2003 Lexus ES300 air condition

CHASSIS
327
If you have tire damage such as cuts, splits, cracks deep
enough to expose the fabric, or bulges indicating internal
damage, the tire should be replaced.
If a tire often goes flat or cannot be properly repaired due to the
size or location of a cut or other damage, it should be
replaced.
If you are not sure, consult with your Lexus dealer.
If an air loss occurs while driving, do not continue driving with
a deflated tire. Driving even a short distance can damage a tire
beyond repair.
Any tires which are over 6 years old must be checked by
a qualified technician even if damage is not obvious.
Tires deteriorate with age even if they have never or seldom
been used.
This also applies to the spare tire and tires stored for future
use.
Uniform tire quality grading
This information has been prepared in accordance with
regulations issued by the National Highway T raffic Safety
Administration of the U.S. Department of Transportation.
It provides the purchasers and/or prospective purchasers
of Lexus vehicles with information on uniform tire quality
grading.
Your Lexus dealer will help answer any questions you may
have as you read this information.
DOT quality grades All passenger car tires must
conform to Federal Safety Requirements in addition to
these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and
maximum section width. For example: Treadwear 200
Traction AA Temperature A
Treadwear − The treadwear grade is a comparative rating
based on the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example, a tire graded 150 would wear one and a half (1 − 1/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual
conditions of their use, however, and may depart significantly
from the norm due to variations in driving habits, service
practices and differences in road characteristics and climate.
Traction AA, A, B, C − The traction grades, from highest to
lowest, are AA, A, B and C, and they represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt
and concrete. A tire marked C may have poor traction
performance.

ELECTRICAL COMPONENTS
338
No.FUSEAMPERECIRCUIT
19 ABS NO.240
Anti−lock brake system,
vehicle skid control system,
traction control system, brake
assist system
20 MAIN40
All components in “HEAD LH
LWR”, “HEAD RH LWR”, “HEAD
LH UPR”, “HEAD RH UPR” and
“DRL” fuses
21 ABS NO.340
Anti −lock brake system,
vehicle skid control system,
traction control system, brake
assist system
22 HTR50Air conditioning system
23 RDI30Electric cooling fan
24 SPARE5Spare fuse
25 SPARE10Spare fuse
26 ABS NO.160
All components in “RDI FAN”,
“ABS NO.2”, “ABS NO.3”,
“CDS”, “HTR (50 A)” and “ADJ
PDL” fuses and anti −lock brake
system, vehicle skid control
system, traction control
system, brake assist system
No.FUSEAMPERECIRCUIT
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”,
“ECU− ACC”, “GAUGE1”,
“GAUGE2”, “ECU− IG”,
“WIPER”, “WASHER”, “HTR
(10 A)”, “SEAT HTR” and
“SUN− SHADE” fuses
28 SPARE15Spare fuse
29 A/C10Air conditioning system
30 DRL5Daytime running light system
31 HEAD RH
LW R15Right −hand headlight (low
beam)
32 HEAD LH
LW R15Left −hand headlight (low
beam) and front fog lights

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

BODY
356
PROTECTING YOUR VEHICLEFROM CORROSION
Proper care of your Lexus can help ensure long −term
corrosion prevention.
The most common causes of corrosion to your vehicle
are:
 The accumulation of road salt, dirt and moisture in
hard−to−reach areas under the vehicle.
 Chipping of paint or undercoating caused by minor
accidents or by stones and gravel.
The following conditions will cause or accelerate
corrosion of your vehicle, so it is important to keep your
vehicle, particularly the underside, as clean as possible
and to repair any damage to paint or protective coatings
as soon as possible.
 The presence of road salt or dust control chemicals, salt in
the air near the sea coast, industrial air pollution.
 High humidity, especially at temperatures just above
freezing point.
 Certain parts of your vehicle are wet or damp for an
extended period of time, even though other parts of the
vehicle are dry.
 Components of the vehicle which are prevented from
quick−drying due to lack of proper ventilation are exposed
to high temperature. To help prevent corrosion on your Lexus, follow these
guidelines:
Keep your vehicle clean by regular washing.
In addition,
observe the following points.
 If you drive on salted roads in the winter or if you live near
the ocean, you should hose off the undercarriage at least
once a month to minimize corrosion.
 High pressure water or steam is effective for cleaning the
vehicle’s underside and wheel housings. Pay particular
attention to these areas as it is dif ficult to see all the mud and
dirt. It will do more harm than good to simply wet the mud
and debris without removing them. The lower edge of
doors, rocker panels and frame members have drain holes
which should not be allowed to clog with dirt as trapped
water in these areas can cause corrosion.
 Wash the underside of the vehicle thoroughly when winter
is over.
See “Washing and waxing” on page 357 for more tips.
Check the condition of your vehicle’s paint and trim. If you
find any chips or scratches in the paint, touch them up
immediately to prevent corrosion from starting. If the chips or
scratches have gone through the bare metal, have a qualified
body shop make the repair.

BODY
361
The seat belts may be cleaned with mild soap and water
or with lukewarm water.
Use a cloth or sponge. As you are cleaning, check the belts
for excessive wear, fraying or cuts.
NOTICE

Use a good foamtype shampoo to clean the carpets.
 Do not use dye or bleach on the belts it may weaken
them.
 Do not use the belts until they become dry.
 The windows may be cleaned with any household
window cleaner.
 Do not apply detergent to or wet the automatic wiper
control sensor when cleaning the inside of the
windshield.
 When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires or
connectors.
Air Conditioning Control Panel, Car Audio,
Instrument Panel, Console Panel, and
Switches
Use a soft damp cloth for cleaning.
Soak a clean soft cloth in water or lukewarm water then lightly
wipe off any dirt.
NOTICE
 Do not use organic substances (solvents, kerosene,
alcohol, gasoline, etc.) or alkaline or acidic solutions.
These chemicals can cause discoloring, staining or
peeling of the surface.
 If you use cleaners or polishing agents, make sure
their ingredients do not include the substances
mentioned above.
 If you use a liquid car freshener , do not spill the liquid
onto the vehicle’s interior surfaces. It may contain
the ingredients mentio ned above. Immediately clean
any spill using the method mentioned above.
If you have any questions about the cleaning of your
Lexus, your local Lexus dealer will be pleased to answer
them.