battery lexus LS400 1994 Engine / 1994 LS400: ELECTRICAL COMPONENTS

SECTION 6 – 4
217
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications218 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition and fluid level222 . . . . . . . . . . . . . . . . . . .
Battery recharging precautions224 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses224 . . . . . . . . . . . . . . . .
Checking the circuit breakers226 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the cartridge type fuses226 . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the windshield wiper blades227 . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs231 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
222
CHECKING BATTERY CONDITION
AND FLUID LEVEL
CAUTION:
BATTERY PRECAUTIONS
The battery produces a 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 en route to the medical
office.
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 happen to 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.
Extended maintenance
interval batteryHold-down clamp
Terminals
1. Check the battery for corroded or loose connections,
cracks, or loose hold-down clamps.
a. 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.

ELECTRICAL COMPONENTS
223 b. If the connections are loose, tighten the clamp bolts − but
do not overtighten.
c. Tighten the hold-down clamp only enough to keep the
battery firmly in place. Overtightening may damage the battery
case.
NOTICE:

Make sure the engine and all accessories are turned
off before performing maintenance.

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 batery when
washing it.
Blue
Red
White
2. Check the indicator as shown.
BLUE − Good condition.
RED − Add distilled water.
WHITE − Charging necessary.If the indicator is red, check the electrolyte level as shown.
a. When checking the electrolyte level, remove the vent plugs
and look at all six cells, not just one or two.
b. Replenish the battery with distilled water.
c. After replenishing, be sure to securely retighten the vent
plugs.
NOTICE:

Do not overfill the battery or the electrolyte may squirt
out of the battery during periods of heavy charging,
causing corrosion or damage.

In order to maintain full engine performance and to
make sure the cover fits the battery, when replacing
the battery use an Exide Group 27F CCA580A battery
or equivalent performance battery.

Use a cover on the battery for longer life.

ELECTRICAL COMPONENTS
224
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen
gas.
Therefore, before recharging:
1. Remove the vent plugs.
2. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.
3. Be 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 insufficient ventilation.
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
Driver’s side kick panel
Engine compartment
Spare fuses
Pull-out tool
1. Turn the ignition switch off and open the fuse box lid.

ELECTRICAL COMPONENTS
226
CHECKING THE CIRCUIT
BREAKERS
Driver’s side
kick panel
Circuit breakers
In the event the defogger, air conditioning, power
windows, power door locks, or moon roof does not
operate, check its circuit breaker (C
.B).
To reset the circuit breaker, first turn the ignition switch off and
carefully insert a thin object, such as a toothpick, needle or
safety pin, into the hole in the circuit breaker and push until you
hear a click. The component should now operate. This may be
done without removing the circuit breaker.
If the circuit breaker immediately goes off again or the
component does not operate, turn off the component switch
and have the electrical system checked by your Lexus dealer
as soon as possible.
CHECKING THE CARTRIDGE TYPE
FUSES
GoodMelted
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
melted, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to melt before the entire wiring harness is
damaged.
NOTICE:
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.
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.