key battery Lexus GS430 2006 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2005 PROD. OWNER'S MANUAL (OM30649U)

KEYS AND DOORS
11
If the electronic key battery is discharged, the entry function
and wireless remote control cannot be used. Use the
mechanical key integrated into
the electronic key by inserting
it in the door keyhole to lock or unlock doors and into the trunk
lid keyhole to unlock the trunk lid. To start the engine, see
“Starting the engine when the electronic key battery is
discharged” on page 27. In order to activate the entry function
and wireless remote control, the battery should be replaced.
For details, see “Replacing the battery” on page 33.
(a) Engine immobilizer
G11009
The engine immobilizer is a theft prevention function.
When you enter the vehicle carrying an electronic key and
press the engine switch, the electronic code in the key is
automatically checked to determine whether it
corresponds to the registered ID code for the vehicle. If
the ID code is verified, you can start the engine.
The system is automatically set when the engine switch is off.
The indicator light will start flashing to show the system is set.

KEYS AND DOORS
13
For vehicles sold in Canada
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, including
interference that may cause undesired operation of the
device.
(b) Entry functions*
Entry functions are as follows:
 Locking the doors
(For details, see page 19.)
 Unlocking the door(s)
(For details, see page 22.)
 Changing the doors to be unlocked
(For details, see page 23.)
 Unlocking the trunk lid
(For details, see page 24.)
 Battery power saving
(For details, see page 26.)
 Starting the engine when the electronic key battery is
discharged
(For details, see page 27.)
NOTE:
*These functions can be deactivated.
Ask your Lexus dealer for details.

KEYS AND DOORS
18Inside warning
alarm
Outside warning alarmWarning message onthe multi− information
display
Causes
ChimesNoneNoneThe driver’s door was opened when the engine switch is
selected in “ACC” mode and the selector lever was in “P”, or\
when the steering lock is not activated.
Beep
(sounds
continuously)Beep
(sounds
continuously)“SHIFT TO P
RANGE” and “KEY IS
NOT DETECTED”
appear alternately.The electronic key was not in the vehicle, the driver’s door
was opened and closed when the engine switch was
selected in “ACC” or “IG− ON” mode and the selector lever
was in a position other than “P”.
Beeps
(sound
intermittently)NoneNoneThe driver’s door was opened when the engine switch was
selected in “ACC” or “IG− ON” mode and the selector lever
was in a position other than “P”.
One chimeNone“KEY IS NOT
DETECTED”
(shown for about 8
seconds)The engine switch was pushed while the electronic key was
not in the vehicle or the electronic key battery was
discharged.
One chimeNone”LOW KEY
BATTERY”Electronic key battery is low.

KEYS AND DOORS
26BATTERY POWER SAVING
If the electronic key is left within the effective range of the
outside of the vehicle for more than 10 minutes without locking
or unlocking the doors, the entry function is disabled.
If the electronic key does not enter the effective range of the
outside of the vehicle for 4 days, the output interval of the
electromagnetic signal is extended. If this situation continues
for 14 days, the entry function is disabled.
To reactivate the entry function properly, perform any of the
following:
(a) Press the lock button on the outside door handle while
carrying the electronic key.
(b) Perform a wireless remote control function.
(c) Insert and turn the mechanical key in the keyhole of the
door.
INFORMATION

To maintain communication with the vehicle,
electronic keys use builtin battery power. The
battery service life is about 1 to 2 years on average.
If battery power becomes insufficient, replace the
battery with a new one.
 The electronic key continually receives
electromagnetic waves, and if it receives strong
electromagnetic waves over a period of time, the
battery can be drastically run down. Therefore, avoid
storing electronic keys near any electrical
appliances.
Here is a list of electrical appliances which may have
adverse effects on the electronic key performance:
TVs, personal computers, cellular phone or cordless
phone recharger units, electric light stands and
fluorescent desk lights
Note that you should always keep such electrical
appliances at least 1 m (3 ft.) away from the electronic
key.

KEYS AND DOORS
27
STARTING THE ENGINE WHEN THE ELECTRONIC KEY
BATTERY IS DISCHARGED
If the electronic key battery is discharged, the engine can
be started using the following procedure.
1. Unlock the door with the
mechanical key and bring the
electronic key into the vehicle.
G11038
2. While the brake pedal is depressed, hold the ornament side
of the electronic key about 10 mm (0.4 in.) over the engine
switch as shown.
3. Within 5 seconds of the chime sounding, push the engine
switch with the brake pedal depressed to start the engine.
When you push the engine switch with the brake pedal not
depressed at this time, the engine will not start, but it is possible
to select “ACC”, “IG− ON” and “OFF” mode.
If it is not possible to start the engine or change the mode using
this procedure, contact your Lexus dealer. In addition, we recommend that the electronic key battery be
changed as soon as possible.
For vehicles sold in U.S.A.
FCC ID: NI4TMLF1
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 interference,
and (2) this device must accept any interference re-
ceived, including interference that may cause unde-
sired operation.
CAUTION
Changes or modifications not expressly approved by
the party responsible for compliance could void the
user’s authority to operate the equipment.

KEYS AND DOORS
29
The operational range of the wireless remote control is
approximately 1 meter (3 ft.). The effective range may vary
with different conditions. To activate the wireless remote
control
without fail, do it approximately 1 meter (3 ft.) from your
Lexus.
In the following cases, the battery in the electronic key may be
discharged.
 The message “LOW KEY BATTERY” appears on the
multi−information display.
 The remote control does not work.
 The operational range of wireless remote control becomes
extremely short.
 The indicator light on the electronic key is dimmed or does
not come on.
For the replacement of the battery, see ”Replacing the battery”
on page 33. You can also have the battery of the key replaced
by your Lexus dealer.
If you lose the electronic key, contact your Lexus dealer
immediately to avoid the possibility of theft, or an accident.
You can use up to 7 electronic keys for the same vehicle.
Contact your Lexus dealer for detailed information. The electronic key is an electronic component. Observe
the following instructions in order not to cause damage to
the electronic key.

Do not leave the electronic key in places where the
temperature becomes high such as on the dashboard.
 Avoid knocking it hard against other objects or dropping it.
 Avoid putting it in water.

KEYS AND DOORS
33
Consult the dealer or an experienced radio / TV techni-
cian for help.
FCC WARNING:
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user’s authority to operate the equipment.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1)
this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of the
device.
REPLACING THE BATTERY
When you replace the battery, prepare a lithium battery
CR1632 or equivalent and flathead screwdrivers. However, if
the inner parts are touched or the electronic key is dropped, it
will not function properly. We recommend you to have an
electronic key battery replaced by your Lexus dealer.
CAUTION
Special care should be taken to prevent small children
from swallowing the removed battery or components.
NOTICE
 Do not touch the components in an electronic key
with your hand. It may cause static electricity to
occur, and an electronic key will be broken.
 When replacing the electronic key battery, be careful
not to lose components.
 Replace only with the same or equivalent type
recommended by a Lexus dealer.
 Dispose of used batteries according to the local laws.

KEYS AND DOORS
34
G11034
1. After taking out the mechanical key, insert the flathead
screwdriver into the space, and turn it.
G11035
2. Using a screwdriver of smaller diameter, insert the
screwdriver with the gap and remove the battery.
G11036
3. After placing the battery in the slot at an angle, with the
positive side facing up, press down on the battery and ensure
it is properly in place.
G11037
4. Replace the cover by pressing down in the order of 1
and 2 as shown in the illustration.

KEYS AND DOORS
35
NOTICE
Make sure the positive side and negative side of the
battery are faced correctly.
 Do not replace the battery with wet hands. Water may
cause unexpected rust.
 Do not touch or move any components inside the
transmitter, or it may interfere with proper operation.
 Be careful not to bend the electrode when inserting
the battery and that dust or oils do not adhere to the
inside of the module.
5. After replacing the battery, be sure to return the mechanical
key to its original position.
DOORS
See page 19 for locking the doors with entry function and
page 22 for unlocking them with entry function.
Locking with a mechanical key
G11001
 1 Lock 2Unlock
Turn the mechanical key towards the front of the vehicle
to lock and towards the back to unlock.
The doors lock and unlock simultaneously with the driver’s
door. T urning the mechanical key once will unlock the driver’s
door and twice in succession will unlock all doors
simultaneously.*
NOTE:
*The 2step unlocking function can be changed.
Ask your Lexus dealer for details.

KEYS AND DOORS
40
Locking with rear door childprotector
G11004
 1Unlock 2Lock
Whenever small children are in the vehicle, lock the rear
door so that it does not open by the inside door handle.
To do this, turn the knob to the lock position as shown and
then close the door.
THEFT DETERRENT SYSTEM
G11005
To deter theft of the vehicle, this system is designed to
sound an alarm if any of the doors, trunk or hood is
forcibly unlocked or opened, or the battery terminal is
disconnected and then reconnected while the vehicle is
locked.
The alarm blows the horn intermittently, flashes the headlights,
tail lights, turn signal lights and other exterior lights. When the
interior light switch is in the “DOOR” position, the interior lights
also turn on.
After the alarm is activated, when you unlock any door or the
trunk using a entry function, wireless remote control or
mechanical key, the tail lights turn on for about 2 seconds to
inform you that the system was activated.