maintenance LEXUS LS430 2006 Manual PDF

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Cartridge fuses
■If there is an overload in the circuits from the battery
The fuses are designed to blow before the wiring harness is damaged.
If the headlights or other electrical components do not work and the blade
fuses are O.K., check the cartridge fuses.
■ Fuse location
■ Checking whether fuses ar
e good or blown
Good
Blown
If replacement is necessary,
replace with a genuine Lexus fuse
or equivalent with the same amper -
age rating as original.
Engine CompartmentEngine Compartment
1
2

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4-3. Do-it-yourself maintenance
CAUTION
■When replacing fuses
Always use a genuine Lexus fuse or equivalent. 
Never install an ordinary wire - even as a temporary fix. 
This may cause extensive damage and possibly a fire.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer
.

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4-3. Do-it-yourself maintenance
4
Maintenance and care
Headlight aim
Adjusting the vertical aiming
Adjusting bolt A
Adjusting bolt B
Turn bolt A in either dir
ection using
a Phillips-head screwdriver.
Remember the turning direction
and the number of turns in mind.
Before checking the headlight aim
Make sure the vehicle has a full tank of gas and the body around
the headlight is not deformed.
Park the vehicle on a level spot.
Sit in the driver’s seat.
Bounce the vehicle several times.
Check the headlight aim.
1
2

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4-3. Do-it-yourself maintenance
Turn bolt B the same number of turns and in the same direction as
step 1 using a Phillip s-head scr
ewdriver.
If you cannot properly aim the headlights, take the vehicle to your Lexus dealer
to adjust the headlight aim. 
After adjusting the headlight in the vertical dir
ection, check if the light has been
shifted from the adjusted position in the horizontal direction.

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4
Maintenance and care
Light bulbs
You can replace following bulbs. Contact your Lexus dealer for more infor-
mation about replacing other light bulbs.
■ Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( P.
3 7 2 )
High mounted stop light
Back-up light
Rear turn signal light
1
2
3

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4-3. Do-it-yourself maintenance
Replacing light bulbs
■High-mounted stop light

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Back-up lights

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4-3. Do-it-yourself maintenance
■Rear turn signal lights

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Installing light bulbs
Fully install light bulbs and any parts used to s
ecure them. Failing to do so may result
in heat damage or fire, or water entering the headlight unit, and may damage the
headlights or cause condensation to build up on the lens.
■Condensation build up on the inside of the lens
Contact your Lexus dealer for more inform ation i
n the following situations. Tempo-
rary condensation build up on th
e inside of the headlight lens does not indicate a
malfunction.
• Large drops of water are built up on the inside of the lens.
• Water has built up inside the headlight.
■LED light bulbs
The tail and stop lights consist of a number of LEDs. if any LED burns out, we rec -
ommend you take your vehicle to your Lexus d
ealer to have the light inspected as
soon as possible.
■Discharge headlights
The headlights may turn off or may not turn on for a short time. If they turn on after a
short period of time, this do es not indicate a malfunction.
CAUTION
■Replacing light bulbs
●Turn off the headlight. Do not attempt to replace the bulb immediately after turn -
ing off the headlight. 
The bulb becomes very hot and may cause burns.
●Do not touch the glass portion of the light bulb. Hold th e bulb by the plastic or
metal portion. 
If the bulb is scratched or dropped it may blow out or crack.
●Do not attempt to repair or disassemble lig ht bulbs, connectors, electric circuits
or component parts. 
Doing so may result in serious injury due to electric shock.

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4-3. Do-it-yourself maintenance
CAUTION
■Discharge headlights
●Do not touch the high voltage socket while the headlights are turned on.
The sockets are usually ch ar
ged with 20,000 volts. Touching the socket may
cause severe injury due to electric shock
NOTICE
■To prevent damage or fire
●Make sure the bulb is fully seated and locked to prevent damage or fire.
●If your hands touch the glass portion of the bulb, wipe the bulb with alcohol
before use.
●Always have your Lexus dealer change the
discharged head lights. 
(Including light bulbs.)