1999 Lexus GS300 charging

SECTION 6 ± 4
429
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications 430. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition439 . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions446 . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses448 . . . . .
Checking the cartridge type fuses453 . . . . . . . . . . . . . . .
Adding washer fluid455 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim455 . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs459 . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
437
37 TEL15No circuit
38 TURN±HAZ10Turn signal lights
No.FUSEAMPERECIRCUIT
39 EFI25
Multiport fuel injection
system/sequential multiport fuel
injection system, Emission
control system
40 ALT±S5Charging system
41 RADIO
NO.120Audio
42 DRL NO.230Vehicles with daytime
running light system:
Daytime running light system
43 H±LP L
UPR10
Vehicles without daytime
running light system:
Left±hand headlight (high
beam)
44
H±LP R
UPR10
Vehicles without daytime
running light system:
Right±hand headlight (high
beam)
44
DRL NO.130Vehicles with daytime
running light system:
Daytime running light system
45 H±LP L
LW R15Left±hand headlight (low beam)
46 H±LP R
LW R15Right±hand headlight (low
beam)

ELECTRICAL COMPONENTS
444
64G003a
Check the battery condition by the hydrometer
color.
Maintenance type battery
1
BLUE ± Good condition.
2
WHITE ± Charging necessary. Have the battery
checked by your Lexus dealer.
3
RED ± Add distilled water. (See ºAdding distilled
waterº described below.)
Non±maintenance type battery
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
For non±maintenance battery:
Do not refill the battery with water.
Adding distilled water
(Maintenance type battery only)

ELECTRICAL COMPONENTS
445
64L062

1Low 2O.K.
1. Remove the vent plugs.
2. Add distilled water to cells needing fluid.
If the side of your battery is covered, check the water
level by looking down directly above the cell as
illustrated above.
3. Retighten the vent plugs securely.NOTICE
Do not overfill the cells. Excess electrolyte
could squirt out of the battery during heavy
charging, causing corrosion or damage.
Use a cover on the battery for longer life.

ELECTRICAL COMPONENTS
446
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing
hydrogen gas.
Therefore, before recharging:
1. Maintenance type batteries ± Remove the vent plugs.
2. If recharging with the battery installed on the vehicle,
be sure to disconnect the ground cable.
3. 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.
Non±maintenance batteries: Only do a slow charge
(5 A or less). Charging at a quicker rate is dangerous.
The battery may explode causing personal injuries.
Maintenance type batteries: Be sure to remove the
vent plugs before recharging.