2002 Lexus ES300 air suspension

For detailed information, refer to the description given in each section\
.
PICTORIAL INDEX
viPage
1
Door lock switch and power window
switches 21, 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Driving position memory switches 150
. . . . . . . . . . .
3 Power rear view mirror control switches 100 . . . . . .
4 Side vents 168
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Instrument panel light control dial 59
. . . . . . . . . . . . .
6 Headlight, turn signal and
fog light switches 26, 28, 31, 32
. . . . . . . . . . . . . . . . . . .
7 Multiinformation display control switches 57 . . . .
8 Ignition switch 220
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Wiper and washer switches 32
. . . . . . . . . . . . . . . . . . .
10 Seat heater switches 42
. . . . . . . . . . . . . . . . . . . . . . . . .
11 Emergency flasher switch 41
. . . . . . . . . . . . . . . . . . . .
12 Clock 65
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . .
13 Car audio 172, 193
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Front passenger’s seat belt reminder light 51 . . . . .
15 Security indicator light 12, 154
. . . . . . . . . . . . . . . . . . . Page
16 Glove box
68
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 Automatic air conditioning controls 158
. . . . . . . . . .
18 Rear window and outside rear view mirror
defogger switch 37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 Ashtray 66
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
.
20 Automatic transmission selector lever 223 . . . . . . . .
21 Rear electric sunshade switch 77
. . . . . . . . . . . . . . . .
22 Electronic modulated suspension
control switch 233 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Traction control system off switch 234
. . . . . . . . . . .
24 Cruise control switch 230
. . . . . . . . . . . . . . . . . . . . . . .
25 Power adjustable pedals switch 98
. . . . . . . . . . . . . . .
26 Parking brake pedal 221
. . . . . . . . . . . . . . . . . . . . . . . . .
27 Auxiliary box 74
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 Hood lock release lever 82
. . . . . . . . . . . . . . . . . . . . . .
29 Trunk lid opener 83
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 Fuel filler door opener 85
. . . . . . . . . . . . . . . . . . . . . . . .

COMFORT ADJUSTMENT
11 3
 1Front seat belt pretensioner assemblies
2SRS warning light
3Front airbag sensors
4Airbag sensor assembly
The front seat belt pretensioner system mainly consists of the
above components, and their locations are shown in the
illustration.
The front seat belt pretensioners are controlled by the airbag
sensor assembly. The airbag sensor assembly consists of a
safing sensor and airbag sensor.
When the front seat belt pretensioners are activated, an
operating noise may be heard and a small amount of
smokelike gas may be released. This gas is harmless and
does not indicate that a fire is occurring.
Once the front seat belt pretensioners have been activated, the
seat belt retractors remain locked.
CAUTION
Do not modify, remove, strike or open the front seat belt
pretensioner assemblies, airbag sensor or surrounding
area or wiring. Doing so may cause sudden operation of
the front seat belt pretensioners or disable the system,
which could result in death or serious injury.
Failure to follow these instructions can result in death
or serious injuries. Consult your Lexus dealer about
any repairs and modifications.
NOTICE
Do not perform any of the following changes without
consulting your Lexus dealer. Such changes can
interfere with proper operation of the front seat belt
pretensioners in some cases.
 Installation of electronic devices such as a mobile
twoway radio, cassette tape player or compact disc
player
 Repairs on or near the front seat belt retractor
assemblies
 Modification of the suspension system
 Modification of the front end structure

COMFORT ADJUSTMENT
129
NOTICE
Do not perform any of the following changes without
consulting your Lexus dealer. Such changes can
interfere with proper operation of the SRS in some
cases.
Installation of electronic devices such as a mobile
twoway radio, cassette tape player or compact disc
player
 Modification of the suspension system
 Modification of the front end structure and side
structure of the passenger compartment
 Attachment of a grille guard (bull bar, kangaroo bar,
etc.), snowplow, winches or any other equipment to
the front end
 Repairs made on or near the front fenders, front end
structure, console, steering column, steering wheel,
dashboard near the front passenger airbag or front
seats
This SRS airbag system has an indicator to inform the driver
of operating problems. If either of the following conditions
occurs, this indicates a malfunction of the airbags. Contact
your Lexus dealer as soon as possible to service the vehicle.
 When the ignition key is turned to the “ON” position, the light
does not come on, stays on or flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the SRS front airbags have
a problem. If the light flashes, the SRS side and curtain shield
airbags have a problem.

MAINTENANCE
284Power steering fluid level
Check the level through the reservoir. The level should be in
the “HOT” or “COLD” range depending on the fluid
temperature. See page 314 for additional information.
Exhaust system
If you notice any change in the sound of the exhaust or smell
exhaust fumes, have the cause located and corrected
immediately. (See “Engine exhaust caution” on page 219.)
DOES YOUR VEHICLE NEED
REPAIRING?
Be on the alert for changes in performance and sounds, and
visual tipoffs that indicate service is needed. Some important
clues are:
 Engine missing, stumbling, or pinging
 Appreciable loss of power
 Strange engine noises
 A fluid leak under the vehicle (However, water dripping from
the air conditioning after use is normal.)
 Change in exhaust sound (This may indicate a dangerous
carbon monoxide leak. Drive with the windows open and
have the exhaust system checked immediately.)
 Flatlooking tires, excessive tire squeal when cornering,
uneven tire wear
 Vehicle pulls to one side when driving straight on a level
road
 Strange noises related to suspension movement
 Loss of brake effectiveness, spongy feeling brake pedal,
pedal almost touches floors, vehicle pulls to one side when
braking
 Engine coolant temperature continually higher than normal

CHASSIS
321
ALUMINUM WHEEL PRECAUTIONS
When installing aluminum wheels, check that the wheel
nuts are tight after driving your vehicle the first 1600 km
(1000 miles).
 If you have rotated, repaired, or changed your tires, check
that the wheel nuts are still tight after driving 1600 km (1000
miles).
 When using tire chains, be careful not to damage the
aluminum wheels.
 Use only the Lexus wheel nuts and wrench designed for
your aluminum wheels.
 When balancing your wheels, use only Lexus balance
weights or equivalent and a plastic or rubber hammer.
 As with any wheel, periodically check your aluminum
wheels for damage. If damaged, replace immediately.
SUSPENSION AND CHASSIS
CAUTION
Do not modify the suspension/chassis with lift kits,
spacers, springs, etc. It can cause dangerous handling
characteristics, resulting in loss of control.

ELECTRICAL COMPONENTS
327
24 SPARE5Spare fuse
25 SPARE10Spare fuse
No.FUSEAMPERECIRCUIT
26 ABS NO.160
All components in “RDI FAN”,
“ABS NO.2”, “ABS NO.3”,
“CDS”, “HTR (50 A)” and “ADJ
PDL” fuses and antilock brake
system, vehicle skid control
system, traction control
system, brake assist system
27 ALT120
All components in “DEF”, “PWR
NO.1”, “PWR NO.2”, “PWR
NO.3”, “PWR NO.4”, “STOP”,
“DOOR NO.2”, “OBD”, “PWR
SEAT”, “FUEL OPEN”, “FOG”,
“AMP”, “PANEL”, “TAIL”,
“AM1”, “CIG”, “POWER
POINT”, “RAD NO.2”,
“ECUACC”, “GAUGE1”,
“GAUGE2”, “ECUIG”,
“WIPER”, “WASHER”, “HTR
(10 A)”, “SEAT HTR”, and
“SUNSHADE” fuses
28 SPARE15Spare fuse
29 A/C10Air conditioning system
30 DRL5Daytime running light system
31 HEAD RH
LW R15Righthand headlight (low
beam)
32 HEAD LHLW R15Lefthand headlight (low
beam) and front fog lights
No.FUSEAMPERECIRCUIT
33 ECUB10
Multiplex communication
system (power door lock
system, security system,
autodoor locking system,
automatic light control system,
headlight delay off system, tail
light auto cut system,
illuminated entry system,
daytime running light system,
wireless remote control
system) air conditioning
system, electronic modulated
suspension, driving position
memory system
34 DOME7.5
Ignition switch light, interior
light, personal lights, foot
lights, door courtesy lights,
trunk light, vanity lights, garage
door opener, clock, outside
temperature gauge,
multiinformation display
35 CIG15Cigarette lighter
36 ECUACC5
Power rear view mirrors, clock,
multiinformation display,
driving position memory
system
37 RAD NO.210Car audio system, navigation
system

ELECTRICAL COMPONENTS
328
No.FUSEAMPERECIRCUIT
38 POWERPOINT15Power outlet
39 RAD NO.120Car audio system, navigation
system
40 GAUGE110
Gauges and meters, clock,
outside temperature gauge,
multiinformation display, shift
lock system
41 ECUIG10
SRS airbag system, power
windows, antilock brake
system, electronic modulated
suspension, driving position
memory system
42 WIPER25Windshield wipers
43 HTR10Air conditioning system
44 MIR
HTR10Outside rear view mirror
heaters
45 AM15Starting system
46 FOG15Front fog lights
47 SUN
SHADE15Rear sunshade
48 GAUGE210
Auto antiglare inside rear
view mirror, compass, backup
lights, automatic light control
system, automa tic headlight
leveling system, cruise control
system, seat belt reminder
lights
No.FUSEAMPERECIRCUIT
49 PANEL10
Glove box light, console box
light, clock, outside
temperature gauge,
multiinformation display,
instrument cluster lights,
instrument panel lights,
overdriveoff indicator light
50 TAIL10Tail lights, parking lights,
license plate lights
51 PWR NO.420Rear passenger’s power
window (left side)
52 PWR NO.220Front passenger’s door lock
system, front passenger’s
power window
53 OBD7.5Onboard diagnosis system
54 SEAT
HTR20Seat heaters
55 WASHER15Windshield washer
56 FA NRLY10Electric cooling fans
57 STOP15Stop lights, high mounted stop-
light
58 FUEL
OPEN5Fuel filler door opener
59 DOOR NO.225
Multiplex communication
system (power door lock
system, autodoor locking
system, wireless remote
control system)