2006 Lexus GS430 charging

GAUGES, METERS AND SERVICE REMINDER INDICATORS
77
(f) 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.
(g) Malfunction Indicator Lamp
This lamp comes on when the engine switch is selected in
“IGON” mode 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 followings:
 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.

IN CASE OF AN EMERGENCY
466
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. Charge the discharged battery with the jumper cables
connected for approximately 5 minutes. At this time, run the
engine in the vehicle with the booster battery at about 2000
rpm with the accelerator pedal lightly depressed.
6. Start your engine in the normal way. After starting, run it at
about 2000 rpm for several minutes with the accelerator pedal
lightly depressed.
7. Carefully disconnect the cables in the exact reverse order:
the negative cable and then the positive cable.
8. Carefully dispose of the battery cover cloths which may now
contain sulfuric acid.
9. 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.
IF YOU CANNOT INCREASE ENGINE SPEED
If engine speed does not increase when the accelerator
pedal is depressed, there may be a problem somewhere
in the electronic throttle control system. Move the vehicle
to a safe place by means of creeping and call a Lexus
dealer for assistance:
1. Depress the brake pedal and shift to the “D” position.
2. Gradually release the brake pedal, and the vehicle starts to
move by creeping. After arriving at a safe place, stop the
vehicle and call a Lexus dealer for assistance.
CAUTION
 The above method of moving the vehicle is for
emergency. Use it only for moving minimum
distances to a safe place.
 Be especially careful to prevent erroneous pedal
operation.

ENGINE
514– COOLING SYSTEM
Capacity
10.1 L (10.7 qt., 8.9 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 SYSTEM
Spark plug – Make DENSO NGK
– Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
– ELECTRICAL SYSTEM
Battery – Open voltage at 20 C (68F):
– Charging rates
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the engine switch is off with all
the lights turned off]
5A max.

ENGINE
517
– COOLING SYSTEM
Capacity
9.1 L (9.6 qt., 8.0 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 SYSTEM
Spark plug – Make DENSO NGK
– Gap
FK20HBR11
ILFR6D11T
1.1 mm (0.043 in.)
– ELECTRICAL SYSTEM
Battery – Open voltage at 20 C (68F):
– Charging rates
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the engine switch is off with all
the lights turned off]
5A max.

SECTION 6 – 4
563
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications564
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
Checking battery condition 571
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions 574
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses 574
. . . . . . . . . . . . . . . .
Checking the cartridge type fuses 577
. . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid 579
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
.
Checking the headlight aim 579
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs 584
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

ELECTRICAL COMPONENTS
567
No.FUSEAMPERECIRCUIT
18 FR DOORRH20
Front right door control system
(Power door lock system,
Power rear view mirror control
system, Door courtesy light,
Outside rear view mirror heater,
Power window), Multiplex
communication system
19 RR DOOR RH20Rear right door control system
(Power door lock system, Door
courtesy light, Power window)
20 RR DOOR LH20Rear left door control system
(Power door lock system, Door
courtesy light, Power window)
21 FR DOORLH20
Front left door control system
(Power door lock system,
Power rear view mirror control
system, Door courtesy light,
Outside rear view mirror heater,
Power window)
22 RAD NO.310Audio system
23 HLP LVL7.5Adaptive front lighting system
(AFS), Automatic headlight
leveling control system
No.FUSEAMPERECIRCUIT
24 LHIG10
Charging system, Headlight
cleaners, Exhaust gas sensor,
Rear window defogger, Electric
cooling fans, Rear left door
control system, Front left door
control system, Emergency
flashers, Automatic
transmission, Seat belt
pretensioners, Intuitive parking
assist
25 FR WIP30Windshield wipers and washer
26 PANEL7.5
Steering switch illumination,
Audio system, Glove box light,
Automatic transmission selector
lever illumination, Console box
light, Adaptive variable
suspension switch illumination,
Cigarette lighter illumination, Air
conditioning system, Traction
control off switch illumination,
Driving pattern selector switch,
Seat heater or Heated and
ventilated seat switches,
Register ILL RH, Register ILL
LH, Register ILL CTR
27 FUEL
OPEN10Fuel filler door opener, Trunk lid
opener

ELECTRICAL COMPONENTS
570
No.FUSEAMPERECIRCUIT
70 A/F15Multi−port fuel injection
system/sequential multiport fuel
injection system
71 ETCS10Multi−port fuel injection
system/sequential multiport fuel
injection system
72 ALTS7.5Charging system
73 EM VLV10No circuit
74 HLP CLN30Headlight cleaner system
75 A/C COMP7.5Air conditioning system
76 DEICER25No circuit
77 FR
CTRLAM30“FR TAIL”, “FR FOG” and
“WASHER”
78 IG210Starting system
79 EFI NO.210
Multi− port fuel injection
system/sequential multiport fuel
injection system, Evaporative
system
80 HLP R
LW R15Right− hand headlight (low
beam)
81 HLP L
LW R15Left− hand headlight (low beam)
82 F/PMP25Fuel pump
No.FUSEAMPERECIRCUIT
83 EFI
GS430:
25
GS300: 25Multi− port fuel injection
system/sequential multiport fuel
injection system
84 INJ20Multi− port fuel injection
system/sequential multiport fuel
injection system
85 HLP UPR15Headlights (high beam)
86 HORN10Horn
87 WASHER20Windshield wipers and washer
88 FR TAIL10Parking lights, Side marker
lights
89 FR FOG15Front fog lights
90 RR
S/SHADE7.5Rear electric sunshade
91 PSB30Pre− collision system
92 RRIG210No circuit
93 RRIG110Pre− collision system, Rear
electric sunshade, Seat belt
pretensioners
94 RRB10Luggage compartment light,
Noise filter
95 RR FOG7.5Rear fog lights
96 STOP LP L10Stoplights, Back up lights

ELECTRICAL COMPONENTS
573
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.
If the battery is disconnected or run down
The following functions may not operate correctly when you
reconnect or replace the battery. In these cases, you should
normalize each system referring to the following pages.
Power windows (See page 59.)
 Moon roof (See page 134.)
 Variable gear ratio steering system (See page 424.)
 Intuitive parking assist (See page 380.)
Checking battery condition
Checking by indicator
G64009
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.