wiring lexus LS400 1998 Engine / LEXUS 1998 LS400 OWNER'S MANUAL (OM50498U)

GAUGES, METERS AND SERVICE REMINDER INDICATORS
38If the brake fluid level is correct ...
Have the warning system checked by your Lexus dealer.
(b) Driver’s Seat Belt Reminder Light and Buzzer
Once the ignition key is turned to ”ON” or ”START”, the reminder
light flashes and buzzer sounds if the driver’s seat belt is not
fastened. Unless the driver fastens the belt, the light stays flashing
and the buzzer stops after about 4 to 8 seconds.
(c) Front Passenger’s Seat Belt Reminder Light
Once the ignition key is turned to ”ON” or ”START”, the reminder
light flashes if a passenger sits in the front passenger seat and does
not fasten the seat belt. Unless the front passenger fastens the belt,
the light stays flashing.
If luggage load is placed on the front passenger seat, depending on
its weight and how it is placed on the seat, builtin sensors in the seat
cushion may detect the pressure, causing the reminder light to come
on.
(d) SRS Warning Light
The indicators come on when the ignition key is turned to the
”ACC” or ”ON” position. It goes off after about 6 seconds. This
means the SRS is operating properly.
The SRS warning light system monitors the airbag sensor
assemblies, inflators, seat belt pretensioners, 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.

COMFORT ADJUSTMENT
87
16L1732
Side airbags
Side airbags:
In response to a severe side impact, the side airbag for the driver
or front passenger works together with the seat belt to help
preventing or reducing injury by inflating, in order to decrease
the impact mainly on the driver or front passenger’s chest.
The side airbag on the passenger seat is activated even with no
passenger in the front seat.
Be sure to wear your seat belt.
CAUTION
SRS side airbags inflate with considerable force. To avoid
potential death or serious injury during inflation of a side
airbag, Lexus strongly recommends that the driver and front
passenger;
Wear their seat belt.
Remain properly seated with their back against the seat at
all times.
16L136-2
The indicator comes on when the ignition key is turned to the
”ACC” or ”ON” position. It goes off after about 6 seconds. This
means the SRS is operating properly.
The SRS warning light system monitors the airbag sensor
assemblies, inflators, seat belt pretensioners, warning light,
interconnecting wiring and power sources.

COMFORT ADJUSTMENT
95
16L179
Do not attach a cup holder or any other device on or around
the door. When the side airbag inflates, the cup holder or
any other device will be thrown with great force, or the side
airbag may not activate correctly, resulting in death or
serious injury. Likewise, the driver and front passenger
should not hold things in their arms or on their knees.
Do not use accessories for the seats which cover the parts
where the side airbags should 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 column cover, front passenger airbag cover,
front seats, airbag sensor assembly or seat belt assemblies.
Doing any of these may cause sudden SRS operation or
disable the system, which could result in death or serious
injury.
Do not modify or replace the seats or surface of the front
seats with side airbags. Such changes may disable the
system or cause the side airbags to inflate, resulting in
death or serious injury. Consult your Lexus dealer.
Failure to follow these instructions can result in death or
serious injuries.

STARTING AND DRIVING
159
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 ”P”. If you need to restart the engine
while the vehicle is moving, put the selector lever in ”N”. 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 you are ready
to drive off.
Starting the engine
Before starting the engine, be sure to follow the instructions in
”Before cranking”.
Normal starting procedure
The multiport fuel injection system/sequential multiport fuel
injection system in your engine automatically controls the proper
airfuel 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 ”START”. 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 ”If your vehicle will not start” on page 193.
NOTICE
Do not crank for more than 30 seconds at a time. This may
overheat the starter and wiring systems.
Do not race a cold engine.
If the engine becomes difficult to start or stalls frequently,
have the engine checked immediately.

DRIVING TIPS
186
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.
Breakin 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
”Owner ’s Manual Supplement/ Maintenance Schedule”.
Retighten all fixing bolts of the towing ball and bracket after
approximately 1000 km (600 miles) of trailer driving.
Pretowing 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
noseup or nosedown 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 regulation. If they do not, install required
rear view mirrors appropriate for towing purposes.

IN CASE OF AN EMERGENCY
194
(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 ”START” 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 ”Foreword”.)
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 ”Foreword”.).
CAUTION
Batteries contain sulfuric acid which is poisonous and
corrosive. Wear protective safety glasses when jump
starting, and avoid spilling acid on your skin, clothing, or
vehicle.
If you should accidentally get acid on yourself or in your
eyes, remove any contaminated clothing and flush the
affected area with water immediately. Then get immediate
medical attention. If possible, continue to apply water with
a sponge or cloth while en route to the medical office.
The gas normally produced by a battery will explode if a
flame or spark is brought near. Use only standardized
jumper cables and do not smoke or light a match while
jump starting.
NOTICE
The battery used for boosting must be 12 V. Do not jump start
unless you are sure that the booster battery is correct.

ELECTRICAL COMPONENTS
260
CHECKING THE CARTRIDGE TYPE
FUSES
64L016-3
1
Good 2
Melted
If the headlights or other electrical components do not work and
the blade type fuses are O.K., check the cartridge type fuses. If
any of the cartridge type fuses are blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses are
designed to blow before the entire wiring harness is damaged.
NOTICE
Before replacing the fuses, have the cause of electrical overload
determined and repaired by your Lexus dealer.
CAUTION
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wireeven for a
temporary fix. This may cause extensive damage and possibly
a fire.