1995 Lexus LS400 lexus LS400 1995 Air Conditioning and Audio / 1995 LS400: ELECTRICAL COMPONENTS

ELECTRICAL COMPONENTS
227 Determine which fuse may be causing the problem. The lid of
the fuse box shows the name of the circuit for each fuse.
2. Make sure the inoperative component is turned off. Pull
the suspected fuse straight out with the pull−out tool and
check it. If it has blown, push a new fuse into the clips.
a. Look carefully at the fuse. If the thin wire is broken, the fuse
has blown. If you are not sure or if it is too dark to see, try
replacing the suspected fuse with one of the same value that
you know is good.
b. Only install a fuse with the amperage rating designated on
the fuse box lid.

Good
Blown
If you do not have a spare fuse, in an emergency you can pull
out the “RADIO NO.1”, “MIR HTR” or “DOME RR” fuse, which
may be dispensable for normal driving, and use it if its
amperage rating is the same.
If you cannot use one of the same amperage, use one lower
than, but as close as possible to, the amperage. If the
amperage is lower than that specified, the fuse might blow out
again but this does not indicate anything wrong. Be sure to get
the correct fuse as soon as possible and return the substitute
to its original clips.
It is a good idea to purchase a set of spare fuses and keep them
in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with
the electrical system. Have your Lexus dealer correct it as
soon as possible.

ELECTRICAL COMPONENTS
228
CAUTION
Never use a fuse with a higher amperage rating, or any
other object, in place of a fuse. This may cause
extensive damage and possibly a fire.
CHECKING THE CARTRIDGE TYPE
FUSES

1
Good 2
Melted
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.
NOTICE
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer.

ELECTRICAL COMPONENTS
229
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.
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.

ELECTRICAL COMPONENTS
230
CHECKING THE HEADLIGHT AIM

1
Beam angle gauge (vertical movement)
2
Beam angle gauge (horizontal movement)
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.

1
Bubble 2
Acceptable range
Vertical movement gauge: The bubble of the gauge should
not deviate from the center of the gauge by more than four
marks to either side of the gauge.

ELECTRICAL COMPONENTS
231

1
Mark 2
Acceptable range
Horizontal movement gauge: The mark should not deviate
by more than two marks to either side of the gauge.
If the error is over the value specified above, take the vehicle
to your Lexus dealer to adjust the headlight aim.
REPLACING LIGHT BULBS
The illustration 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.
CAUTION
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.
NOTICE
Only use a bulb of the listed type.

ELECTRICAL COMPONENTS
232LIGHT LOCATION
Light Bulbs Bulb No. W Type
1 Headlights (High beam) HB3 60 A
2 Headlights H4 60 / 55 B
(High and low beam)
3 Fog lights HB4 51 C
4 Parking lights — 5 D
5 Front turn signal lights 1156 21 F
6 Front side marker lights — 3.8 D
Light Bulbs Bulb No. W Type
7 High mounted stoplight 921 18 D
8 License plate lights — 5 D
9 Back−up lights — 21 D
10 Stop and tail lights — 21 / 5 D
11 Rear turn signal lights — 21 D
12 Rear side marker lights — 5 D

ELECTRICAL COMPONENTS
233
Light Bulbs Bulb No. W Type
13 Front personal lights — 8 F
14 Front interior light — 8 E
15 Rear interior light — 8 D
Rear personal light — 5 F
16 Vanity lights — 3 E
17 Glovebox light — 1.2 D
18 Footlights — 1.4 D
19 Door courtesy lights 194 3.8 D
20 Trunk light 194 3.8 D
A: HB3 halogen bulbs
B: H4 halogen bulbs
C: HB4 halogen bulbs
D: Wedge base bulbs
E: Double end bulbs
F: Single end bulbs