2005 LEXUS LS430 air conditioning

HOW TO USE THIS MANUAL
vi
HOW TO USE THIS MANUAL
The contents of this manual are explained briefly on this
page to help you make the best use of the manual. Please
read this page and the rest of the Owner’s Manual
carefully to make sure you fully understand the operation
of your vehicle.
This will help you enjoy safe and comfortable driving.
TABLE OF CONTENTS
The table of contents and the pictorial index provide easy
reference to the appropriate pages.
BASIC OPERATION QUICK REFERENCE
Operation of basic equipment is briefly explained in an easily
understandable way for quick reference.
SECTION 1 INSTRUMENTS AND CONTROLS
The vehicle’s equipment is divided into the 7 groups listed
below. Use of the equipment is explained, including any points
you should pay particular attention to.
1. Keys and doors
2. Switches
3. Gauges, meters and service reminder indicators
4. Interior equipment
5. Exterior equipment
6. Occupant restraint systems
7. Steering wheel and mirrors
SECTION 2 AIR CONDITIONING AND AUDIO
The features of the vehicle’s air conditioning and audio are
explained in detail. Be sure to read this section so that you can
make full use of them.
SECTION 3 STARTING AND DRIVING
Starting the engine, driving, stopping, operation of features
affecting vehicle handling, hints on vehicle safety and safe
driving techniques are all explained. Please read everything
in this section, and remember − drive safely!
SECTION 4 IN CASE OF AN EMERGENCY
This section explains what to do in the event of an urgent
situation such as the engine not starting or getting a flat tire,
etc. If such a problem occu rs, check the contents of this
Owner’s Manual and follow the instructions given.
SECTION 5 MAINTENANCE
This section explains the importance of regular maintenance.
Regular and periodic inspection and maintenance of your
Lexus will help to keep your vehicle in its best condition.
SECTION 6 SERVICE PROCEDURES AND
SPECIFICATIONS
Simple maintenance procedure and service data are provided
here for your reference should you wish to perform inspection
and maintenance yourself.
INDEX
The page number is listed for each item in the Owner ’s Manual
so that you can rapidly find the item and page you are
searching for.

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
x
5 Window lock switch65
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

6 Side vents 253
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
7 Headlight, turn signal and fog
light switches 54, 57, 58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Windshield wiper and washer switch 58
. . . . . . . . . . . . . . . . . . . . .
9 Automatic air conditioning controls 238, 240
. . . . . . . . . . . . . . . .
10 Rear window and outside rear view mirror defogger
switch 63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . .
11 Clock 116
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . .
12 Lexus park assist system/Rear view monitor/
Navigation system display
(See “Navigation System Owner’s Manual”) 316/323 . . . . . . . . .
13 Outside temperature display 117
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Front passenger’s seat belt reminder light 85
. . . . . . . . . . . . . . . .
15 Center vents 252
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
16 Emergency flasher switch 68
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 Audio system 260
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
18 Glove box 122
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
19 Driving pattern selector switch 305
. . . . . . . . . . . . . . . . . . . . . . . . .
20 Auxiliary box 129
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
21 Seat heater switches/
Climate control seat switches 69/71 . . . . . . . . . . . . . . . . . . . . . . . . .
22 Power outlet 120
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
23 Auxiliary box if power outlet is selected/
Ashtray if cigarette lighter is selected 129/119 . . . . . . . . . . . . . . .
24 Cigarette lighter 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
25 Headlight cleaner switch 62
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Rear seat and rear head restraints
return switch 163 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
27 Traction control system off switch 363
. . . . . . . . . . . . . . . . . . . . . .
28 Rear electric sunshade switch 137
. . . . . . . . . . . . . . . . . . . . . . . . . .
29 CD automatic changer 282
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 Height control switch 360
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31 Damping mode select switch 361
. . . . . . . . . . . . . . . . . . . . . . . . . . .
32 Automatic transmission selector lever 305
. . . . . . . . . . . . . . . . . .
33 Ignition switch 298, 301
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34 Volume adjustment knob 30, 39
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
35 Key cancel switch 34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
36 Tire pressure warning system reset switch 372
. . . . . . . . . . . . . .
37 Cruise control switch/Dynamic radar/laser cruise
control switch 326/329 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

38 Multiinformation display control switch 90
. . . . . . . . . . . . . . . . .
39 Rear view mirror folding switch 232
. . . . . . . . . . . . . . . . . . . . . . . . .
40 Steering switches 288
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
41 Adaptive Front Lighting System cancel switch 56
. . . . . . . . . . . .
42 Trunk lid opener 144
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
43 Parking brake 304
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . .
44 Hood opener 142
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
45 Lexus park assist system switch 316
. . . . . . . . . . . . . . . . . . . . . . . .
46 Parking brake release lever 304
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47 Fuel filler door opener 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48 Coin box 127
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
49 Power rear view mirror control switches 231
. . . . . . . . . . . . . . . . .

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
xii
5 Window lock switch65
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

6 Side vents 253
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
7 Headlight, turn signal and fog
light switches 54, 57, 58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Windshield wiper and washer switch 58
. . . . . . . . . . . . . . . . . . . . .
9 Automatic air conditioning controls 238, 240
. . . . . . . . . . . . . . . .
10 Rear window and outside rear view mirror defogger
switch 63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . .
11 Center vents 252
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
12 Clock 116
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . .
13 Emergency flasher switch 68
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Outside temperature display 117
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 Front passenger’s seat belt reminder light 85
. . . . . . . . . . . . . . . .
16 Audio system 260
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
17 Glove box 122
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
18 Driving pattern selector switch 305
. . . . . . . . . . . . . . . . . . . . . . . . .
19 Auxiliary box 129
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
20 Seat heater switches/
Climate control seat switches 69/71 . . . . . . . . . . . . . . . . . . . . . . . . .
21 Power outlet 120
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
22 Auxiliary box if power outlet is selected/
Ashtray if cigarette lighter is selected 129/119 . . . . . . . . . . . . . . .
23 Cigarette lighter 119
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
24 Headlight cleaner switch 62
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25 Rear seat and rear head restraints
return switch 163 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
26 Traction control system off switch 363
. . . . . . . . . . . . . . . . . . . . . .
27 Rear electric sunshade switch 137
. . . . . . . . . . . . . . . . . . . . . . . . . .
28 CD automatic changer 282
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29 Height control switch 360
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 Damping mode select switch 361
. . . . . . . . . . . . . . . . . . . . . . . . . . .
31 Automatic transmission selector lever 305
. . . . . . . . . . . . . . . . . .
32 Ignition switch 298, 301
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33 Volume adjustment knob 30, 39
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
34 Key cancel switch 34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
35 Tire pressure warning system reset switch 372
. . . . . . . . . . . . . .
36 Cruise control switch/Dynamic radar/laser cruise
control switch 326/329 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

37 Multiinformation display control switch 90
. . . . . . . . . . . . . . . . .
38 Rear view mirror folding switch 232
. . . . . . . . . . . . . . . . . . . . . . . . .
39 Steering switches 288
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
40 Adaptive Front Lighting System cancel switch 56
. . . . . . . . . . . .
41 Trunk lid opener 144
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
42 Parking brake 304
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . .
43 Hood opener 142
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
44 Lexus park assist system switch 316
. . . . . . . . . . . . . . . . . . . . . . . .
45 Parking brake release lever 304
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46 Fuel filler door opener 146
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47 Coin box 127
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
48 Power rear view mirror control switches 231
. . . . . . . . . . . . . . . . .

00L254
PICTORIAL INDEX
xvii
REAR ARMREST
1 Rear seat control switches 162 . . . . .
2 Refreshing rear seat switches 76 . . .
3 Rear air conditioning control
switches 254
. . . . . . . . . . . . . . . . . . . . . .
4 Cupholders 126
. . . . . . . . . . . . . . . . . . .
5 Rear electric sunshade switch 137 . .
6 Rear seat heater switches 69 . . . . . . .
7 Rear climate control
seat switches 72
. . . . . . . . . . . . . . . . . .
8 Audio rear control switches 287 . . . .
For detailed information, refer to the
description given in each section.

SWITCHES
63
NOTICE
Do not turn the headlight cleaner on with the washer
fluid tank empty. It may cause the cleaner motor to
overheat.
REAR WINDOW AND OUTSIDE
REAR VIEW MIRROR DEFOGGER
SWITCH
12L169
Vehicles with navigation system
12L170
Vehicles with rear air conditioning
12L171
Vehicles without rear air conditioning
To turn the electric rear window defogger on, push the
switch.
The ignition switch must be in the “ON” position.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
81

Idling for a long period with the air conditioning on in
stop−and−go traffic.
 Towing a trailer.
NOTICE
Do not remove the thermostat in the engine cooling
system as this may cause the engine to overheat. The
thermostat is designed to control the flow of coolant
to keep the temperature of the engine within the
specified operating range.
 Do not continue driving with an overheated engine.
See “If your vehicle overheats” on page 404.
TACHOMETER
13L144
The tachometer indicates engine speed in thousands of
rpm (revolutions per minute). Use it while driving to
prevent engine overrevving.
Driving with the engine running too fast causes excessive
engine wear and poor fuel economy. Remember, in most
cases the slower the engine speed, the greater the fuel
economy.
NOTICE
Do not let the indicator needle get into the red zone. This
may cause severe engine damage.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
86
(e) Discharge Warning Light
This light warns that the battery is being discharged.
If it comes on while you are driving, stop the vehicle, turn off the
engine, and check for the cause. Look first at the engine drive
belt.
 If it is loose or broken, the generator will not charge the
battery properly.
 If the belt is O.K., there is a problem somewhere in the
charging system.
The engine ignition will continue to operate, however, until the
battery is discharged. Turn off the air conditioning, blower,
radio, etc., and drive directly to the nearest Lexus dealer or
repair shop.
NOTICE
Do not continue driving if the engine drive belt is broken
or loose.
(f) Malfunction Indicator Lamp
This lamp comes on when the ignition switch is turned to
the “ON” position and goes off after the engine starts.
This means that the warning light system is operating
properly.
If the lamp remains on, or the lamp comes on while
driving, first check the following:
 Empty fuel tank
If the fuel tank is empty, refuel immediately.
 Loose fuel tank cap
If the fuel tank cap is loose, securely tighten it.
These cases are temporary malfunctions. The malfunction
indicator lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your
Lexus dealer as soon as possible.
If the fuel tank is not empty or the fuel tank cap is not
loose...
 There is a problem somewhere in the engine, emission
control system, electronic throttle control system, automatic
transmission electrical system or warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
If this lamp comes on and engine speed does not increase
when the accelerator pedal is depressed, there may be a
problem somewhere in the electronic throttle control system.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
99
w267
When the air conditioning filter should be replaced, the
master warning light comes on, a warning tone sounds
and the above message appears.
If the “Change A/C Filter” appears on the multi−information
display, change the air conditioning filter as soon as possible
because the air filter might have clogged. See “Replacing the
air conditioning filter” on page 249 for details.
w268
If you push the “OFF” button for the front air conditioning
for about more than 4 seconds after the replacement of the
air conditioning filters, the above message appears and
the attention tone sounds to inform you that the data has
been reset.
When you push the “OFF” button for the front air conditioning
for more than 4 seconds before “Change A/C Filter” appears,
the data will be cleared. Do not reset the data before this
message appears.
w500
If you push the ignition switch or insert the smart key, and
hold the switch or key in the “LOCK” position for more
than 3 seconds, the master warning light comes on, a
warning tone sounds and the above message appears.
If you release the switch or key, or turn to “ACC”, all the warning
will turn off. If it is difficult to turn the switch or key, be sure to
push the switch or key while turning the steering wheel slightly
in either direction, and then turn the switch or key.
w271
If the interlock cable for steering lock is faulty, the master
warning light flashes, a warning tone sounds and the
above message appears.
If the above message appears, contact your Lexus dealer as
soon as possible.