air conditioning LEXUS LS430 2006 Owner's Guide

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Fuse box in the front passenger’s side kick panel
FuseAmpereCircuit
MPX-IG7. 5
Tilt and telescopic steering, Power door
lock system, Power seat system, Engine
immobilizer system
D S/HTR15Seat heater, Climate control seat system
AIR SUS20Electronically modula ted air suspension
system
D-ACC7. 5Shift lock system, Theft deterrent system
PWR OUTLET15Power outlet
D-CIG15Rear cigarette lighter
OBD7. 5On-board diagnosis system
AM17. 5Starting system
ABS-IG7. 5Vehicle stability control system
D B/ANC5Seat belts
SECURITY7. 5Theft deterrent system
A/C7. 5Air conditioning system
STO P5Stop lights
D RR-IG10Refreshing seat
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306
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
IG230SRS airbag system, Engine immobilizer sys-
tem, Steering lock system, Starting system
HAZ15Emergency flashers
ST R LO C K7. 5Steering lock system
AM27. 5All components in "STA" and "IG2", Start -
ing system
MPX-B17. 5
Power door lock system, Engine immobi -
lizer system, Steering lock system, Front
power seat, Rear power seat
MPX-B37. 5
Tilt and telescopic steering, Headlight
switch, Windshield wiper and washer
switch, Turn signal switch
DOME10
Vanity lights, Outer foot lights, lgnition
switch light, Clock, Gauges and meters,
Interior lights, Personal lights
MPX-B27. 5Gauges and meters, Vehicle stability con -
trol system, Illuminated entry system, TEL
P RR-IG10Refreshing seat
H-LP LVL7. 5Headlight leveling system, Adaptive Front
Lighting System (AFS)
P- I G7. 5Rain sensor, Air conditioning system, Moon
roof, Multi-information display, Clock
P S/HTR15Seat heater, Climate control seat system
P- ACC7. 5
Air conditioning system, Audio system,
Clock, Multi-information display, Illumi -
nated entry system
P- C I G15Front cigarette lighter
RADIO NO.17. 5Audio system
RR DOOR LH20Power door lock system, Power window,
Door closer system, Door courtesy lights
P DOOR25
Power door lock system, Power rear view
mirror control system, Outside rear view
mirror defogger, Door closer system, Door
courtesy lights, Power windows
TEL7. 5Audio system, Navigation system
P B/ANC5Seat belts, Seat belt buckle illumination
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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Fuse box in the trunk
FuseAmpereCircuit
RR DOOR RH20Power door lock system, Power window,
Door closer system, Door courtesy lights
D DOOR25
Power door lock system, Door closer sys -
tem, Power rear view mirror control system,
Outside rear view mirror defogger, Door
courtesy lights, Power windows
FuseAmpereCircuit
RR IG7. 5
Lexus park assist system, Electronically
modulated air suspen sion system, Theft
deterrent system, TEL
RR ACC7. 5Audio system, TEL
RR ECU-B7. 5
Rear air conditioning system, Theft deter -
rent system, Trunk light, Refreshing rear
seat
RR A/C7. 5Rear air conditioning system, Air purifier
RR S/HTR30Seat heater, Climate control seat system
RR S/SHADE15Sunshade
LCE LP7. 5License plate lights
S/ROOF30Moon roof
FUEL OPN10Fuel opener system, Trunk lid closer system
AMP30Audio system
P P/SEAT30Power seat system
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5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
Look for any of the following symptoms.
• Fluid leaks under the vehicle
Water dripping from the air conditioning after use is normal
• Flat-looking tires or uneven tire wear
• Engine coolant temperature gauge needle continually points higher
than normal
■ A
udible symptoms
Listen for any of the following symptoms.
• Change in exhaust sound
• Excessive tire squeal when cornering
• Strange noises related to suspension system
• Pinging or other noises related to engine
■ P
roblems with operation
Check for any of the following symptoms.
• Engine missing, stumbling or running rough
• Appreciable loss of power
• Vehicle pulls to heavily one side when braking
• Vehicle pulls to heavily one sid e when driving on a le
vel road
• Loss of brake effectiveness, sp ongy feeling, pedal almost touches
floor

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5-2. Steps to take in an emergency
Warning message and lightDetailsCorrection procedures
(flashes)
Open moon roof warn-
ing
If the driver's door is
opened with the igni-
tion switch turned off
and the moon roof is
opened.
Close the moon roof
when you leave your
vehicle.
Parking brake warning
(Warning buzzer)*1
Indicates that the
parking brake is not
released.Release the parking
brake.
Low tire pressure
warning
Tire inflation pressure
is low.Adjust the tire inflation to
the specified pressure.
Low washer fluid warn -
ing
Washer fluid level is
low.Fill the washer fluid tank.
Air conditioning filter
warning
Indicates that the air
conditioning filter is
clogged enough to
require replacement.Change the air condi-
tioning filter.

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6-1. Specifications
Glossary of tire terminology
Tire related termDefinition
Accessory weight
The combined weight (in excess of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Cold tire inflation 
pressure
Tire pressure when the vehicle has been parked for three
hours or more, or has not been driven more than 1 mile or
1.5 km under that condition
Curb weight
The weight of a motor vehicl e with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air conditioning and additional weight
optional engine
Maximum inflation 
pressure
The maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
Maximum loaded 
vehicle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1 that follows
Production options weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the stan -
dard items which they replace, not previously considered
in curb weight or accessory weight, including heavy duty
brakes, ride levelers, roof rack, heavy duty battery, and
special trim
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68 kg)
times the vehicle’s designated seating capacity

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6-2. Owner’s customize
6
Vehicle specifications
Initializing your Lexus
ItemMaintenance performedReference
Po w e r w i n d o wReconnected, replaced or
recharged battery.P. 4 5
Moon roofReconnected, replaced or
recharged battery.P. 4 8
Tire pressure warning sys-
tem
Adjusted tire inflation
pressure, replaced tires or
wheels.
P. 2 7 9
Engine oil maintenance
dataChanged engine oil.P. 2 6 5
Air conditioning filter clog-
ging data
Replaced air conditioning
filters.P. 2 9 3
The following features must be initialized after certain maintenance is per-
formed to ensure the system operates correctly.

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Alphabetical index
Alphabetical index
A/C .............................................................162
ABS ABS ........................................................... 140
Warning light ....................................... 330
Adaptive front lighting system Adaptive front lighting system ........ 112
Warning light ....................................... 330
Air conditioning system Automatic air conditioning 
system .................................................... 162
Air conditioning filters ..................... 289
Rear air conditioning ......................... 172
Airbags Airbag operating conditions........... 62
Airbag precautions 
for your child ....................................... 66
Airbag warning light ........................ 330
Curtain shield air bag operating 
conditions.............................................. 62
Curtain shield airbag 
precautions .......................................... 66
General airbag precautions ........... 66
Locations of airbags.............................. 61
Modification and disposal 
of airbags................................................ 72
Side airbag 
operating conditions ....................... 62
Side airbag precautions .................... 69
Alarm ............................................................ 55
AM/FM radio........................................... 176
Anti-lock brake system Anti-lock brake system.................... 140
Warning light ....................................... 330
Ashtrays ....................................................... 211
Audio system Antenna .................................................... 176Cassette player ....................................
182
CD changer........................................... 185
Optimal use ............................................. 191
Radio ......................................................... 176
Rear controller...................................... 193
Steering switch ..................................... 195
Auto anti-glare mirror ........................... 42
Automatic air conditioning 
system ......................................................162
Automatic headlight leveling 
system Automatic headlight leveling 
system...................................................... 112
Warning light....................................... 330
Automatic light control 
system .........................................................111
Automatic transmission Automatic transmission .................... 98
Auxiliary boxes ...................................... 205
Back-up lights Replacing light bulbs ......................... 314
Wattage .................................................. 372
Battery Checking................................................ 273
If the battery is discharged ........... 356
Preparing and checking  before winter...................................... 149
Brake Brake assist system ............................ 140
Fluid ........................................................... 270
Parking brake........................................ 102
Warning light/buzzer ..................... 328
Brake lights Wattage .................................................. 372A
B

396
Alphabetical index
Load limits .................................................148
Luggage net ............................................ 227
Maintenance Do-it-yourself maintenance ......... 256
General maintenance ..................... 252
Maintenance data.............................. 364
Maintenance requirements .......... 250
Meter Instrument panel light 
control................................................... 104
Meters ...................................................... 103
Mirrors Auto anti-glare mirror ......................... 42
Side mirror heaters ............................. 170
Side mirrors ............................................. 43
Vanity mirrors...................................... 209
Moon roof ................................................... 48
Multi-information display Cruise information .............................. 107
Graphic information ......................... 109
Warning messages .......................... 334
Odometer ..........
........................................... 103
Oil Engine oil ............................................... 263
Open door warning 
light/buzzer .......................................... 331
Opener Fuel filler door........................................... 51
Hood........................................................ 260
Trunk ............................................................. 19
Outer foot light ....................................... 198
Outside rear view mirrors Adjusting and folding ......................... 43Driving position memory ..................
25
Outside temperature 
display ......................................................216
Overhead console 
Box .......................................................... 203
Overhead lights 
Wattage ................................................ 372
Parking lights Switch .......................................................... 110
Wattage .................................................. 372
Parking brake.......................................... 102
Penlight ..................................................... 230
Personal lights Switch ...................................................... 200
Wattage .................................................. 372
Power outlet ............................................. 214
Power steering fluid ............................. 272
Power windows ........................................ 45
Pre-collision system Per-collision system........................... 143
Warning message ............................ 334
Radiator .................................................... 269
Radio............................................................ 176
RDS .............................................................. 177
Rear air conditioning control............. 172
Rear audio switches ............................. 185
Rear seat position memory ................. 29
Rear seats Adjustment ............................................... 23
Rear view monitor system .................. 123
Rear window defogger ........................ 170
Refleshing rear seat switches .......... 222
M
O
P
R

397
Alphabetical index
ReplacingAir conditioning filter ....................... 289
Blade type fuses ................................. 298
Cartridge type fuses ........................ 309
Light bulbs .............................................. 313
Wireless remote control 
battery.................................................. 295
Seat belts Adjusting the belt .................................. 34
Automatic Locking
Retractor (ALR) .................................... 36
Child restraint system 
installation .............................................. 73
Cleaning ................................................ 248
Emergency Locking 
Retractor (ELR) ................................. 36
How to wear your seat belt.............. 34
How your child should 
wear the seat belt............................... 37
Pregnant women, 
proper seat belt use.......................... 37
Reminder light....................................... 331
Seat belt extenders .............................. 38
Seat belt pretensioners...................... 36
Seat heaters.............................................. 218
Seats Cleaning ................................................ 248
Child seats/child restraint 
system installation ..............................76
Driving position memory .................. 25
Head restraint .......................................... 31
Properly sitting in the seat................ 58
Rear seat position memory .............. 29
Refleshing rear seat switches ....... 222Seat adjustment .....................................
22
Seat adjustment precautions........... 24
Seat heaters ........................................... 218
Ventilated seats .................................. 220
Selector lever ............................................ 98
Automatic transmission .................... 98
If you cannot shift selector 
lever.......................................................354
Service reminder indicators.............. 105
Shift lock system .................................... 354
Side airbags.................................................. 61
Side marker lights Switch.......................................................... 110
Wattage .................................................. 372
Side mirror.................................................. 43
Adjusting and folding.......................... 43
Driving position memory .................. 25
Smart access system Smart access system .............................. 5
Warning messages........................... 334
Snow tires.................................................... 151
Spare tire .................................................. 347
Spark plug................................................ 367
Specifications ......................................... 364
Speedometer .......................................... 103
SRS airbag SRS airbags.............................................. 60
Warning light ....................................... 334
Steering wheel Adjusting ................................................... 40
Audio switches..................................... 195
Driving position memory .................. 25
Stop lights Wattage .................................................. 372
Stuck If your vehicle becomes stuck ...... 361
S