Page 604 of 632

ELECTRICAL COMPONENTS
580
No.FUSEAMPERECIRCUIT
70 A/F15Multi−port fuel injection
system/sequential multiport fuel
injection system
71 ETCS10Multi−port fuel injection
system/sequential multiport fuel
injection system
72 ALT S7.5Charging system
73 EM VLV10No circuit
74 H LP CLN30Headlight cleaner system
75 A/C COMP7.5Air conditioning system
76 DEICER25No circuit
77 FR
CTRL AM30“FR TAIL”, “FR FOG” and
“WASHER”
78 IG210Starting system
79 EFI NO.210
Multi− port fuel injection
system/sequential multiport fuel
injection system, Evaporative
system
80 H LP R
LW R15Right− hand headlight (low
beam)
81 H LP L
LW R15Left− hand headlight (low beam)
82 F/PMP25Fuel pump
No.FUSEAMPERECIRCUIT
83 EFI
GS430:
20
GS300: 25Multi− port fuel injection
system/sequential multiport fuel
injection system
84 INJ20Multi− port fuel injection
system/sequential multiport fuel
injection system
85 H LP UPR15Headlights (high beam)
86 HORN10Horn
87 WASHER20Windshield wipers and washer
88 FR TAIL10Parking lights, Side marker
lights
89 FR FOG15Front fog lights
90 RR
S/SHADE7.5Rear electric sunshade
91 PSB30Pre− collision system
92 RR IG210No circuit
93 RR IG110Pre− collision system, Rear
electric sunshade, Seat belt
pretensioners
94 RR B10Luggage compartment light,
Noise filter
95 RR FOG7.5Rear fog lights
96 STOP LP L10Stoplights, Back up lights
Page 605 of 632
ELECTRICAL COMPONENTS
581
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.
Page 612 of 632
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.
Page 613 of 632

ELECTRICAL COMPONENTS
589
ADDING WASHER FLUID
If the washer tank becomes nearly empty, add washer
fluid.
You may use plain water as washer fluid. However, in cold
areas where temperatures range below the freezing point, use
washer fluid containing antifreeze. This product is available at
your Lexus dealer and most auto parts stores. Follow the
manufacturer’s directions for how much to mix with water.
NOTICE
Do not use engine antifreeze or any other substitute
because it may damage your vehicle’s paint.
CHECKING THE HEADLIGHT AIM
G64020
1 Beam angle gauge
(horizontal movement for high beam)
2 Beam angle gauge
(vertical movement for high beam)
3 Beam angle gauge
(vertical movement for low beam)
4 Beam angle gauge
(horizontal movement for low beam)
Before checking the headlight aim:
1. Be sure that the body around the headlight is not deformed.
2. Park the vehicle on a level spot.
3. The driver gets into the driver’s seat and puts the vehicle in
a state readying for a driving (with a full tank).
4. Bounce the vehicle several times.
Page 614 of 632
ELECTRICAL COMPONENTS
590
Adjusting the headlight aiming (low beam)
G64021
1Adjusting bolt A
2Adjusting bolt B
G64022
1Bubble 2Acceptable range
Vertical movement gauge: The bubble of the gauge should
not deviate from the center of the gauge by more than 2 marks
to either side of the gauge.
If the bubble is out of the acceptable range of the beam angle
gauge, adjust it using bolt A and B.
Page 615 of 632
ELECTRICAL COMPONENTS
591
G64023
1. Turn the bolt A in either direction using a Phillips−head
screwdriver. At this time, k eep the turning direction and
number of turns in mind.
G64024
2. Turn the bolt B the same number of turns and in the same
direction as step 1 using a Phillips− head screwdriver.
If you do not know or cannot find the original position, or if you
feel that there is a large deviation, take the vehicle to your
Lexus dealer to adjust the headlight aim.
After adjusting the headlight in the vertical direction, check that
the light has been shifted from the adjusted position in the
horizontal direction.
Page 616 of 632
ELECTRICAL COMPONENTS
592
Adjusting the headlight aiming (high beam)
G64025
1Adjusting bolt A
2Adjusting bolt B
G64026
1Bubble 2Acceptable range
Vertical movement gauge: The bubble of the gauge should
not deviate from the center of the gauge by more than 2 marks
to either side of the gauge.
If the bubble is out of the acceptable range of the beam angle
gauge, adjust it using bolt A.
Page 618 of 632

ELECTRICAL COMPONENTS
594
G64028
Turn the bolt B in either direction using a Phillips−head
screwdriver.
If you do not know or cannot find the original position, or if you
feel that there is a large deviation, take the vehicle to your
Lexus dealer to adjust the headlight aim.
REPLACING LIGHT BULBS
The illustrations on the following pages show the locations of
light bulbs. If it is necessary to replace a bulb, take your vehicle
to your Lexus dealer as soon as possible. Use bulbs with the
bulb numbers and wattage ratings given in the table.
The tail lights, stop lights, high mounted stoplight and rear side
marker light consist of a number of LEDs. If any of the LEDs
burn out, take your vehicle to your Lexus dealer to have the
light replaced.
If two or more LEDs in a stoplight burn out, your vehicle may
not conform to local laws (SAE).
CAUTION
To prevent burning yourself, do not replace the light
bulbs while they are hot.
Halogen bulbs have pressurized gas inside and
require special handling. They can burst or shatter if
scratched or dropped. Hold a bulb only by its plastic
or metal case. Do not touch the glass part of a bulb
with bare hands.
Do not touch the (High intensity discharge
headlight’s) high voltage socket when the headlights
are turned on. An extremely high voltage of 20,000 V
will be discharged and could result in serious injury
or death by electric shock.