2005 LEXUS LS430 charging

GAUGES, METERS AND SERVICE REMINDER INDICATORS
86
(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 when the ignition switch is turned to
the “ON” position and goes off after the engine starts.
This means that the warning light system is operating
properly.
If the lamp remains on, or the lamp comes on while
driving, first check the following:
 Empty fuel tank
If the fuel tank is empty, refuel immediately.
 Loose fuel tank cap
If the fuel tank cap is loose, securely tighten it.
These cases are temporary malfunctions. The malfunction
indicator lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your
Lexus dealer as soon as possible.
If the fuel tank is not empty or the fuel tank cap is not
loose...
 There is a problem somewhere in the engine, emission
control system, electronic throttle control system, automatic
transmission electrical system or warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
If this lamp comes on and engine speed does not increase
when the accelerator pedal is depressed, there may be a
problem somewhere in the electronic throttle control system.

STARTING AND DRIVING
314
(e) Parking
31L325
 1Parking brake pedal 2Brake pedal
3“P” (Park) position
1. Bring the vehicle to a complete stop.
2. Depress the parking brake pedal fully to securely apply the
parking brake.
3. With the brake pedal held down with your foot, shift the
selector lever to the “P” position.
CAUTION
Never attempt to move the selector lever into “P” under
any circumstances while the vehicle is moving. Serious
mechanical damage and loss of vehicle control may
result.
(f) Good driving practice
 If the transmission repeatedly shifts up and down between
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
Always use the brake pedal or the parking brake to hold
the vehicle on an upgrade. Do not attempt to hold the
vehicle using the accelerator pedal, as this can cause
the transmission to overheat.

DRIVING TIPS
390
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
vehicle −trailer 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,
vehicle −to −vehicle 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. T ransmission
shift range position must be “4” (fourth range) in the “S”\
mode.

IN CASE OF AN EMERGENCY
403
When boosting, use the battery of matching or higher quality.
Any other battery may be difficult to jump start with.
If jump starting is difficult, charge the battery for several
minutes.
2. If required, remove all the vent plugs from the booster
battery. Lay a cloth over
the open vents on the booster battery.
(This helps reduce the explosion hazard, personal injuries and
burns.)
If the booster battery is an extended maintenance interval
battery, it is not necessary to remove the vent plugs.
3. If the engine in the vehicle with the booster battery is not
running, start it and let it run for about 5 minutes. During jump
starting, run the engine at about 2000 rpm with the accelerator
pedal lightly depressed.
4. Locate positive (+) and negative (–) terminals of each
battery. Connect the jumper cables in the exact order (
1 2 3 4) shown in the illustration.
1 Connect a positive (red) jumper cable clamp to the
positive (+) terminal of the discharged battery.
2Connect the clamp at the other end of the positive (red)
cable to the positive (+) terminal of the booster battery.
3Connect a negative (black) cable clamp to the negative
(–) terminal of the booster battery.
4Connect the clamp at the other end of the negative (black)
cable to a solid, stationary, unpainted metallic point (such
as shown in the illustration) 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 at your
Lexus dealer.
If the first start attempt is not successful...
Check that the clamp on the jumper cables are tight. Recharge
the discharged battery with the jumper cables connected for
several minutes and restart your engine in the normal way.
If another attempt is not successful, the battery may be
depleted. Have it checked at your Lexus dealer.

ENGINE
446318.– COOLING SYSTEM
Capacity
9.5 L (10.0 qt., 8.4 lmp.qt.)
Coolant type“Toyota Super Long Life Coolant” or similar high quality ethylene glyco\
l
based non −silicate, non −amine, non −nitrite, and non −borate coolant
with long− life hybrid organic acid technology (Coolant with long −life
hybrid organic acid technology is a combination of low phosphates and
organic acids.)
Do not use plain water alone.
NOTE:
“Toyota Super Long Life Coolant” is used in your Lexus vehicle at factory fil\
l. In order to avoid technical problems, only use “Toyota
Super Long Life Coolant” or similar high quality ethylene glycol based non −silicate, non −amine, non −nitrite, and non −borate coolant
with long−life hybrid organic acid technology. (Coolant with long −life hybrid organic acid technology is a combination of low
phosphates and organic acids.) Do not use plain water alone. Please contact you\
r Lexus dealer for further details.
– IGNITION SYSTEM319.
Spark plug – Make DENSO NGK
– Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
– ELECTRICAL SYSTEM320.
Battery – Open voltage at 20 C (68F):
– Charging rates
12.7 V Fully charged
12.3 V Half charged
11.9 V Discharged
[Voltage that is checked 20 minutes after the key is removed with all the
lights turned off]
5A max.

SECTION 6 – 4
487
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications488
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
Checking battery condition 496
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions 499
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses 499
. . . . . . . . . . . . . . . .
Checking the cartridge type fuses 502
. . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid 503
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
Checking the headlight aim 504
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs 505
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

ELECTRICAL COMPONENTS
495
No.FUSEAMPERECIRCUIT
59 R/B60
All components in “FR FOG”,
“TAIL”, “WASHER”, “FR IG”,
“WIP”, “H−LP CRN” and “A/C
IG”
60 FA N80Air conditioning system
61 DJ/B80
All components in “TI & TE”, “D
P/SEAT”, “A/C”, “OBD”,
“STOP”, “AM1”, “MPX −IG”,
“ABS− IG”, “GAUGE”,
“AIRSUS”, “D S/HTR”,
“SECURITY”, “PANEL”, “D
B/ANC”, “PWR OUTLET”,
“D− CIG”, “D RR− IG” and
“D−ACC”
62 ALT140Charging system
63 PJ/B80
All components in “RR DOOR
RH”, “RR DOOR LH”, “D
DOOR”, “H− LP LVL”, “P
DOOR”, “P S/HTR”, “P− IG”,
“P− ACC”, “P B/ANC”, “P −CIG”,
“TEL” and “P RR −IG”
64 BATT30All components in “RADIO
NO.1”, “AM2”, “HAZ” and “STR
LOCK”
65 ST30Starting system
66 D/C CUT20All components in “DOME”,
“MPX− B1”, “MPX− B2” and
“MPS−B3”
67 ALTS5Charging system
68 FA N50Air conditioning system
No.FUSEAMPERECIRCUIT
69 LUG J/B60
All components in “RR SEAT
RH”, “RR SEAT LH”, “S/ROOF”,
“AMP”, “RR IG”, “RR ECU −B”,
“P P/SEAT”, “RR S/HTR”, “RR
S/SHADE”, “RR A/C”, “RR
ACC”, “FUEL OPN” and “LCE
LP”, Tail lights and Stop lights
70 HLP R
LW R15Right− hand headlight (low
beam)
71 HLP L
LW R15Left− hand headlight (low beam)
72 EFI NO.27.5Multiport fuel injection
system/sequential multiport fuel
injection system
73 STA7.5Multiport fuel injection
system/sequential multiport fuel
injection system
74 INJ10Multiport fuel injection
system/sequential multiport fuel
injection system
75 IGN7.5Multiport fuel injection
system/sequential multiport fuel
injection system
76 FR IG7.5
Electric cooling fan, Headlight
cleaner, Charging system,
Starting system, Rear window
defogger
77 A/C IG7.5Air conditioning system
78 WIP30Windshield wiper

ELECTRICAL COMPONENTS
498
NOTICE
Make sure the engine and all accessories are turned
off before performing maintenance.
 When checking the battery, remove the ground cable
first and reinstall it last.
 Be careful not to cause a short circuit with tools.
 Take care no solution gets into the battery when
washing it.
Checking battery condition
Checking by indicator
64L086a
Check the battery condition by the indicator color.
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
Do not refill the battery with water.