2003 MERCEDES-BENZ CL55AMG keyless

73 Safety and Security
Driving safety systems
BAS
The Brake Assist System (BAS) operates in
emergency situations. If you apply the
brakes very quickly, the BAS automatically
provides full brake boost, thereby poten-
tially reducing the braking distance. Apply
continuous full braking pressure until the
emergency braking situation is over. The
ABS will prevent the wheels from locking.
When you release the brake pedal, the
brakes function again as normal. The BAS
is then deactivated.
More information can be found in the
“Practical hints” section (
page 273).
ESP
The Electronic Stability Program (ESP)
monitors the vehicle's traction (force of
adhesive friction between the tires and the
road surface) and handling.
The ESP recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and
by limiting engine output, the ESP works to
stabilize the vehicle. The ESP is especially
useful while driving off and on wet or slip-
pery road surfaces.
The ESP warning lamp
v
in the instru-
ment cluster flashes when the ESP is en-
gaged.
The warning lamp
v
in the instrument
cluster lights up when you turn the key in
the starter switch to position2 or press
the KEYLESS-GO* start/stop button twice.
It goes out when the engine is running.
Warning!
G
The BAS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes
and tires or the traction. The BAS cannot
prevent accidents, including those resulting
from excessive speed in turns, following an-
other vehicle too closely, or hydroplaning.
Only a safe, attentive, and skillful driver can
prevent accidents. The capabilities of a BAS
equipped vehicle must never be exploited in
a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others.

76 Safety and SecurityAnti-theft systems
Anti-theft systemsImmobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
Activating

With the SmartKey: Removing the key
from the starter switch activates the
immobilizer.


With KEYLESS-GO*: Turning off the en-
gine by means of the KEYLESS-GO
start/stop button on the gear selector
lever activates the immobilizer.Deactivating


With the SmartKey: Inserting the key in
the starter switch deactivates the im-
mobilizer.


With KEYLESS-GO*: Starting the en-
gine by means of the KEYLESS-GO
start/stop button on the gear selector
lever deactivates the immobilizer.
iIn case the engine cannot be started
(yet the vehicle’s battery is charged),
the system is not operational. Contact
an authorized Mercedes-Benz Center
or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).

77 Safety and Security
Anti-theft systems
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens

a door


the trunk


the hood
The alarm system will also be triggered
when


someone attempts to raise the vehicle


the vehicle is opened with the mechan-
ical keyArming the alarm system
The alarm system is armed after locking
the vehicle with the remote control or
KEYLESS-GO*. The turn signal lamps blink
three times to indicate that the alarm sys-
tem is activated. The indicator lamp in the
central locking switch will blink after ap-
proximately 10 seconds when the alarm
system is completely armed (
page 95).Disarming the alarm system
The alarm system is disarmed when you
unlock your vehicle with the remote con-
trol or KEYLESS-GO*. The turn signal
lamps blink once to indicate that the alarm
system is deactivated.
Canceling the alarm
To cancel the alarm:
With the SmartKey

Insert the key in the starter switch.
or

Press the
Œ
or
‹
button.
With KEYLESS-GO*

Grasp the outside door handle.
or

Press the KEYLESS-GO* start/stop
button.
iIf the alarm stays on for more than
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid sys-
tem provided Tele Aid service was
subscribed to and properly activated,
and that necessary cellular service and
GPS coverage are available.
iIf the turn signal lamps do not blink
three times one of the following ele-
ments may not be properly closed:

a door


the trunk lid


the hood
Close the respective element and lock
the vehicle again.

81 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press button
Œ
.
All turn signal lamps blink once. The
locking knobs in the doors move up.
The anti-theft alarm system is switched
off. If it is dark, the locator lighting
switches on.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if:


neither door nor trunk is opened


the SmartKey is not inserted in the
starter switch


the central locking switch is not acti-
vatedGlobal locking

Press button
‹
.
All turn signal lamps blink three times.
The locking knobs in the doors move
down.
The anti-theft alarm system is activat-
ed.
Selective setting
If you frequently travel alone, you may wish
to reprogram the key so that
pressing
Œ
only unlocks the driver’s
door and the fuel filler flap.

Press and hold buttons
Œ
and
‹

simultaneously for about five seconds
until battery check lamp5 blinks twice.
The key will then function as follows:
Unlocking driver’s door and fuel filler
flap

Press button
Œ
once.
Global unlocking

Press button
Œ
twice.Global locking

Press button
‹
.
Restoring to factory setting

Press and hold buttons
Œ
and
‹

simultaneously for about six seconds
until battery check lamp5 blinks twice.
!To prevent possible malfunction, avoid
exposing the key to high levels of elec-
tromagnetic radiation.
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take the
KEYLESS-GO* card with you and lock the ve-
hicle. 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 re-
sult in an accident and/or serious injury.

83 Controls in detail
Locking and unlocking
KEYLESS-GO card*
Specially equipped vehicles come with two
KEYLESS-GO cards. On these vehicles, the
validity of the KEYLESS-GO card is
checked every time you grasp a door
handle.
If the card is valid, your vehicle unlocks

the doors


the trunk lid


the fuel filler flapImportant notes on using KEYLESS-GO


Always carry the KEYLESS-GO card
with you.


Never store the KEYLESS-GO card to-
gether with:

Electronic items such as a cellular
phone or another KEYLESS-GO card


Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.


Always take an electronic SmartKey
with you in case of a malfunction of the
KEYLESS-GO system.


To lock or unlock the vehicle, the card
must be located outside the vehicle
within approximately 3 ft. (1 m) of a
door or the trunk lid.


In order to start the engine with the
KEYLESS-GO card:

The KEYLESS-GO card must be lo-
cated in the vehicle.


All the doors must be closed.


If you have started the engine with the
KEYLESS-GO start / stop button, you
can only turn it off again with this but-
ton, even if you have put the key in the
starter switch in the meantime.


This does not apply if, after starting, the
selector lever is still in positionP. The
key will then have priority over the card
and the vehicle’s electrical system will
operate according to the position of
the key in the starter switch, even stop-
ping the engine.


If the KEYLESS-GO card is positioned
farther away from the vehicle (e.g. in-
side clothing or briefcase) and can no
longer be recognized by the system,
the vehicle cannot be locked or the en-
gine started via the KEYLESS-GO sys-
tem.
Warning!
G
When leaving the vehicle, always remove the
key from the starter switch, take the
KEYLESS-GO card with you and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.
!To prevent possible malfunction, avoid
exposing the KEYLESS-GO card to high
levels of electromagnetic radiation.

84 Controls in detailLocking and unlocking

If the KEYLESS-GO card is removed
from the vehicle while the ignition is
switched on (e.g. if passenger exits the
vehicle with the card), the message CHIP CARD NOT RECOGNIZED!
will ap-
pear in the multifunction display.
Find the card or change its present lo-
cation immediately (e.g. place it on the
front passenger seat or insert it in shirt
pocket).


Remember that the engine can be
started by anyone with a KEYLESS-GO
card that is left inside the vehicle. If you
leave the card behind when exiting and
locking the vehicle, the message
CHIP
CARD DETECTED IN VEHICLE!
will ap-
pear in the multifunction display.Factory setting
Global unlocking

Grasp the door handle.
The vehicle will lock again automatically
within approximately 40 seconds of un-
locking if neither door nor trunk is opened.
Global locking

Press lock button at door handle
(page 52) or trunk (
page 86) and
(
page 93).Individual setting
If you frequently travel alone, you may wish
to reprogram the KEYLESS-GO card so that
grasping a door handle only unlocks the
driver’s door, interior lockable storage
compartments and the fuel filler flap.
1Programming button
2“Driver’s door” symbol
3“Global unlock” symbol
iThe vehicle could inadvertently unlock
if the KEYLESS-GO card is within 3 ft.
(1 m) of the vehicle and

the door handle is splashed with
water, or


you attempt to clean the door
handle.

85 Controls in detail
Locking and unlocking

Press and hold the programming
button1 until the “Driver’s door”
symbol2 lights up.
The KEYLESS-GO card will then func-
tion as follows:
Unlocking the driver’s door
Grasp the driver’s door handle.
Global unlocking

Grasp the door handle on the pas-
senger side.
Global locking

Press lock button at door handle or
trunk.
Restoring to factory setting

Press and hold the programming
button1 until the “Global unlock”
symbol3 lights up.Checking the batteries

Briefly press the programming
button1.
The KEYLESS-GO card batteries are in
order if the indicator lamp for either the
“Driver’s door”2 or “Global unlock”3
comes on red or green.
!If you cannot lock or unlock the vehicle
with the KEYLESS-GO card, then either
the batteries of the KEYLESS-GO card
are discharged or the KEYLESS-GO
card is malfunctioning or the vehicle
battery is drained.

Check the batteries of the
KEYLESS-GO card (
page 85) and
replace them if necessary
(
page 299).
or


Use the mechanical key to unlock
the doors (
page 297) and trunk
(
page 298) as required. Lock the
vehicle using the mechanical key
(page 298).
If your KEYLESS-GO card is malfunc-
tioning, contact your authorized
Mercedes-Benz Center.
!If the symbols2 or3 do not light up
during the check, then the batteries of
the KEYLESS-GO card are discharged.

Change the batteries (
page 299).
You can obtain the batteries at any au-
thorized Mercedes-Benz Center.

86 Controls in detailLocking and unlockingChecking vehicle lock status
If you cannot remember whether you have
locked the vehicle, you can check the lock
status using the KEYLESS-GO card.
Briefly press programming button1.
The indicator lamp for “Driver’s door”2
or “Global unlock”3 lights up in red or
green.
Vehicle lock status:
Red Vehicle is locked
Green Vehicle is unlockedLocking the vehicle
1Trunk lock button

Press the lock button at door
(page 52) or trunk1.
Closing the side windows and the
sliding / pop-up roof

Press and hold lock button at door
(page 52) until the side windows and
the sliding / pop-up roof are closed.
iWhen the vehicle is unlocked and the
anti-theft alarm system is switched off,
the turn signals illuminate briefly. If it is
dark, the locator lighting also switches
on (
page 137).
When the vehicle is locked and the an-
ti-theft alarm system is activated, the
the turn signals flash three times.
Warning!
G
When closing the windows and the sliding /
pop-up roof, make sure that there is no dan-
ger of anyone being harmed by the closing
procedure.
If potential danger exists, proceed as fol-
lows:

Release the lock button.


Pull on the door handle and hold firmly.
The side windows and the
sliding / pop-up roof will open for as long
as the door handle is held but the door
not opened.