2008 MERCEDES-BENZ S-Class keyless
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83 Safety and Security
Anti-theft systems
1Indicator lamp
Arming: Lock your vehicle with the
SmartKey or KEYLESS-GO*.
The turn signal lamps flash three times
to indicate that the vehicle is locked.
The indicator lamp1 flashes to indi-
cate that the alarm system is armed.
Disarming: Unlock your vehicle with
the SmartKey or KEYLESS-GO*.
The turn signal lamps flash once to in-
dicate that the alarm system is dis-
armed.
Canceling the alarm
To cancel the alarm, do one of the follow-
ing:
Insert the SmartKey or SmartKey with
KEYLESS-GO* in the starter switch.
Press the Œ or ‹ button 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 but-
ton (
page 372).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
i
If the alarm stays on for more than
30 seconds, a call to the Response Center is ini-
tiated automatically by the Tele Aid system
(
page 542) provided Tele Aid service was sub-
scribed to and properly activated, and that nec-
essary mobile phone, power supply and GPS
coverage are available.
i
If the turn signal lamps does not flash three
times one of the following elements may not be
properly closed:
a door
the trunk
Close the respective element and lock the vehi-
cle again.
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The alarm system will rearm automatically
again after approximately 40 seconds if no door
was opened.
Page 288 of 801
287 Control systems
Instrument cluster control system
Instrument cluster control system
The control system is activated as soon as
the SmartKey in the starter switch is
turned to position2 or as soon as the
KEYLESS-GO* start/stop button
(page 372) is in position2. The control
system enables you to:
call up information about your vehicle
change vehicle settings
For example, you can use the control sys-
tem to find out when your vehicle is next
due for service, to call up statistical data
on your vehicle, and much more.
The control system relays information to
the multifunction display.
Multifunction display
1Line for main menus
2Text field in multifunction display
Settings, functions, submenus as well as
any malfunctions are shown to you in the
text field.
Warning!
G
A driver’s attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others, se-
lecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions per-
mit it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
Page 298 of 801
297 Control systems
Instrument cluster control system
1Gear indicator
2RACETIMER
3Seconds display
4Lap
Starting RACETIMER: Press æ.
Displaying intermediate time:
Pressç.
The intermediate time is shown for
5 seconds.
Stopping RACETIMER: Press æ.
To select a different display, press
$, ( or &.Saving lap time and starting a new lap
Press buttonç while the timer is
running.
The intermediate time will be shown for
5 seconds.
Press buttonç within 5 seconds.
The intermediate time shown will be
saved as a lap time.
The RACETIMER begins timing the new
lap. The new lap begins to be timed as
soon as the intermediate time is called
up.
1Gear indicator
2RACETIMER
3Best lap time
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You can start the RACETIMER when the en-
gine is running or the starter switch is in
position2 (
page 370).
i
While the RACETIMER is being displayed,
you cannot adjust the audio volume using but-
tons æ or ç.
i
When you stop the vehicle and turn the
Smartkey to position 1 (
page 370) or, in vehi-
cles with KEYLESS-GO*, turn off the engine and
do not open the driver’s door, the RACETIMER
stops timing. Timing is resumed when you switch
the ignition back on or restart the engine and
then press æ button.
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When you switch on the Night View Assist*
(
page 491) while the RACETIMER is operating,
the RACETIMER will continue to run in the back-
ground but cannot be operated with the multi-
function steering wheel buttons.
To stop the RACETIMER, switch off the Night
View Assist* first.
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You can save up to 16 laps.
Page 362 of 801
361 Controls in detail
Locking and unlocking
Restoring to factory setting: Press
and hold buttonsŒ and‹ si-
multaneously for about 5 seconds until
battery check lamp5 (
page 358)
flashes twice.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you grasp an outside
door handle.
With the KEYLESS-GO function, you can
lock and unlock the vehicle without using
the remote control buttons on the
SmartKey and start the engine without in-
serting the SmartKey in the starter switch.The SmartKey with KEYLESS-GO centrally
locks and unlocks, when set to factory set-
tings (
page 364):
the doors
the trunk
the fuel filler flap
SmartKey with KEYLESS-GO1‹ Lock button
2ŠOpening button for trunk
(
page 511)
3Locking tab for mechanical key
4ΠUnlock button
5Battery check lamp
6ÂPanic button (
page 66)
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When any outside door handle other than
the driver’s outside door handle is grasped, the
vehicle is centrally unlocked.
!
To prevent possible malfunction, avoid ex-
posing the SmartKey with KEYLESS-GO to high
levels of electromagnetic radiation.
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. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
Children 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 could release the electron-
ic parking brake, thereby putting them-
selves 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.
Page 363 of 801
362 Controls in detailLocking and unlocking
Important notes on using KEYLESS-GO
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(page 358).
The starter switch is located under the
KEYLESS-GO button. Pull the
KEYLESS-GO button out in order to ac-
cess the starter switch.
You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with button ‹).
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.
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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.
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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 412).
!
If you cannot lock or unlock the vehicle with
the SmartKey with KEYLESS-GO, then either the
batteries in the SmartKey with KEYLESS-GO are
discharged, the SmartKey with KEYLESS-GO is
malfunctioning or the vehicle batteries are
drained.
Check the batteries in the SmartKey with
KEYLESS-GO and replace them if necessary
(page 712).
Use the mechanical key to unlock the driv-
er’s door (
page 708) and trunk
(
page 709).
Use the mechanical key to lock the driver’s
door (
page 709) and the trunk
(
page 517).
Have the vehicle batteries and their connec-
tions checked (
page 729).
If the SmartKey with KEYLESS-GO is malfunc-
tioning, contact Roadside Assistance or an au-
thorized Mercedes-Benz Center.
Page 364 of 801
363 Controls in detail
Locking and unlocking
Always carry the SmartKey with
KEYLESS-GO with you.
Never store the SmartKey with
KEYLESS-GO together with:
Electronic items such as a mobile
phone or another SmartKey with
KEYLESS-GO
Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of a door or the
trunk lid.
If the vehicle has been parked for more
than 72 hours, you must pull an outside
door handle in order to activate the
KEYLESS-GO function.
In order to start the engine with the
SmartKey with KEYLESS-GO:
The SmartKey with KEYLESS-GO
must be located in the vehicle.
The KEYLESS-GO start/stop button
must be inserted in the starter
switch (
page 372).
The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.
If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle then cannot be locked or
the engine started via the KEYLESS-GO
system.
I f t he Sm a rtK ey with K EY L ES S -GO is re -
moved from the vehicle (e.g. if passen-
ger exits the vehicle with the SmartKey
with KEYLESS-GO)
when pressing the KEYLESS-GO
start/stop button or trying to lock
the vehicle with the outside door
handle the message
“Key Not Detected” appears in the
multifunction display
with the engine running, the mes-
sage “Key Not Detected” appears in
the multifunction display while driv-
ing off
Find the SmartKey with KEYLESS-GO or
change its present location immediate-
ly (e.g. place it on the front passenger
seat or insert it in shirt pocket).
If you have started the engine with the
KEYLESS-GO start/stop button, you
can turn it off again with:
the KEYLESS-GO start/stop button
the SmartKey with KEYLESS-GO in-
serted in the starter switch, when
the automatic transmission is in
park positionP
Page 365 of 801
364 Controls in detailLocking and unlocking
Remember that the engine can be
started by anyone with a SmartKey
wi th KEY LES S-GO tha t i s le ft ins id e t he
vehicle.
Possibility 1: (One SmartKey with
KEYLESS-GO in the vehicle, one
SmartKey with KEYLESS-GO outside
the vehicle):
If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, no message
appears in the multifunction display.
Possibility 2: (One SmartKey with
KEYLESS-GO in the vehicle, no
SmartKey with KEYLESS-GO outside
the vehicle):
When exiting and trying to lock the ve-
hicle, the message “Key Detected In
Vehicle” appears in the multifunction
display. The vehicle will not be locked.Factory setting
1Outside door handle
Global unlocking: Grasp an outside
door handle1.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
and rearm the anti-theft alarm system
within approximately 40 seconds of un-
locking if:
neither a door nor the trunk is opened
the central locking/unlocking switch is
not activated
i
Your vehicle may be equipped with an
acoustic lock and unlock confirmation signal fea-
ture. If your vehicle is equipped with this feature
and the feature is activated, an acoustic signal
will sound when the vehicle is locked or unlocked
using the SmartKey with KEYLESS-GO.
To determine whether or not your vehicle is
equipped with this feature, contact an autho-
rized Mercedes-Benz Center. If equipped and
you wish to activate or deactivate the feature, or
adjust its signal volume, also contact an autho-
rized Mercedes-Benz Center.
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The vehicle could inadvertently be unlocked
if the SmartKey with KEYLESS-GO is within 3 ft
(1 m) of the vehicle and:
an outside door handle is splashed with wa-
ter, or
you attempt to clean an outside door handle.
Page 366 of 801
365 Controls in detail
Locking and unlocking
Global locking: Close all doors and
touch outside of door handle1. 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.Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you, grasp the driv-
er’s outside door handle only the driver’s
door and the fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about 5 seconds un-
til battery check lamp5 (
page 361)
flashes twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel fill-
er flap: Grasp the driver’s outside door
handle.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
For more information, see “Factory
setting” (
page 364).
The locking knob in the driver’s
door moves up.
The anti-theft alarm system is dis-
armed.
Global unlocking: Grasp any outside
door handle other than the driver’s out-
side door handle.
All turn signal lamps flash once.
An acoustic signal sounds once
(if equipped and feature activated).
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
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Vehicles with trunk opening/closing
system*:
You can also lock the vehicle using the
KEYLESS-GO locking/closing switch
(
page 514).