2006 Lexus GS300 battery

SECTION 6 – 4
563
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications564 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition571 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions574 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses574 . . . . . . . . . . . . . . . .
Checking the cartridge type fuses577 . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid579 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim579 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs584 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
571
No.FUSEAMPERECIRCUIT
97 STOP LP R10High mounted stoplights
98 RR TAIL10License plate lights, Tail lights,
Rear side marker lights
CHECKING BATTERY CONDITION
Precautions
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and explosive
hydrogen gas.
Do not cause a spark by contacting the battery
terminals with tools.
Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive
sulfuric acid.
Avoid contact with eyes, skin or clothes.
Never inhale or swallow electrolyte.
Wear protective safety glasses when working near
the battery.
Keep children away from the battery.
EMERGENCY MEASURES
If electrolyte gets in your eyes, flush your eyes with
clean water for at least 15 minutes and get immediate
medical attention. If possible, continue to apply
water with a sponge or cloth while traveling to the
medical office.

ELECTRICAL COMPONENTS
572
If electrolyte gets on your skin, thoroughly wash the
contacted area. If you feel a pain or burn, get medical
attention immediately.
If electrolyte gets on your clothes, there is a
possibility of its soaking through to your skin, so
immediately take off the exposed clothing and follow
the procedure above, if necessary.
If you accidentally swallow electrolyte, drink a large
quantity of water or milk. Follow with milk of
magnesia, beaten raw egg or vegetable oil. Then go
immediately for emergency help.Checking battery exterior
G64008

1
Terminals 2
Hold−down clamp
Check the battery for corroded or loose connections,
cracks, or loose hold−down clamps.
1. If the battery is corroded, wash it off with a solution of warm
water and baking soda. Coat the terminals with grease to
prevent further corrosion.
2. If the connections are loose, tighten the clamp bolts − but do
not overtighten.
3. Tighten the hold−down clamp only enough to keep the
battery firmly in place. Overtightening may damage the battery
case.

ELECTRICAL COMPONENTS
573
NOTICE
Make sure the engine and all accessories are turned
off before performing maintenance.
When checking the battery, remove the ground cable
first and reinstall it last.
Be careful not to cause a short circuit with tools.
Take care no solution gets into the battery when
washing it.
If the battery is disconnected or run down
The following functions may not operate correctly when you
reconnect or replace the battery. In these cases, you should
normalize each system referring to the following pages.
Power windows (See page 59.)
Moon roof (See page 134.)
Variable gear ratio steering system (See page 424.)
Intuitive parking assist (See page 380.)
Checking battery condition
Checking by indicator
G64009
Check the battery condition by the indicator color.
1
BLUE − Good condition.
2
WHITE − Charging necessary. Have the battery checked
by your Lexus dealer.
3
RED − Have the battery checked by your Lexus dealer.
NOTICE
Do not refill the battery with water.

ELECTRICAL COMPONENTS
574
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen
gas.
Therefore, before recharging:
1. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.
2. Make sure the power switch on the recharger is off when
connecting the charger cables to the battery and when
disconnecting them.
CAUTION
Always charge the battery in an unconfined area. Do
not charge the battery in a garage or closed room
where there is not sufficient ventilation.
Only do a slow charge (5 A or less). Charging at a
quicker rate is dangerous. The battery may explode
causing personal injuries.
NOTICE
Never recharge the battery while the engine is running.
Also, be sure all accessories are turned off.
CHECKING AND REPLACING THE
BLADE TYPE FUSES
G64010

Left side kick panel
G64011

Right side kick panel

ELECTRICAL COMPONENTS
578
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.