charging lexus LS400 1998 Audio System / LEXUS 1998 LS400 OWNER'S MANUAL (OM50498U)

SWITCHES
32
SEAT HEATER SWITCHES
12L0132
The seat heater has two switches one marked ”L” (for the left
seat) and the other marked ”R” (for the right seat). Push these
switches to turn the respective seat heater on, and push the
switches again to turn them off.
The ignition key must be in the ”ON” position.
CAUTION
Occupants must use caution when operating the seat heater
because it may make them feel too hot or cause burns at low
temperatures (erythema, varicella). Use extra caution for;
Baby, small child, elderly person, sick person or
handicapped person
Persons who have delicate skin
Persons who are exhausted
Persons who have taken alcohol or drugs which induce
sleep (sleeping drug, cold remedy, etc.)
To prevent the seat overheating, do not use the seat heater with
a blanket, cushion, or other insulating objects which cover the
seat.
NOTICE
Do not put unevenly weighted objects on the seat and do not
stick sharp objects (needles, nails, etc.) into the seat.
When cleaning the seats, do not use organic substances
(paint thinner, benzine, alcohol, gasoline, etc.). They may
damage the heater and seat surface.
To prevent the battery from being discharging, turn the
switches on when the engine is running.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
39
(e) 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.
(f) Malfunction Indicator Lamp
This lamp comes on in the following cases.
a. The fuel tank is completely empty. (See ”Fuel gauge” on page 34
for instructions.)
b. The fuel tank cap is not tightened securely. (See ”Fuel tank cap”
on page 65 for instructions.)
c. There is a problem somewhere in your engine electrical system
or electronic throttle control system.
If it comes on while you are driving in case c., have your vehicle
checked/repaired by your Lexus dealer as soon as possible.
(g) ”ABS” Warning Light
This light warns that there is a problem somewhere in your antilock
brake system.
If the light comes on while you are driving, have your vehicle
checked by your Lexus dealer as soon as possible.
The light will come on when the ignition key is turned to ”ON”, and
will go off after about a few seconds.
When the ”ABS” warning light is on (and the brake system warning
light is off), the brake system operates conventionally but antilock
brake system is not assisting brake performance so that the wheels
could lock up during a sudden brake or braking on slippery road
surfaces.
(h) Open Door Warning Light
This light remains on until all the doors are completely closed.

STARTING AND DRIVING
166
(f) Good driving practice
If the transmission repeatedly upshifts and downshifts between
the fourth and overdrive gears when climbing a gentle slope, shift
the selector lever to the ”4” position. Be sure to shift the selector
lever to the ”D” position after climbing the slope.
When towing a trailer, in order to maintain efficient engine
braking and electrical charging performance, do not use
overdrive. The selector lever must be in the ”4” position.
CAUTION
Always keep your foot on the brake pedal while stopped with
the engine running. This prevents the vehicle from creeping.
NOTICE
Do not hold the vehicle on an upgrade with the accelerator
pedal. This can cause the transmission to overheat. Always use
the brake pedal or parking brake.
(g) Rocking your vehicle if stuck
CAUTION
If your vehicle becomes stuck in snow, mud, sand, etc., then
you may attempt to rock the vehicle free by moving it forward
and backward. Do not attempt this procedure if people or
objects are anywhere near the vehicle. During the rocking
operation the vehicle may suddenly move forward or back as
it becomes unstuck, causing injury or damage to nearby
people or objects.
NOTICE
If you rock your vehicle, observe the following precautions to
prevent damage to the transmission and other parts.
Do not depress the accelerator pedal while shifting the
selector lever or before the transmission is completely shifted
to forward or reverse gear.
Do not race the engine and avoid spinning the wheels.
If your vehicle remains stuck after rocking the vehicle several
times, consider other ways such as towing.

DRIVING TIPS
187
Trailer towing tips
When towing a trailer, your vehicle will handle differently than
when not towing. The three main causes of vehicletrailer
accidents are driver error, excessive speed and improper trailer
loading. Keep these in mind when towing:
Before starting out, check the operation of the lights and all
vehicletrailer connections. After driving a short distance, stop
and recheck the lights and connections. Practice turning,
stopping and backing with a trailer in an area away from traffic
until you learn the feel.
Backing with a trailer is difficult and requires practice. Grip the
bottom of the steering wheel and move your hand to the left to
move the trailer to the left. Move your hand to the right to move
the trailer to the right. (This procedure is generally opposite to
that when backing without a trailer.) Also, just turn the steering
wheel a little at a time, avoiding sharp or prolonged turning. Have
someone guide you when backing to reduce the risk of an
accident.
Because stopping distance may be increased, vehicletovehicle
distance should be increased when towing a trailer. For each 16
km/h (10 mph) of speed, allow at least one vehicle and trailer
length between you and the vehicle ahead. Avoid sudden braking
as you may skid, resulting in jackknifing and loss of control. This
is especially true on wet or slippery surfaces.
Avoid jerky starts or sudden acceleration.Avoid jerky steering and sharp turns. The trailer could hit your
vehicle in a tight turn. Slow down before making a turn to avoid
the need of sudden braking.
Remember that when making a turn, the trailer wheels will be
closer than the vehicle wheels to the inside of the turn. Therefore,
compensate for this by making a larger than normal turning radius
with your vehicle.
Crosswinds and rough roads will adversely affect handling of
your vehicle and trailer, causing sway. Pay attention to the rear
from time to time to prepare yourself for being passed by large
trucks or buses, which may cause your vehicle and trailer to sway.
If swaying happens, firmly grip the steering wheel and reduce
speed immediately but gradually. Never increase speed. If it is
necessary to reduce speed, brake slowly. Steer straight ahead. If
you make no extreme correction with the steering or brakes, your
vehicle and trailer will stabilize.
Be careful when passing other vehicles. Passing requires
considerable distance. After passing a vehicle, do not forget the
length of your trailer and be sure you have plenty of room before
changing lanes.
In order to maintain efficient engine braking and electrical
charging performance, do not use overdrive. Transmission must
be in the ”4” position.

IN CASE OF AN EMERGENCY
196
CAUTION
When making the connections, to avoid serious injury, do not
lean over the battery or accidentally let the jumper cables or
clamps touch anything except the correct battery terminals or
the ground.
5. Start your engine in the normal way. After starting, run it at about
2000 rpm for several minutes with the accelerator pedal lightly
depressed.
6. Carefully disconnect the cables in the exact reverse order: the
negative cable and then the positive cable.
7. Carefully dispose of the battery cover cloths which may now
contain sulfuric acid.
8. If removed, replace all the battery vent plugs.
If the cause of your battery discharging is not apparent (for example,
lights left on), you should have it checked.
IF YOUR VEHICLE OVERHEATS
If your engine coolant temperature gauge indicates overheating,
if you experience a loss of power, or if you hear a loud knocking
or pinging noise, the engine has probably overheated.
When the engine overheats
Pull safely off the road, stop the vehicle and turn on your emergency
flashers. Put the transmission in ”P” and apply the parking brake.
A: If steam is coming from your engine:
Turn off the engine. Leave the hood closed until there is no sign of
steam or coolant. Your engine could have been seriously damaged
already. Call your Lexus dealer for assistance.
CAUTION
To help avoid personal injury, keep the hood closed until there
is no steam. Escaping steam or coolant is sign of very high
pressure.

ENGINE
226 COOLING SYSTEM
Capacity
Coolant type
10.8 L (11.4 qt., 10.4 lmp.qt.)
Ethylene glycol coolant (Do not use alcohol type.)
FUEL
Fuel type
Octane rating
Only UNLEADED
91 (Research octane number 96) or higher
IGNITION SYSTEM
Spark plug Make DENSO
NGK
Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
ELECTRICAL SYSTEM
Battery Maintenance type battery
Specific gravity reading at 20C (68F):
Charging rates Quick charge
Slow charge
Nonmaintenance battery
Open voltage at 20C (68F):
Charging rates
1.260 Fully charged
1.160 Half charged
1.060 Discharged
15A max.
5A max.
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is removed with
all the lights turned off]
5A max.

SECTION 6 4
248
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications 249. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition 253. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions 257. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses 258. . . . . . . . . . . . . . . . . . . .
Checking the cartridge type fuses 260. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid 261. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim 261. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs 264. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
251
No.FUSEAMPERECIRCUIT
1 TURN7.5Turn signal lights
2 WIPER20Windshield wipers
3 HEATER10
Air conditioning system,
Rear window defogger, Multiport
fuel injection system/sequential
multiport fuel injection system
4 FR FOG15Fog lights
5 ECUIG10Power steering control system,
Charging system,
Vehicle skid control system
6 PWRIG15
Automatic headlight leveling
system, Moon roof,
Headlight cleaner,
Power seat switch,
Tilt and telescopic steering, Shift
lock system
7 GAUGE10
Gauges and meters, service
reminder indicators and warning
buzzers,
Backup lights,
Vehicle skid control system,
Multiport fuel injection
system/sequential multiport fuel
injection system, Automatic
transmission system
8 IGN10SRS, Multiport fuel injection
system/sequential multiport fuel
injection system
9 RR FOG7.5No circuit
10 FUEL OPN10Fuel opener system
No.FUSEAMPERECIRCUIT
11 RR CIG15Rear cigarette lighter,
Power outlet
12 FR CIG15Front cigarette lighter, SRS
13 A/C7.5Air conditioning system
14 P RR
DOOR20Rear door lock,
Rear power window
15 STOP LP25Stop lights,
High mounted stop light
16 RADIO
NO.215
Audio system,
Outside rear view mirror,
Shift lock system,
Air conditioning system
17 PANEL7.5Instrument panel lights,
Air conditioning system, Glovebox
light, Audio system
18 STARTER7.5
Starting system,
Automatic transmission system,
Multiport fuel injection
system/sequential multiport fuel
injection system
19 TAIL7.5Tail lights, Side marker lights,
License plate lights
20 STOPS7.5
Shift lock system,
Height control system, Antilock
brake system,
Vehicle skid control system
21 RR S/HTR15No circuit
22 WASHER20Windshield washer

ELECTRICAL COMPONENTS
252
No.FUSEAMPERECIRCUIT
23 AIR SUS20Height control system
24 D RR
DOOR20Rear door lock,
Rear power window
25 HORN10Horns
26 ETCS15Electronic throttle control system
27 HLP L
UPR10Lefthand headlight (high beam)
28 HLP R
UPR10Righthand headlight (high beam)
29 EFI NO.210Emission control system
30 MIRHTR15Outside rear view mirror defogger
31 FR S/HTR15Seat heater
32 ALTS7.5Charging system
33 TEL15Telephone
34 CRT15Multi information display
35 RADIO
NO.120Audio system
36 MPXB10Power window, Door lock,
Tilt and telescopic steering
37 ECUB7.5Vehicle skid control system,
Daytime running light system
38 HAZ10Emergency flashers
No.FUSEAMPERECIRCUIT
39 EFI NO.120Multiport fuel injection
system/sequential multiport fuel
injection system
40 DOME10Interior light, Vanity lights,
Foot lights, Rear personal light,
Garage door opener
41 OBD7.5Onboard diagnosis system
42 DRL10Vehicles sold in Canada
Daytime running light system
43 HLP R
LW R15Righthand headlight (low beam)
44 HLP L
LW R15Lefthand headlight (low beam)

ELECTRICAL COMPONENTS
256(b) Checking by the hydrometer
64L010
Check the battery condition by the hydrometer color.
Maintenance type battery
1
BLUE Good condition.
2
WHITE Charging necessary. Have the battery checked by
your Lexus dealer.
3
RED Add distilled water. (See ”Adding distilled water” on
page 257.)
Nonmaintenance type battery
1
BLUE Good condition.
2
WHITE Charging necessary. Have the battery checked by
your Lexus dealer.
3
RED Have the battery checked by your Lexus dealer.
NOTICE
(For nonmaintenance type battery):
Do not refill the battery with water.