2006 LEXUS LS430 charging

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1-5. Opening the fuel tank cap
1
Before driving
CAUTION
■Refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so may
r
esult in death or serious injury.
• Touch the vehicle or some other metal surf ace to dischar
ge any static electricity.
Sparks resulting from discharging static electricity may cause the fuel vapors to
ignite.
• Always hold the grip on the fuel tank cap and turn it slowly to remove it. A whooshin
g sound may be heard when the fu el tank cap is loosened. Wait until
the sound cannot be heard before fully removing the cap. In hot weather, pres -
surized fuel may spray out the filler neck and cause injury.
• Do not allow any one that has not discharge
d static electricity from their bodies,
to come close to an open fuel tank.
• Do not inhale vaporized fuel. 
Fuel contains substances that are harmful to the human body, if inhaled.
• Do not smoke while refueling the vehicle. 
Doing so may cause the fuel to ignite and cause a fire.
• Do not return to the vehicle or touch an y perso
n or object that is statically
charged. 
This may cause static electricity to build up, resulting in a possible ignition haz -
ard.
■Fuel cap precaution
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle.
F

ailure to do so may cause a fire or other incident which may result in death or seri -
ous injury.
NOTICE
■Refueling
Observe the following precautions when refueling the vehicle. 
Failing to do so damages the vehicle, su ch
as causing the exhaust systems to oper -
ate abnormally or damaging fuel system c
omponents or the vehicle’s painted sur-
face.
• Do not use any type of gasoline other than as recommended. ( P.373 )
• Do not spill fuel during refueling.

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2-5. Driving information
2
When driving
• As stopping distance is increased when towing a trailer, vehicle-to-
vehicle distance should be increas ed. For each 10 mph (16 km/h) of
speed, allow at least one vehicle and trailer length.
• Avoid sudden braking as you may sk id, r
esulting 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 turn s, and slo
w down before making a
turn.
• Note that when making a turn, the tr ailer wheels will be closer than the
v
ehicle wheels to the inside of th e turn. Compensate by making a
larger than normal turning radius.
• Crosswinds and rough roads will ad v
ersely affect handling of your
vehicle and trailer, causing sway. Peri odically check the rear to prepare
for being passed by large trucks or buses, which may cause your vehi-
cle and trailer to sway. If s
waying occurs, firmly grip the steering wheel,
reduce speed immediately but gradually, and steer straight ahead.
Never increase speed. If you make no extreme correction with the
steering or brakes, your vehi cle and trailer will stabilize.
• Take care when passing other vehicl es. P
assing 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 br
aking and electrical charging
performance, do not use overdrive. Transmission shift range position
must be in “4”, in the “S” mode.
• Due to the added load of the traile r
, your vehicle’s engine may overheat
on hot days (at temperatures over 85°F [30°C]) when driving up a
long or steep grade. 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 “If your vehicle
overheats” ( P.359 ).

274
4-3. Do-it-yourself maintenance
■Checking battery condition
Check the battery condition by the indicator color.
Blue: 
Good condition
White: 
Charging necessary. Have the
batter
y checked by your Lexus
dealer.
Red: 
Have the battery checked by
y
our Lexus dealer.
1
2
3
■Before recharging
Recharging, the battery produces hydrogen gas which is flammable and explosive.
Be

fore recharging:
• If recharging with the battery installe d in the vehicle, be sure to dis-
connect the ground cable.
• Make sure the power switch on th e r
echarger is off when connecting
and disconnecting the char ger cables to the battery.

276
4-3. Do-it-yourself maintenance
CAUTION
■How to recharge the battery
Only perform a slow charge (5 A or less). T
he battery may explode if charged at a
quicker rate.
NOTICE
■When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all accesso -
ries are turned off.

301
4-3. Do-it-yourself maintenance
4
Maintenance and care
FuseAmpereCircuit
LUG J/B50
All components in "RR SEAT RH", "RR
SEAT LH", "S/ROOF, "AMP", "RRIG", "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
ABS 250Vehicle stability control system
HEATER50Air conditioning system
ABS 130Vehicle stability control system
DEFOG40Rear window defogger
AIR SUS40Electronically modulated air suspension
system
R/B60
All components in "FR FOG", "TAIL",
"WASHER", "FR IG", "WIP", "H-LP CRN",
and "A/C IG"
FA N80Air conditioning system
D-J/B80
All components in "TI &TE", "DP/SEAT",
"A/C" "OBD", "STOP", "AM1", "MPX-IG",
"ABS-IG", "GAUGE", "AIRSUS", "D S/
HTR", "SECURITY", "PANEL", "D B/
ANC", "POWER OUTLET", "D-CIG", "D
RR-IG" and "D-ACC"
A LT140Charging system
P-J / 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"
B AT T30All components in "RADIO NO.1", "AM2",
"HAZ" and "STR LOCK"
ST30Starting system
D/C CUT20All components in "DOME", "MPX-B1",
and "MPS-B3"
A LT- S5Charging system
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2
3
4
5
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7
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9
10
11
12
13
14
15

302
4-3. Do-it-yourself maintenance
■Engine compartment fuse box (with out electronically modulated air
suspension)
FuseAmpereCircuit
ABS 250Vehicle stability control system
HEATER50Air conditioning system
ABS 130Vehicle stability control system
DEFOG40Rear window defogger
AIR SUS40Electronically modulated air suspension
system
FA N50Air conditioning system
R/B60
All components in "FR FOG", "TAIL",
"WASHER", "FR IG", "WIP", "H-LP CRN",
and "A/C IG"
FA N80Air conditioning system
D-J/B80
All components in "TI &TE", "DP/SEAT",
"A/C" "OBD", "STOP", "AM1", "MPX-IG",
"ABS-IG", "GAUGE", "AIRSUS", "D S/
HTR", "SECURITY", "PANEL", "D B/
ANC", "POWER OUTLET", "D-CIG", "D
RR-IG" and "D-ACC"
A LT140Charging system
P-J / 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"
B AT T30All components in "RADIO NO.1", "AM2",
"HAZ" and "STR LOCK"
1
2
3
4
5
6
7
8
9
10
11
12

303
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Engine compartment fuse box
FuseAmpereCircuit
ST30Starting system
D/C CUT20All components in "DOME", "MPX-B1",
and "MPS-B3"
A LT- S5Charging system
FuseAmpereCircuit
H-LP R LWR15Right-hand headlight (low beam)
H-LP L LWR15Left-hand headlight (low beam)
EFI NO.27. 5Multiport fuel injection system/sequential
multiport fuel injection system
S TA7. 5Multiport fuel injection system/sequential
multiport fuel injection system
INJ10Multiport fuel injection system/sequential
multiport fuel injection system
IGN7. 5Multiport fuel injection system/sequential
multiport fuel injection system
FR IG7. 5
Electric cooling fan, Headlight cleaner,
Charging system, Starting system, Rear
window defogger
A/C IG7. 5Air conditioning system
WIP30Windshield wiper
A/C15Fog lights
WA S H E R20Windshield washer
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3
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5
When trouble arises
329
5-2. Steps to take in an emergency
If the charging system warning light comes on, stop the vehicle immedi-
ately.
The following warnings indicate the pos
sibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Warning lightsWarning light/Details
Discharge warning light
Indicates a malfunction in the vehicle’s charging
system.