2006 Lexus GS430 key battery

KEYS AND DOORS
12If 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 357. In order to activate the entry function
and wireless remote control, the battery should be replaced.
For details, see “Replacing the battery” on page 34.
(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
14For 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 20.)
 Unlocking the door(s)
(For details, see page 23.)
 Changing the doors to be unlocked
(For details, see page 24.)
 Unlocking the trunk lid
(For details, see page 26.)
 Battery power saving
(For details, see page 27.)
NOTE:
*These functions can be deactivated.
Ask your Lexus dealer for details.

KEYS AND DOORS
19
Inside 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
27
INFORMATION
If you close the trunk lid while an electronic key is left
in the trunk and all doors are locked, an alarm should
be activated. However, if the electronic key is placed
near the spare tire or at the edge of the trunk, or if the
electronic key is in a metallic bag, the trunk lid might
not be unlocked.
 If you accidentally lock an electronic key in the trunk
when all doors are locked, be aware that anyone can
unlock the trunk by pushing the trunk button.
 Even when the electronic key is outside the trunk, an
alarm still might be activated if the electronic key is
near the trunk. However, if you have the electronic
key, there is no problem.
BATTERY 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.

KEYS AND DOORS
28
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.
ANTENNA LOCATIONS
1 Antennas outside cabin
2Antennas inside cabin
3Antenna outside trunk
4Antenna inside trunk

KEYS AND DOORS
30The 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 34. 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
34
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
35
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.