1999 Lexus ES300 charging

SWITCHES
49
NOTICE
Do not put unevenly weighted objects on theseat and do not stick sharp objects (needles,nails, etc.) into the seat.
When cleaning the seats, do not use organicsubstances (paint thinner, benzine, alcohol,gasoline, etc.). They may damage the heaterand seat surface.
To prevent the battery from being discharging,turn the switches on when the engine isrunning.

GAUGES, METERS AND SERVICE REMINDER INDICATORS
61
(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.
(e) Low Oil Pressure Warning Light
This light warns that the engine oil pressure is too low.
If it flickers or stays on while you are driving, pull off the
road to a safe place and stop the engine immediately.
Call a Lexus dealer or qualified repair shop for
assistance.
The light may occasionally flicker when the engine is
idling or it may come on briefly after a hard stop. There
is no cause for concern if it then goes out when the
engine is accelerated slightly.
The light may come on when the oil level is extremely
low. It is not designed to indicate low oil level, and the
oil level must be checked using the oil level dipstick.
NOTICE
Do not drive the vehicle with the warning light on± even for one block. It may ruin the engine.

STARTING AND DRIVING
272
(f) Good driving practice
If the transmission repeatedly upshifts and
downshifts between the third and overdrive gears
when climbing a gentle slope, turn off the overdrive
switch. Be sure to turn the switch on immediately
after climbing the slope.
 When towing a trailer, in order to maintain efficient
engine braking and electrical charging performance,
do not use overdrive.
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 thetransmission to overheat. Always use the brakepedal 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 un±stuck, causing
injury or damage to nearby people or objects.

DRIVING TIPS
307
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 l ength 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.
 Because of the added load of the trailer, your vehicle's
engine may overheat on hot days (at temperatures
over 30C [85F]) when going up a long or steep
grade with a trailer. If the engine coolant temperature
gauge indicates overheating, immediately turn off the
air conditioning (if in use), pull your vehicle off the
road and stop in a safe spot. See ºIf your vehicle
overheatsº on page 319 of this manual.
 Always place wheel blocks under both the vehicle
and trailer wheels when parking. Apply the parking
brake firmly. Put the transmission in ºPº. Avoid

IN CASE OF AN EMERGENCY
319
(black) cable to a solid, stationary, unpainted
metallic point (e.g. cylinder head) away from the
battery. Do not connect it to or near any part that
moves when the engine is cranked.
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.

ENGINE
372± 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 20 C (68F):
Charging rates Quick charge Slow charge
± Non±maintenance 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
408
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications409
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition 415
. . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions 422
. . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses 423
. . . . .
Checking the cartridge type fuses 429
. . . . . . . . . . . . . . .
Adding washer fluid 432
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim 432
. . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs 435
. . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL COMPONENTS
412
No.FUSEAMPERECIRCUIT
1 ABS60Anti±lock brake system
2 DRL NO.25Daytime Running Light System
3 HEAD
LH (LWR)10Left±hand headlight (low beam)
4 HEAD
RH (LWR)10Right±hand headlight (low
beam)
5 ALT100Charging system
6 T±STK40No circuit
7 HTR50Air conditioning system, Seat
heater
8 MAIN40Headlight, Starting system
9 DOME7.5
Theft deterrent system, Clock,
Door courtesy light, Interior
light, Ignition switch light, Vanity
light, Wireless remote control
system
10 ECU±B10Air conditioning system,
Power seat system
11 RAD NO.120Audio system
12 HAZARD10Emergency flashers, Turn
signal lights