2006 LEXUS LS430 headlights

304
4-3. Do-it-yourself maintenance
■Fuse box in the driver’s side kick panel
FuseAmpereCircuit
TA I L7. 5Tail lights, parking lights, Side marker lights
H-LP CLN30Headlight cleaner
EFI NO.125Multiport fuel injection system/sequential
multiport fuel injection system
HORN10Horns
ETCS10Multiport fuel injection system/sequential
multiport fuel injection system
H-LP HI20Headlights (high beam)
FuseAmpereCircuit
TI & TE20Tilt and telescopic steering
PA N E L7. 5
Lexus park assist system, Rear seat heater,
Rear climate control seat, Multi-informa -
tion display, Audio system, Cigarette
li
ghter, Instrument panel light, Coin box
light, Rear mirror light, Glove box light,
Power rear seat, Electronically modulated
air suspension system, Turn signal lights,
Clock, Shift lock system, Vehicle stability
control system, Sunshade, Power rear view
mirror control system, Console box light,
Fuel opener system, Adaptive Front Light -
ing System (AFS)
D P/SEAT30Power seat system
GAUGE7. 5Gauges and meters, Lexus park assist sys -
tem, Shift lock system
12
13
14
15
16
17
1
2
3
4

309
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

312
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.

317
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.

318
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.)

5
When trouble arises
353
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start, even though correct starting procedures are being
followed (P.94), consider each of the following points. 
Contact your Lexus dealer if the problem cannot be repaired, or if repair pro -
cedures are unknown.
■ The engine will not start even wh en the starter motor operates nor-
mally
One of the following may be the cause of the problem.
• There may not be sufficient fuel in the vehicle’s tank. 
Add fuel to the vehicle.
• The engine may be flooded. 
Try to restart the engine once mor
e following correct starting
procedures (
P. 94 ). Hold the ignition switch in the START posi -
tion for a slightly longer period (u p to a maximum of 15 seconds).
■ The star
ter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
One of the following may be the cause of the problem.
• The battery may be discharged. (
P.356 )
• The battery terminal connectio ns may be loose or corr
oded.
■ The star
ter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
• One or both of the battery terminals may be disconnected.
• The battery may be discharged. (
P.356 )
• There may be a malfunction in the engine immobilizer system.  (
P.54)

5
When trouble arises
357
5-2. Steps to take in an emergency
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is turned off.
●Turn off any unnecessary electrical comp onents when the vehicle runs at a low
speed for an extended period, such as in heavy traffic, etc.
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
ga

s that may be emitted from the battery.
• Make sure the jumper cable is connected to
the correct terminal and that it is
not unintentionally in contact with any part other than the intended terminal.
• Do not allow the booster cables to come into cont
act with the + and - terminals.
• Do not generate a flame near the battery b
y using a match, cigarette lighter, or
smoking.
■Battery precautions
The battery contains poisonous and corrosive electrolyte, while related parts con -
tain lead and lead compounds. 
Observe the following precautions when handling the battery.
• Do not lean over the battery
• When working with the battery, always we ar safety glas
ses and take care not to
allow any battery fluids (acid) to come into contact with skin, clothing or the
vehicle body.
• In the event that battery fluid comes into co
ntact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention. Place a wet
sp
onge or cloth over the affected area until medical attention can be received.
• Always wash your hands after ha
ndling battery-related parts.
• Do not allow children near the battery.
Once the engine starts, have the vehicle checked at your Lexus dealer as
soon as possible.

394
Alphabetical index
Driving position memory ......................25
Dynamic radar/laser 
cruise control ....................................... 129
ECT Pattern select switch ......................... 99
Electronically modulated 
air suspension ...................................... 138
Engine Compartment ..................................... 262
Hood........................................................ 260
How to start the engine..................... 94
If your vehicle will not start............ 353
Ignition switch......................................... 94
Malfunction indicator lamp........... 330
Engine coolant Capacity ................................................. 367
Checking ............................................... 268
Preparing and checking 
before winter ......................................149
Engine coolant temperature 
gauge....................................................... 103
Engine immobilizer system.................. 54
Engine oil Capacity ................................................. 366
Checking ............................................... 263
Preparing and checking 
before winter ......................................149
Event data recorder ............................ 326
First-aid kit net........................................ 227
Fog lights Switch .......................................................... 113
Wattage.................................................. 372
Floor lights ................................................ 198Floor mats ................................................
224
Fluid Brake ........................................................ 270
Power steering .................................... 272
Washer.................................................... 277
Front passenger's seat
belt 
reminder light ..................................... 332
Front seats Adjustment ............................................... 22
Fuel Capacity ................................................ 366
Fuel gauge .............................................. 103
Information ............................................ 373
Low fuel level warning light ........... 331
Refueling ..................................................... 51
Fuel filler door ............................................. 51
Fuel pump shut off system................. 325
Fuses Blade ...................................................... 298
Cartridge............................................... 309
Gas station information ..................... 402
Garage door opener .......................... 232
Gauge and meter.................................. 103
Glove box ................................................ 202
Glove compartment light Wattage .................................................. 372
Graphic information ............................ 109
Head restraints Adjusting..................................................... 31
Headlight aim ............................................ 311
Headlight cleaner.................................... 117
Headlights Operation ................................................. 110
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