Lexus GS300 1999 Electrical Components

ELECTRICAL COMPONENTS
449
64G005±2

Engine compartment 1Spare fuses
2Pull±out tool
64G027

ELECTRICAL COMPONENTS
450

Engine compartment (Canada only)
1. Turn the ignition switch off and open the fuse box
lid.
Determine which fuse may be causing the problem. The
lid of the fuse box shows the name of the circuit for each
fuse.
64L013
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.

ELECTRICAL COMPONENTS
451
64G008

Good
Blown
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. Install only a fuse with the amperage rating
designated on the fuse box lid.
If you do not have a spare fuse, in an emergency you can
pull out the ºCIGº, ºRAD NO.1º or ºOBDº 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
452
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.

ELECTRICAL COMPONENTS
453
CHECKING THE CARTRIDGE
TYPE FUSES
64G019±1

ELECTRICAL COMPONENTS
454

1Good 2Melted
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.
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.

ELECTRICAL COMPONENTS
455
ADDING WASHER FLUID
64G009
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

ELECTRICAL COMPONENTS
456
64G020b

1Beam angle gauge (vertical movement)
2Beam 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.
Adjusting the headlight aiming

ELECTRICAL COMPONENTS
457
64g059

1Adjusting bolt A
2Adjusting bolt B

ELECTRICAL COMPONENTS
458
64G021a

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.