2003 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 24, 40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Driving position memory switches 152
. . . . . . . . . . .
3 Power rear view mirror control switches 102 . . . . . .
4 Side vents 170
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Instrument panel light control dial 61
. . . . . . . . . . . . .
6 Headlight, turn signal and
fog light switches 28, 30, 33, 34
. . . . . . . . . . . . . . . . . . .
7 Multiinformation display control switches 59 . . . .
8 Ignition switch 225
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Wiper and washer switches 34
. . . . . . . . . . . . . . . . . . .
10 Seat heater switches 44
. . . . . . . . . . . . . . . . . . . . . . . . .
11 Emergency flasher switch 43
. . . . . . . . . . . . . . . . . . . .
12 Clock 67
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . .
13 Car audio 174, 196
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Front passenger’s seat belt reminder light 53 . . . . .
15 Security indicator light 14, 156
. . . . . . . . . . . . . . . . . . . Page
16 Glove box
70
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 Automatic air conditioning controls 160
. . . . . . . . . .
18 Rear window and outside rear view mirror
defogger switch 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 Ashtray 68
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
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20 Automatic transmission selector lever 227 . . . . . . . .
21 Rear electric sunshade switch 79
. . . . . . . . . . . . . . . .
22 Electronic modulated suspension
control switch 237 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Traction control system off switch 238
. . . . . . . . . . .
24 Cruise control switch 234
. . . . . . . . . . . . . . . . . . . . . . .
25 Power adjustable pedals switch 100
. . . . . . . . . . . . . .
26 Parking brake pedal 226
. . . . . . . . . . . . . . . . . . . . . . . . .
27 Auxiliary box 76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 Hood lock release lever 84
. . . . . . . . . . . . . . . . . . . . . .
29 Trunk lid opener 85
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 Fuel filler door opener 87
. . . . . . . . . . . . . . . . . . . . . . . .

COMFORT ADJUSTMENT
11 5
 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
smoke−like 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
131
Do not use seat accessories which cover the parts
where the side airbags inflate. Such accessories may
prevent the side airbags from activating correctly,
causing death or serious injury.
 Do not modify or remove any wiring. Do not modify,
remove, st rike or open any components, such as the
steering wheel pad, steering wheel, column cover,
front passenger airbag cover or airbag sensor
assembly. Doing so may cause sudden front airbags
inflation or disable the system, which could result in
death or serious injury.
 Do not modify or replace the seats or upholstery of
front seats with side airbags. Such changes may
disable the system or cause the side airbags to inflate
accidentally, resulting in death or serious injury.
 Do not disassemble or repair the front and rear pillars
and roof side rail containing the curtain shield
airbags. Such changes may disable the system or
cause the curtain shield airbags to inflate
accidentally, resulting in death or serious injury.
Failure to follow these instructions can result in death
or serious injury. 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 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

MAINTENANCE
292Power 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 323 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 223.)
DOES YOUR VEHICLE NEED
REPAIRING?
Be on the alert for changes in performance and sounds, and
visual tip −offs 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.)
 Flat−looking 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

ELECTRICAL COMPONENTS
339
No.FUSEAMPERECIRCUIT
33 ECUB10
Multiplex communication
system (power door lock
system, security system,
auto−door 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,
multi− information display
35 CIG15Cigarette lighter
36 ECU
ACC5
Power rear view mirrors, clock,
multi− information display,
driving position memory
system
No.FUSEAMPERECIRCUIT
37 RAD NO.210Car audio system, navigation
system
38 POWER
POINT15Power outlet
39 RAD NO.120Car audio system, navigation
system
40 GAUGE110
Gauges and meters, clock,
outside temperature gauge,
multi −information display, shift
lock system
41 ECUIG10
SRS airbag system, power
windows, anti− lock brake
system, electronic modulated
suspension, driving position
memory system
42 WIPER25Windshield wipers
43 HTR10Air conditioning system
44 MIR
HTR10Outside rear view mirror
heaters