2006 Lexus GS430 battery replacement

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.

EXTERIOR EQUIPMENT
135
CAUTION
Make sure the cap is installed securely to prevent fuel
spillage in the event of an accident.
 Use only a genuine Lexus fuel tank cap for
replacement. It is designed to regulate fuel tank
pressure.
NOTICE
To prevent damage to the cap, apply force only in the
turning direction to the cap. Do not pull or pry it.
In case the opener is not actuated
G15021
Remove the cover and pull up the manual lever in the
trunk.
This is used in case the fuel filler door cannot be opened due
to a discharged battery or other trouble.

STARTING AND DRIVING
438
BRAKE PAD WEAR LIMITINDICATORS
G31006
The brake pad wear limit indicators on your disc brakes
give a warning noise when the brake pads are worn to the
extent that replacement is required.
If you hear a squealing or scraping noise while driving, have
the brake pads checked and replaced by your Lexus dealer as
soon as possible. Expensive rotor damage can result if the
pads are not replaced when needed.
GS430 front brake only—
The high brake performance is achieved by proper wear of
brake pads and discs. As a result, the brake discs may wear
earlier than the ones on the conventional brake system.
When brake pads are replaced, brake disc thickness is
required to be measured.
It is dangerous to continue driving when brake pads and discs
have exceeded the wear limit.
ELECTRIC POWER STEERING SYSTEM
The electric power steering system, using an electric
motor, assists the turning of the steering wheel.
In the following cases, you may feel the steering becomes
heavy. However, the electric power steering system
warning light does not come on. (Because it is not a
malfunction.)
When maneuvering or turning frequently over a long time, the
power steering effect will be reduced to prevent the system
from overheating. A void turning the steering wheel, or stop the
vehicle. The system will become cool in about 10 minutes.
NOTICE
Frequent maneuvering and turning over a long time may
cause damage to the system in which the mechanism
prevents overheating of the electric power steering
system.
When the battery is discharged, check the battery’s condition.
If necessary, recharge or replace the battery. For details, see
“Checking battery condition” on page 581.

IN CASE OF AN EMERGENCY
472
CAUTION
When making the connections, to avoid serious injury,
do not lean over the battery or accidentally let the
jumper cables or clamps touch anything except the
correct battery terminals or the ground.
5. Charge the discharged battery with the jumper cables
connected for approximately 5 minutes. At this time, run the
engine in the vehicle with the booster battery at about 2000
rpm with the accelerator pedal lightly depressed.
6. Start your engine in the normal way. After starting, run it at
about 2000 rpm for several minutes with the accelerator pedal
lightly depressed.
7. Carefully disconnect the cables in the exact reverse order:
the negative cable and then the positive cable.
8. Carefully dispose of the battery cover cloths which may now
contain sulfuric acid.
9. If removed, replace all the battery vent plugs.
The engine may not restart even after battery charging or
replacement. If this happens, see “(d) Starting the engine after
a battery discharge”.
If the cause of your battery discharging is not apparent (for
example, lights left on), you should have it checked at your
Lexus dealer. If the first start attempt is not successful...
Check
that the clamp on the jumper cables are tight. Recharge
the discharged battery with the jumper cables connected for
several minutes and restart your engine in the normal way.
If another attempt is not successful, the battery may be
depleted. Have it checked at your Lexus dealer.(d) Starting the engine after a battery discharge
In the event that the battery is discharged, the engine may
not restart even after the battery is recharged or replaced.
For safety reasons, the engine may be disabled when
battery voltage is extremely low. If the engine is disabled,
the start system must be normalized.
To normalized the start system:
1. Shift the transmission to the “P” position and set the engine
switch off.
2. Open and close any of the doors.
3. Start the engine.

INTRODUCTION
516
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform
do−it−yourself maintenance. Remember all Lexus parts are
designed in metric sizes, so your tools must be metric.
Checking the engine oil level
Parts (if level is low):
“Toyota Genuine Motor Oil” or equivalent
Oil grade: ILSAC multigrade engine oil. For recommended
oil viscosity, see page 533.
Tools:
 Rag or paper towel
 Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):
”Toyota Super Long Life Coolant” or similar high quality
ethylene glycol based non −silicate, non −amine, non −nitrite,
and non −borate coolant with long −life hybrid organic acid
technology.
“Toyota Super Long Life Coolant” is a mixture of 50%
coolant and 50% deionized water (for the U.S.A.) or 55% of
coolant and 45% deionized water (for Canada).
Tools:
 Funnel (only for adding coolant)
Checking brake fluid
Parts (if level is low):
FMVSS No. 116 DOT 3 or SAE J1703 brake fluid
Tools:
 Funnel (only for adding fluid)
Checking battery condition
Tools:
Warm water
 Baking soda
 Grease
 Conventional wrench (for terminal clamp bolts)
Checking and replacing the blade type fuses
Parts (if replacement is necessary):
Fuse with same amperage rating as original
Checking the cartridge type fuses
Parts (if replacement is necessary):
Genuine Lexus fuse or equivalent with same amperage
rating as original

ELECTRICAL COMPONENTS
588
64g104
Good Blown
If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge type fuses. If any of the cartridge type fuses are
blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.
CAUTION
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire even for
a temporary fix. This may cause extensive damage and
possibly a fire.
NOTICE
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.