MERCEDES-BENZ S600 2008 W221 Owner's Manual

340 Controls in detail
Locking and unlocking
Global locking: Close all doors and
touch outside of door handle1
(
page 338). Do not keep your hand in
the door handle recess.
With the trunk and both doors closed:

All turn signal lamps flash three
times.

An acoustic signal sounds three
times (if equipped and feature acti-
vated).

The locking knobs in the doors
move down.

The anti-theft alarm system is
armed.
Restoring to factory setting: Press
and hold buttonsŒ and‹ si-
multaneously for about 5 seconds until
battery check lamp5 (
page 335)
flashes twice.Checking batteries in the SmartKey or
SmartKey with KEYLESS-GO*
Press button‹ orŒ.
The battery check lamp (
page 332)
or (
page 335) comes on briefly to in-
dicate that the SmartKey or SmartKey
with KEYLESS-GO batteries are in or-
der.Loss of the SmartKey or SmartKey with
KEYLESS-GO*
If you lose your SmartKey, SmartKey with
KEYLESS-GO or mechanical key, you
should do the following:
Have the SmartKey or SmartKey with
KEYLESS-GO deactivated by an autho-
rized Mercedes-Benz Center.
Report the loss of the SmartKey,
SmartKey with KEYLESS-GO or the me-
chanical key immediately to your car
insurance company.
Have the mechanical lock replaced if
necessary.
Any authorized Mercedes-Benz Center will
be glad to supply you with a replacement.
iVehicles with trunk opening/closing
system*:
You can also lock the vehicle using the
KEYLESS-GO locking/closing switch
(
page 482).
!If the battery check lamp does not come on
briefly during check, the SmartKey or SmartKey
with KEYLESS-GO batteries are discharged.
Replace the batteries (
page 676).
You can obtain the required batteries at any au-
thorized Mercedes-Benz Center.
iIf the batteries are checked within signal
range of the vehicle, pressing button‹ or
Πwill lock or unlock the vehicle accordingly.


341 Controls in detail
Locking and unlocking
Opening doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
1Locking knob
2Inside door handleFront doors
Pull on door handle2 on the respec-
tive front door to open door.
If door was locked, locking knob1 will
move up.
Rear doors
Pull up locking knob1 on the respec-
tive rear door to unlock door.
Pull on door handle2 on the respec-
tive rear door to open door.
iIf the vehicle has previously been locked
with the SmartKey or KEYLESS-GO*, opening a
door from the inside will trigger the anti-theft
alarm system.
To cancel the alarm, do one of the following:

Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.

Press button Œ or ‹ on the SmartKey
or SmartKey with KEYLESS-GO*.
In vehicles with KEYLESS-GO*:

Grasp an outside door handle.
The SmartKey with KEYLESS-GO* must be
within 3 ft (1 m) of the vehicle.

Press the KEYLESS-GO* start/stop button
(
page 346).
The SmartKey with KEYLESS-GO* must be
inside the vehicle.
iIf you hear a warning signal you have forgot-
ten to switch off the headlamps before opening
the driver’s door.
In addition the message “Please switch off
lights” appears in the multifunction display.
Switch off the headlamps.
!Failure to switch off the headlamps when
leaving the vehicle may result in a discharged
battery.

342 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.For more information on closing the trunk
lid, see “Closing trunk” (
page 480).
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 245).
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.
These fumes may be damaging to your
health.
iThe doors are designed to unlock automati-
cally after an accident if the force of the impact
exceeds a preset threshold.
The vehicle locks automatically when the ignition
is switched on and the wheels are turning at ve-
hicle speeds of approximately 9 mph (15 km/h)
or more. You could therefore lock yourself out
when the vehicle

is pushed or towed

is on a test stand

343 Controls in detail
Locking and unlocking
Locking 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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
iYou can open a locked door from inside at
any time. Open door only when conditions are
safe to do so.
If the vehicle was previously centrally locked
with the SmartKey or with KEYLESS-GO*, it will
not unlock using the central unlocking switch.
If the vehicle was previously locked with the cen-
tral locking switch:

and the SmartKey or SmartKey with
KEYLESS-GO* is set to factory settings, the
complete vehicle is unlocked when a door is
opened from the inside

and the SmartKey or SmartKey with
KEYLESS-GO* is set to selective settings,
only the door opened from the inside is un-
locked

344 Controls in detail
Starter switch positions
SmartKey
Starter 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 598).
3Starting positionFor information on starting the engine us-
ing the SmartKey, see “Starting with the
SmartKey” (
page 390).
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
iWhen 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.
iWhen 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 692).

Get a jump start (page 697).
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.

345 Controls in detail
Starter switch positions
SmartKey with KEYLESS-GO*
Vehicles equipped with the KEYLESS-GO
feature are supplied with a SmartKey with
integrated KEYLESS-GO function and a re-
movable KEYLESS-GO start/stop button.
With the KEYLESS-GO start/stop button
inserted and the SmartKey with
KEYLESS-GO present in the vehicle, press-
ing the KEYLESS-GO start/stop button

without the brake pedal depressed
corresponds to the various starter
switch positions (
page 346)

with the brake pedal firmly depressed
will start the engine (
page 390)If you wish or should there be a need to in-
sert the SmartKey with KEYLESS-GO in the
starter switch, the KEYLESS-GO start/stop
button can be easily removed by pulling it
out of the starter switch.
1KEYLESS-GO start/stop button
2Starter switch
Insert KEYLESS-GO start/stop
button1 into starter switch 2 (if not
inserted already).
iThe function of the SmartKey overrules the
KEYLESS-GO function.
iThe KEYLESS-GO start/stop button does
not need to be removed from the starter switch
when you leave the vehicle. However, always
take the SmartKey with KEYLESS-GO with you
when you leave the vehicle. As long as the
SmartKey with KEYLESS-GO is in the vehicle, the
vehicle’s electrical systems can be switched on
or the engine can be started using the
KEYLESS-GO start/stop button.
iWhen you switch from SmartKey mode back
to KEYLESS-GO mode, the system requires
2 seconds of detection time before you can use
the KEYLESS-GO button as usual.


346 Controls in detail
Starter switch positions
The SmartKey with KEYLESS-GO must be
located in the vehicle.
Make sure the automatic transmission
is set toP.
Do not depress the brake pedal.
KEYLESS-GO start/stop button
1USA only
2Canada only
Position 0
Before you press the KEYLESS-GO
start/stop button, the vehicle’s on-board
electronics have status 0 (as with
SmartKey removed).Position 1
Press the KEYLESS-GO start/stop but-
ton once.
This supplies power for some electrical
consumers, such as seat adjustment.
Ignition (or position 2)
Press the KEYLESS-GO start/stop but-
ton twice.
This supplies power for all electrical
consumers.
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 598).
For information on starting the engine us-
ing the KEYLESS-GO start/stop button,
see “Starting with KEYLESS-GO*”
(
page 390).
iIf you now press the KEYLESS-GO
start/stop button

once again, the ignition (position2) is
switched on

twice, the power supply is again switched off
iIf you now press the KEYLESS-GO
start/stop button once, the power supply is
again switched off.
iWhen 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.


347 Controls in detail
Seats
Seats
Seat adjustment
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 seat belt would apply force at
the abdomen or neck. That could cause se-
rious or fatal injuries. The seat backrest and
seat belts provide the best restraint when
the wearer is in a nearly upright position and
seat belts are properly positioned on the
body.
Warning!G
Your seat must be adjusted so that you can
correctly fasten your seat belt
(
page 368).
Observe the following points:

Adjust the backrest until your arms are
slightly angled when holding the steer-
ing wheel.

Adjust the seat to a comfortable seating
position that still allows you to reach the
accelerator/brake pedal safely. The po-
sition should be as far back as possible
with the driver still able to operate the
controls properly.

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.

Never place hands under the seat or
near any moving parts while a seat is be-
ing adjusted.
Failure to do so could result in injury to per-
sons.
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.

348 Controls in detail
Seats
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 259).Front power seat adjustment
Example driver’s door
1Head restraint height (page 353)
2Seat height
3Seat cushion tilt
4Seat cushion depth
5Seat fore and aft
6Seat backrest tilt
Switch on the ignition (page 344).
or
Open the respective door.
Seat height: Press the switch up or
down in the direction of arrow2.
Seat cushion tilt: Press the switch up
or down in the direction of
arrow3until your upper legs are
lightly supported.
Seat cushion depth: Press the switch
forward or backward in the direction of
arrow4 until your legs are supported
comfortably.
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
appropriately sized infant restraint, toddler
restraint, or booster seat recommended for
the size and weight of the child. For addi-
tional information, see “Children in the vehi-
cle” (
page 57).
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.
iIf PRE-SAFE® has been activated, the front
passenger’s seat and/or electrically adjustable
rear seats* will be moved to a more favorable
seat position.
iThe memory function (page 365) lets you
store the settings for the seat positions together
with the settings for the steering wheel and the
exterior rear view mirrors.
!When moving the seats, make sure there are
no items in the footwell or behind the seats; oth-
erwise, you could damage the seats.

349 Controls in detail
Seats
Seat fore and aft: Press the switch for-
ward or backward in the direction of
arrow5.
Seat backrest tilt: Press the switch
forward or backward in the direction of
arrow6.Rear power seat* adjustment
(rear outer seats)
Example rear right door
1Seat cushion tilt
2Seat backrest tilt
3Folding down and placing upright head
restraint (
page 355)
4Head restraint tilt (
page 355)
5Seat fore and aft
Switch on the ignition (page 344).
or
Open the respective door.
Adjust desired seat using seat
switches1,2 and5.Adjusting front passenger seat from
driver’s seat/rear*
iDepending on the set height of the head re-
straint, the seat fore and aft position is automat-
ically pre-set.Warning!G
When adjusting the front passenger seat,
make sure the seat, if occupied, is as far
from the passenger front air bag as possi-
ble.
Otherwise, the passenger could be seriously
or even fatally injured in the event of an ac-
cident or braking maneuver.
Make sure no one is caught or injured while
the seat is being adjusted.
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.