wiring Lexus ES300 2001 Owner's Manuals (in English)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
63
(b) Seat Belt Reminder Light and Buzzer
This light and buzzer remind you to buckle up the driver's
seat belt.
Once the ignition key is turned to ªONº or ªSTARTº, the
reminder light and buzzer come on if the driver's seat
belt is not fastened. Unless the driver fastens the belt,
the light stays on and the buzzer stops after about 4 to
8 seconds.
(c) SRS Warning Light
This light comes on when the ignition key is turned
to the ªACCº or ªONº position. It goes off after
about 6 seconds. This means the SRS airbags and
seat belt pretensioners are operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side airbag sensors,
front seat belt pretensioner assemblies, inflators,
warning light, interconnecting wiring and power sources.
If either of the following conditions occurs, this indicates
a malfunction somewhere in the parts monitored by the
warning light system. Contact your Lexus dealer as
soon as possible to service the vehicle.
 The light does not come on as described above.
 The light stays on or flashes.
 The light comes on or starts flashing while driving.
If the light stays on, it indicates that the driver and front passenger airbags fail. If the light flashes, the side
airbags and/or seat belt pretensioners fail.
(d) 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.

COMFORT ADJUSTMENT
148
16E179
This indicator comes on when the ignition key is
turned to the ªACCº or ªONº position. It goes off
after about 6 seconds. This means the front seat belt
pretensioners are operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side airbag sensors,
front seat belt pretensioner assemblies, inflators,
warning light, interconnecting wiring and power sources.
(For details, see ªService reminder indicators and
warning buzzersº on page 60 for instructions.)

COMFORT ADJUSTMENT
150
CAUTION
Do not modify, remove, strike or open the front seat belt
pretensioner assemblies, airbag sensor or surrounding
area or wiring. Doing any of these 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.
NOTICE
Do not perform any of the following changes without consulting your Lexus dealer. Suchchanges can interfere with proper operation of the
front seat belt pretensioners in some cases.
Installation of electronic devices such as a mobile two±way radio, cassette tape player orcompact disc player
Repairs on or near the front seat belt retractorassemblies
Modification of the suspension system
Modification of the front end structure
Attachment of a grille guard (bull bar, kangaroobar, etc.), snowplow, winches or any otherequipment to the front end
Repair made on or near the front fenders, frontend structure or console

COMFORT ADJUSTMENT
156
CAUTION
SRS side airbags inflate with considerable force. To
avoid potential death or serious injury when they inflate,
the driver and front passenger must:
 Wear their seat belts properly.
 Remain properly seated with their back upright and
against the seat at all times.
16E179
The indicator comes on when the ignition key is
turned to the ªACCº or ªONº position. It goes off
after about 6 seconds. This means the SRS airbags
are operating properly.
This warning light system monitors the airbag sensor
assembly, front airbag sensors, side airbag sensors,
front seat belt pretensioner assemblies, inflators,
warning light, interconnecting wiring and power sources.
(For details, see ªService reminder indicators and
warning buzzersº on page 60 for instructions.)

COMFORT ADJUSTMENT
172
Do not use accessories for the seats 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, strike or open any
components, such as the steering wheel pad,
steering wheel, column cover, front passenger
airbag cover, front seats or airbag sensor
assembly. Doing any of these may cause
sudden SRS airbag inflation or disable the
system, which could result in death or serious
injury.
 Do not modify or replace the seats or
upholstery of the front seats with the side
airbags. Such changes may disable the system
or cause the side airbags to inflate accidentally,
resulting in death or serious injury. Consult
your Lexus dealer if you insist on modifications
of this kind.
Failure to follow these instructions can result in
death or serious injury.NOTICE
Do not perform any of the following changes without consulting your Lexus dealer. Suchchanges can interfere with proper operation of the
SRS in some cases.
Installation of electronic devices such as a mobile two±way radio, cassette tape player orcompact disc player
Modification of the suspension system
Modification of the front end structure and sidestructure of the passenger compartment
Attachment of a grille guard (bull bar, kangaroobar, etc.), snowplow, winches or any otherequipment to the front end
Repairs made on or near the front fenders, front
end structure, console, steering column, steering wheel, dashboard near the frontpassenger airbag or front seats

STARTING AND DRIVING
283
HOW TO START THE ENGINE
Before cranking
1. Apply the parking brake firmly.
2. Turn off unnecessary lights and accessories.
3. Put the selector lever in ªPº. If you need to restart the
engine while the vehicle is moving, put the selector lever
in ªNº. A starter safety device will prevent the starter
from operating if the selector lever is in any drive
position.
4. Depress the brake pedal and hold it to the floor until
driving off.
Starting the engine
Before starting the engine, be sure to follow the
instructions in ªBefore crankingº.
Normal starting procedure
The multiport fuel injection system/sequential multiport
fuel injection system in your engine automatically
controls the proper air±fuel mixture for starting. You can
start a cold or hot engine as follows:
1. With your foot off the accelerator pedal, crank the
engine by turning the key to ªSTARTº. Release it when
the engine starts.
2. After the engine runs for about 10 seconds, you are
ready to drive. If the weather is below freezing, let the engine warm up
for a few minutes before driving. Do not leave the vehicle
while the engine is warming up.
If the engine stalls ...
Simply restart it , using the correct procedure given in
normal starting.
If the engine will not start
See ªIf your vehicle will not startº on page 343.
NOTICE
Do not crank for more than 30 seconds at a
time. This may overheat the starter and wiringsystems.
Do not race a cold engine.
If the engine becomes difficult to start or stallsfrequently, have the engine checkedimmediately.

DRIVING TIPS
333
Tires
Ensure that your vehicle's tires are properly inflated.
Adjust the tire pressure to the recommended cold tire
pressure indicated below:
Tire pressure, kPa (kgf/cm
2 or bar, psi)
Front 220 (2.2, 32)
Rear 220 (2.2, 32)
 The trailer tires should be inflated to the pressure
recommended by the trailer manufacturer in respect
to the total trailer weight.
Trailer lights
Trailer lights must comply with federal,
state/provincial and local regulations. See your local
recreational vehicle dealer or rental agency for the
correct type of wiring and relays for your trailer.
Check for correct operation of the turn signals and
stop lights each time you hitch up. Direct splicing may
damage your vehicle's electrical system and cause a
malfunction of your lights.
Break±in schedule
 Lexus recommends that you do not tow a trailer with
a new vehicle or a vehicle with any new power train
component (engine, transmission, differential, wheel
bearing, etc.) for the first 800 km (500 miles) of
driving.
Maintenance
If you tow a trailer, your vehicle will require more
frequent maintenance due to the additional load. For
this information, please refer to the scheduled
maintenance information in the ªOwner's Manual
Supplement/ Maintenance Scheduleº.
 Retighten all fixing bolts of the towing ball and bracket
after approximately 1000 km (600 miles) of trailer
driving.
Pre±towing safety check
 Check that your vehicle remains level when a loaded
or unloaded trailer is hitched. Do not drive if the
vehicle has an abnormal nose±up or nose±down
condition, and check for improper tongue load,
overload, worn suspension or other possible causes.
 Make sure the trailer cargo is securely loaded so that
it cannot shift.
 Check that your rear view mirrors conform to any
federal, state/provincial or local regulations. If they
do not, install required rear view mirrors appropriate
for towing purposes.

IN CASE OF AN EMERGENCY
344
(b) Starting a flooded engine
If the engine will not start, your engine may be
flooded because of repeated cranking.
If this happens, turn the key to ªSTARTº with the
accelerator pedal held down. Continue this operation for
30 seconds and then stop cranking. Then try starting the
engine with your foot off the accelerator pedal.
If the engine does not start after 30 seconds of cranking,
release the key, wait a few minutes and try again.
If the engine still will not start, it needs adjustment or
repair. Call a Lexus dealer, Roadside Assistance or
Customer Service Assistance. (See ªForewordº.)
NOTICE
Do not crank for more than 30 seconds at a time. This may overheat the starter and wiring systems.
(c) Jump starting
To avoid serious personal injury and damage to
your vehicle which might result from battery
explosion, acid burns, electrical burns, or damaged
electronic components, these instructions must be
followed precisely.
If you are unsure about how to follow this procedure, we
strongly recommend that you seek help from your Lexus
dealer, Roadside Assistance or Customer Service
Assistance. (See ªForewordº.)

ELECTRICAL COMPONENTS
463
64E016

1Type A 2Type B 3Good 4Blown
If there is an overload in the circuits from the battery, the
fuses are designed to blow before the entire wiring
harness is damaged.
CAUTION
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire ± even for
a temporary fix. This may cause extensive damage and
possibly a fire.
NOTICE
Before replacing the fuses, have the cause ofelectrical overload determined and repaired byyour Lexus dealer.