned cargo
increases a child’s risk of injury in the event
of


strong braking maneuvers


sudden changes of direction


an accident

62 Safety and SecurityOccupant safetyInfant and child restraint systems
We recommend all infants and children be
properly restrained at all times while the
vehicle is in motion.
All lap-shoulder belts except the driver’s
seat belt have special seat belt retractors
for secure fastening of child restraints.
To fasten a child restraint, follow child
restraint instructions for mounting. Then
pull the shoulder belt out completely and
let it retract. During seat belt retraction, a
ratcheting sound can be heard to indicate
that the special seat belt retractor is acti-
vated. The belt is now locked. Push down
on child restraint to take up any slack.
To deactivate, release seat belt buckle and
let seat belt retract completely. To deacti-
vate the special seat belt retractor for the
front passenger seat, the front passenger
seat must be in the most backward posi-
tion. The seat belt can again be used in the
usual manner.
Warning!
G
Never release the seat belt buckle while the
vehicle is in motion, since the special seat
belt retractor will be deactivated.i
Information on child seats with mounting fit-
tings for tether anchorages (
page 64).
For information on LATCH-type child seat
mounts (
page 65).
!
The use of infant or child restraints is re-
quired by law in all 50 states, the District of Co-
lumbia, the U.S. territories and all Canadian
provinces.
Infants and small children should be seated in an
appropriate infant or child restraint system prop-
erly secured by a lap/shoulder belt or, if so
equipped, a top tether anchorage point and a
child restraint lower anchorage system that
complies with U.S. Federal Motor Vehicle Safety
Standards 213 and 225 and Canadian Motor Ve-
hicle Safety Standard 213 and 210.2.
A statement by the child restraint manufacturer
of compliance with this standard can be found
on the instruction label on the restraint and in
the instruction manual provided with the re-
straint.
When using any infant or child restraint system,
make sure to carefully read and follow all manu-
facturer’s instructions for installation and use.
Please read and observe warning labels affixed
to the inside of the vehicle and to infant or child
restraints.Warning!
G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. 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
appropriate infant, or toddler restraint, or
booster seat recommended for the size and
weight of the child.

67 Safety and Security
Occupant safety
Override switch for rear passenger compartment
You can disable select functions in the rear
passenger compartment for added safety
(for instance when you have children riding
in the rear passenger compartment).
You can disable the following functions in
the rear passenger compartment:

rear door window operation
(page 353)


adjustment of front passenger seat
from the rear* (
page 320)


rear center console lighter
(page 458)


sunblinds for panorama roof*
(page 443)


rear window sunshade (
page 456)
and rear side window sunshades
(
page 355)The override switch is located on the driv-
er’s door.
1Override switch
2Indicator lamp

Activating: Press switch 1.
Indicator lamp2 comes on. The func-
tions in the rear are disabled.

Deactivating: Press switch 1 again.
Indicator lamp2 goes out. The func-
tions in the rear are enabled again.Warning!
G
Activate the override switch when children
are riding in the back seats of the vehicle.
The children may otherwise injure them-
selves, e.g. by becoming trapped in the win-
dow opening.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.i
Operation of the rear door windows with the
switches located in the driver’s door is still pos-
sible.

224 Control systemsCOMAND vehicle menuActivating easy-entry/exit feature
Use this function to activate and deacti-
vate the easy-entry/exit feature
(page 328).
The following settings are available for the
easy-entry/exit feature:

Select “Vehicle”.
The main area is active.

Selecting “Easy Entry/Exit Feature”
menu: Slide omp or rotate ymz.

Confirming selection: Press n.
or

Select “Vehicle”
“Vehicle”
“Easy
Entry/Exit Feature”.

Confirming selection: Press n.
A selection list appears.
The current setting is indicated by a
dotR.
i
The components and operating principles of
COMAND can be found on (
page 79).
OFF
The easy-entry/exit
feature is deactivated.
Steering Column
& Seat
Both the steering col-
umn and the driver’s
seat are moved.
Warning!
G
You must make sure no one can become
trapped or injured by the moving steering
wheel and driver’s seat when the easy-en-
try/exit feature is activated.
To cancel seat/steering wheel movement,
do one of the following:

Press seat adjustment switch
(page 319).


Move steering column stalk
(page 330).


Press one of the memory position but-
tons or the memory button M
(page 337).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.

304 Controls in detailLocking and unlockingSmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys are of differ-
ent color to help distinguish each
SmartKey unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:

the doors


the trunk


the fuel filler flap
SmartKey with remote control1‹ Lock button
2ŠOpening button for trunk
(
page 436)
3Mechanical key locking tab
4ŒUnlock button
5Battery check lamp
6ÂPanic button (
page 68)
!
To prevent possible malfunction, avoid ex-
posing the SmartKey to high levels of electro-
magnetic radiation.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. It is possible
for children to open a locked door from the
inside, which could result in an accident
and/or serious personal injury.Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
or trunk lid opening when closing a door or
the trunk. Be especially careful when small
children are around.
Before closing doors, make sure there is no
possibility of someone getting caught in a
door during closing.

307 Controls in detail
Locking and unlocking
Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. It is possible for children
to open a locked door from the inside, which
could result in an accident and/or serious
personal injury.
They could start the vehicle with a valid
SmartKey with KEYLESS-GO left in the vehi-
cle or with the KEYLESS-GO button on the
starter switch, or they could release the
electric parking brake, thereby putting
themselves and others in danger. Switch off
the engine and take the SmartKey with
KEYLESS-GO with you even if you are only
leaving the vehicle for a short while.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
or trunk lid opening when closing a door or
the trunk. Be especially careful when small
children are around.
Before closing doors, make sure there is no
possibility of someone getting caught in a
door during closing.i
USA only:
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interfer-
ence, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
Canada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
You can also open and close the door win-
dows and tilt/sliding sunroof, or the tilt/ sliding
panel* using the SmartKey with KEYLESS-GO
(
page 355).

313 Controls in detail
Locking and unlocking
Power closing assist for doors and trunk lid
It is not necessary to slam the door or
trunk lid closed. An electrical power-assist-
ed mechanism draws doors and trunk lid
closed quietly and automatically once door
and trunk lid has been latched. When the
electrical power-assisted mechanism has
stopped, doors and/or trunk can be
re-opened.

Power closing assist for doors: Press
the doors gently past the initial engage
position into the lock.
The doors close automatically.

Power closing assist for trunk lid:
Press the trunk lid gently into its lock.
The trunk closes automatically.
Automatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of ap-
proximately 9 mph (15 km/h) or more. The
locking knobs in the doors move down.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
You can deactivate the automatic locking
using the COMAND system (
page 223).
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the door
or trunk lid opening when closing a door or
the trunk. Be especially careful when small
children are around.
In case of danger, pull the inside or outside
door handle, or pull the trunk lid handle.
To prevent personal injury, never actuate
the closing assist mechanism by tampering
with the door or trunk lid latch.
Warning!
G
Only drive with the doors closed. Otherwise,
one or more of the doors could open while
the vehicle is in motion, putting you and/or
others at risk.Warning!
G
Only drive with the trunk closed as, among
other dangers such as blocked visibility, ex-
haust fumes may enter the vehicle interior.
i
The doors are designed to unlock automati-
cally after an accident if the force of the impact
exceeds a preset threshold. The vehicle locks au-
tomatically when the ignition is switched on and
the wheels are turning at vehicle speeds of ap-
proximately 9 mph (15 km/h) or more. You
could therefore lock yourself out when the vehi-
cle


is pushed or towed


is on a test stand

314 Controls in detailLocking and unlockingLocking and unlocking from the inside
You can lock or unlock the doors and the
trunk from the inside using the central
locking or unlocking switch. This can be
useful, for example, if you want to lock the
vehicle before starting to drive.
The fuel filler flap will not be locked or un-
locked with the central locking or unlock-
ing switch, respectively.1Central unlocking switch
2Central locking switch

Locking: Press switch ‹.
If the front passenger door is closed,
the vehicle locks.

Unlocking: Press switch Œ.
The vehicle unlocks.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
i
You can open a locked door from the inside.
Open door only when conditions are safe to do
so.
If the vehicle was previously centrally locked
with the SmartKey or the with KEYLESS-GO*, it
will not unlock using the central unlocking
switch1.
If the vehicle was previously locked with the cen-
tral locking switch2:


While in the global remote control mode, the
vehicle is unlocked completely when a door
is opened from the inside.


While in the selective remote control mode,
only the door opened from inside is un-
locked.

315 Controls in detail
Starter switch positions
Starter switch positions
SmartKeyStarter switch
0For removing SmartKey
1Power supply for some electrical con-
sumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position.
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary.
If a lamp in the instrument cluster re-
mains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 544).
3Starting positionFor information on starting the engine us-
ing the SmartKey, see “Starting with the
SmartKey” (
page 359).
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
i
When you switch on the ignition, the indica-
tor and warning lamps (except high beam head-
lamp indicator lamp and turn signal indicator
lamps unless activated) in the instrument cluster
come on. The indicator and warning lamps (ex-
cept high beam headlamp indicator lamp and
turn signal indicator lamps if activated) should go
out when the engine is running. This indicates
that the respective systems are operational.
i
When the SmartKey is removed from the
starter switch and the automatic transmission is
in a position other thanP, the automatic trans-
mission automatically shifts to P.
!
If the SmartKey cannot be turned in the
starter switch, the battery may not be sufficient-
ly charged.


Check the battery and charge it if necessary
(page 634).


Get a jump start (
page 639).
To prevent accelerated battery discharge or a
completely discharged battery, always remove
the SmartKey from the starter switch when the
engine is not in operation.

318 Controls in detailSeatsSeat adjustment
You can adjust the lumbar support, multi-
contour seats for driver and front passen-
ger, as well as drive-dynamic multicontour
seats using COMAND (
page 236).
Warning!
G
All seat, head restraint adjustments, as well
as fastening of seat belts, must be done be-
fore the vehicle is put into motion.Warning!
G
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 ride in a moving vehicle with the seat
back in an excessively reclined position as
this can be dangerous. You could slide un-
der the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen or neck. That could cause serious or
fatal injuries. The seat backrest and seat
belts provide the best restraint when the
wearer is in a nearly upright position and
belts are properly positioned on the body.
Your seat must be adjusted so that you can
correctly fasten your seat belt
(page 339).
Never place hands under the seat or near
any moving parts while a seat is being ad-
justed.
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle.
Even with the SmartKey or SmartKey with
KEYLESS-GO* removed from the starter
switch or the SmartKey with KEYLESS-GO*
removed from the vehicle, the power seats
can be operated when the respective door is
open. Therefore, do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
Warning!
G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. 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
appropriate infant, or toddler restraint, or
booster seat recommended for the size and
weight of the child. For additional informa-
tion, see “Children in the vehicle”
(page 61).
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.