car battery Lexus GS430 2006 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2006 PROD. OWNER'S MANUAL (OM30786U)

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
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
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
36
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 20 for locking the doors with entry function and
page 23 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.

SWITCHES
58
REAR WINDOW AND OUTSIDE
REAR VIEW MIRROR DEFOGGER SWITCH
G12011
To turn the electric rear window and outside rear view
mirror defogger on, push the switch.
The engine switch must be selected in “IG −ON” mode.
The thin heater wires on the inside of the rear window and the
heater panels in the outside rear view mirrors will quickly clear
the surface. Keep your hands off the mirror faces when the
switch is on. An indicator light is on when the defogger is
operating.
The system will automatically shut off when the defogger has
operated about 15 minutes.
CAUTION
Since the mirror surfaces can get hot, do not touch them
when the switch is on.
If further defrosting or defogging is desired, simply actuate the
switch again. W hen the surface has cleared, push the switch
once again to turn the defogger off. Continuous use may cause
the battery to discharge, especially during stop− and−go
driving. The defogger is not designed to dry rain water or to
melt snow.
If the outside rear view mirrors are heavily coated with ice, use
a spray de −icer before operating the switch.
NOTICE
 When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires or
connectors.
 To prevent the battery from being discharged, turn
the switch off when the engine is not running.

INTERIOR EQUIPMENT
111
G14009a
Rear ashtray
To use the ashtray, open the cover.
When finished with your cigarette, thoroughly extinguish it in
the ashtray to prevent other cigarette butts from catching fire.
After using the ashtray, close the lid completely.
To remove the ashtray, press down on the lock spring plate and
pull it out.
CAUTION
To reduce the chance of injury in case of an accident or
sudden stop while driving, always close the ashtray
cover completely after use.
POWER OUTLET
G14010
The power outlet is designed for power supply for car
accessories.
The power outlet is located in the rear console box.
The power outlet works when “ACC” or “IG −ON” mode is
selected.
NOTICE
 To prevent the fuse from being blown, do not use the
electricity over the total vehicle capacity of
12V/120W.
 To prevent the battery from being discharged, do not
use the power outlet longer than necessary when the
engine is not running.

OCCUPANT RESTRAINT SYSTEMS
203
Conditions for memorized position activation

Engine switch in “IG−ON” mode and selector lever in ”P”
position, with the vehicle stopped.
 Engine switch in “OFF” mode and within 30 seconds of
opening driver’s door.
The memorized position can be activated, except for the tilt
and telescopic steering.
If any driving position memory switch is pushed while one of
the memorized driving position profiles is being activated, the
operation will stop.
To activate the system, push the desired button (“1”, “2” or \
“3”)
again.
The driving position memory control system cannot be
operated while the vehicle is moving.
If the vehicle’s battery is disconnected, the computer’s
memory will be erased and the memorized positions will have
to be set again.
CAUTION
 Do not start the vehicle while the adjustments are
being made.
 Take care not to select the wrong button, or the seat
could strike the rear passenger or hit your body
against the steering wheel. If this happens, you can
stop the movement by pressing another driving
position memory switch.
MEMORY RECALL FUNCTION
You can recall the memorized position using the entry
function or wireless remote control.
If you unlock the door using the entry function or wireless
remote control, the memorized seat position is recalled when
the driver’s door is opened. The memorized steering wheel
position will be recalled when you push the engine switch.
This function can be used after setting by the following
procedure.
Setting the driving position onto the electronic key
The driver’s door must be closed with the engine switch turned
off.
1. Push and hold the previously memorized driving position
button “1”, “2” or “3”.
2. While depressing the button above, push and hold the
“LOCK” or “UNLOCK” button on the electronic key until a beep
sounds.
If you wish to set other driv ing position, repeat the above
procedure. The previous setting will be erased and the new
position will be set.
Resetting the driving position on the electronic key
The driver’s door must be closed with the engine switch turned
off.
1. Push and hold the “SET” button.
2. Push and hold the “LOCK” or “UNLOCK” button on the
electronic key until two beeps sound.

OCCUPANT RESTRAINT SYSTEMS
205
Conditions for memorized position activation

Engine switch in “IG−ON” mode and selector lever in ”P”
position, with the vehicle stopped.
 Engine switch in “OFF” mode and within 30 seconds of
opening front passenger’s door.
If any seat position memory switch is pushed while one of the
memorized seat position profiles is being activated, the
operation will stop.
To activate the system, push the desired button (“1”, “2” or \
“3”)
again.
The seat position memory control system cannot be operated
while the vehicle is moving.
If the vehicle’s battery is disconnected, the computer’s
memory will be erased and the memorized positions will have
to be set again.
CAUTION
 Do not start the vehicle while the adjustments are
being made.
 Take care not to select the wrong button, or the seat
could strike the rear passenger . If this happens, you
can stop the movement by pressing another driving
position memory switch.

STARTING AND DRIVING
431
VARIABLE GEAR RATIO STEERING SYSTEM (GS430 only)
The variable gear ratio steering system adjusts the wheel
turning angle depending on the vehicle speed and how
much you turn the steering wheel.
The vehicle wheel turning angle will be changed with a smaller
degree of wheel maneuvering when you are driving at very low
speed such as when putting your vehicle into a garage.
When you start or stop the engine, you may hear a small noise
and the steering wheel may move slightly. This is caused when
the system starts or stops, and does not indicate a malfunction.
In the following cases, to prevent the system from overheating,
the system could be temporarily deactivated with the change
in the center position of the steering wheel. This is not a
malfunction. After the cause of the problem is eliminated, the
system will return to normal automatically after a few minutes.
 If you continue maneuvering the steering wheel when the
vehicle is stopped or running at very low speed
 If you continue driving holding the steering wheel to the
extreme right or left
 If you maneuver the steering wheel immediately after
starting the engine at less than about −30C (− 22F) While the system is not functioning, a larger degree of wheel
maneuvering is needed during driving at low speed. If the
center position of the steering wheel is changed frequently,
have your vehicle inspected at your Lexus dealer.CAUTION
Take due care especially when driving at low speed as
the vehicle changes direction in greater proportion to
the steering wheel maneuvering.
NOTICE
Do not disconnect the battery with the steering wheel
turned, or the center position of the steering wheel
could be slightly and temporarily changed. However,
after driving for a short while, the system will return to
normal
and the center position of the steering wheel will
be in the appropriate position.
If you disconnect and reconnect the battery terminal, the
system is reset temporarily. However, it is no problem to drive.
Drive for a short while, the system will be set automatically and
return to normal.

IN CASE OF AN EMERGENCY
471
G40027
GS300 5
Discharged battery 6Booster battery
GS300 only—Before carrying out the following procedure,
remove the engine compartment cover. (See page 512.)
JUMP STARTING PROCEDURE
1. If the booster battery is installed in another vehicle, make
sure the vehicles are not touching. Turn off all unnecessary
lights and accessories. When boosting, use the battery of matching or higher quality.
Any other battery may be difficult to jump start with.
If jump starting is difficult, charge the battery for several
minutes.
2. If required, remove all the vent plugs from the booster
battery. Lay a cloth over
the open vents on the booster battery.
(This helps reduce the explosion hazard, personal injuries and
burns.)
If the booster battery is an extended maintenance interval
battery, it is not necessary to remove the vent plugs.
3. If the engine in the vehicle with the booster battery is not
running, start it and let it run for about 5 minutes. During jump
starting, run the engine at about 2000 rpm with the accelerator
pedal lightly depressed.
4. Locate positive (+) and negative ( −) terminals of each
battery. Connect the jumper cables in the exact order (
1 2
3 4) shown in the illustration.
1 Connect a positive (red) jumper cable clamp to the
positive (+) terminal of the discharged battery.
2Connect the clamp at the other end of the positive (red)
cable to the positive (+) terminal of the booster battery.
3Connect a negative (black) cable clamp to the negative
(−) terminal of the booster battery.
4Connect the clamp at the other end of the negative (black)
cable to a solid, stationary, unpainted metallic point (such
as shown in the illustration) away from the battery. Do not
connect it to or near any part that moves when the engine
is cranked.