Lexus RX300 2006, RX330 2006, RX350 2006, RX400H 2006 Owner Manual
SECTION 6 –
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications 665. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking battery condition 676. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery recharging precautions 682. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the blade type fuses 683. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the cartridge type fuses 685. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid 688. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the headlight aim 689. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing light bulbs 690. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
664
ELECTRICAL COMPONENTS
SPECIFICATIONS
— FUSE LOCATIONS
1
Engine compartment
2 3
Driver’s side instrument panel
— FUSES
Engine compartment
(with electronically modulated air suspension)
665
ELECTRICAL COMPONENTS
Engine compartment
(without electronically modulated air suspension)
64RY043
Driver’s side instrument panel
666
No. FUSE AMPERE CIRCUIT
1 AIRSUS 60
2 INP-J/B 100
Electronically modulated air
suspension
All components in “HEATER”,
“H-LP CLN”, “TAIL”, “PANEL”,
“FR FOG”, “CIG”, “RADIO NO.
2”, “ECU-ACC”, “PWR OUTLET
NO. 1”, “GAUGE NO. 1”,
“ECU-IG NO. 1”,“ FR WIP”, “RR
WIP”, “WASHER”, “SEAT HTR”,
“ECU-IG NO. 2”, “P/SEAT”,
“PWR”, “TI&TE”, “RR DOOR
LH”, “RR DOOR RH”, “MPX-B”,
“AM1”, “DOOR NO. 2”, “STOP”,
“OBD”, “FUEL OPN”, “AIRSUS”
(7.5 A), “S/ROOF”, “FR DEF”
and “RR FOG” fuses
ELECTRICAL COMPONENTS
667
ELECTRICAL COMPONENTS
No. FUSE AMPERE CIRCUIT
All components in “INP-J/B”,
“AIRSUS” (60 A), “ABS NO. 1”,
“ABS NO. 2”, “RDI FAN”, “RR
DEF”, “HEATER”, “PBD”, “H-LP
CLN/MSB”, “H-LP CLN”, “PWR
OUTLET NO. 2”, “TOWING”,
“TAIL”, “PANEL”, “FR FOG”,
“CIG”, “RADIO NO. 2”,
“ECU-ACC”, “PWR OUTLET
3 ALT 140
4 PBD 30 Power back door
H-LP
5
CLN/MSB
6 H-LP CLN 30 Headlight cleaner
30 Headlight cleaner
NO. 1”, “GAUGE NO. 1”,
“ECU-IG NO. 1”, “FR WIP”, “RR
WIP”, “WASHER”, “HEATER”,
“SEAT HTR”, “ECU-IG NO. 2”,
“P/SEAT”, “PWR”, “TI&TE”, “RR
DOOR LH”, “RR DOOR RH”,
“MPX-B”, “AM1”, “DOOR NO.
2”, “STOP”, “OBD”, “FUEL
OPN”, “AIRSUS” (7.5 A),
“S/ROOF”, “FR DEF” and “RR
FOG” fuses
668
No. FUSE AMPERE CIRCUIT
Anti-lock brake system, vehicle
7 ABS NO. 1 30
8 RR DEF 40 Rear window defogger
9 HEATER 50
10 DRL 7.5 Daytime running light system
H-LP L
11
12
13
14
15 TOWING 30 Trailer lights
16 ABS NO. 2 50
LWR
H-LP L
UPR
H-LP R
UPR
PWR
OUTLET
NO. 2
15 Left-hand headlight (low beam)
15 Left-hand headlight (high beam)
15
20 Power outlet
stability control system, traction
control system, brake assist
system
Air conditioning system, rear
window defogger
Right-hand headlight (high
beam)
Anti-lock brake system, vehicle
stability control system, traction
control system, brake assist
system
ELECTRICAL COMPONENTS
No. FUSE AMPERE CIRCUIT
17 RDI FAN 50 Electric cooling fan
18 HAZ 15 Turn signal lights
19 CRT 7.5 Audio system
669
ELECTRICAL COMPONENTS
20 ALT-S 7.5 Charging system
21 ETCS 10
22 HORN 10 Horns
23 MAIN 40
24 AM2 30
RADIO
25
No. FUSE AMPERE CIRCUIT
26 ECU-B 7.5
NO. 1
15 Audio system, navigation system
Multiport fuel injection
system/sequential multiport fuel
injection system
Daytime running light system,
left-hand headlight, right-hand
headlight, all components in
“H-LP R LWR”, “H-LP R UPR”,
“H-LP L UPR”, “H-LP L LWR”
and “DRL” fuses
Starting system, all components
in “GAUGE NO. 2”, “IGN” and
“INJ” fuses
Power window, multiplex
communication system, gauge
and meters, instrument cluster
lights, instrument panel lights, air
conditioning system, garage
door opener, illuminated entry
system, wireless remote control
system, power back door, driving
position memory system,
navigation system display, moon
roof, tilt and telescopic steering,
power seats, outside rear view
mirror, windshield wipers
670
Gauge and meters, personal
lights, vanity lights, door
courtesy lights, inside door
27 DOME 7.5
28 TEL 7.5 No circuit
29 AMP 30 Audio system
DOOR
30
No. FUSE AMPERE CIRCUIT
31 A/F 25
32 EFI NO. 1 25
33
34 EFI NO. 2 10
35
36
37
NO. 1
H-LP R
LWR
RR DOOR
RH
RR DOOR
LH
FUEL
OPN
25 Multiplex communication system
15
20
20
7.5
handle lights, ignition switch
light, foot lights, scuff plate lights,
luggage compartment light,
interior light
Multiport fuel injection
system/sequential multiport fuel
injection system
Multiport fuel injection
system/sequential multiport fuel
injection system and all
components in “EFI NO. 2” fuse
Right-hand headlight (low beam)
Multiport fuel injection
system/sequential multiport fuel
injection system
Rear right side power window
Rear left side power window
Fuel filler door opener
ELECTRICAL COMPONENTS
671
ELECTRICAL COMPONENTS
38 FR FOG 15 Front fog lights
39 OBD 7.5 On-board diagnosis system
40 FR DEF 25
No. FUSE AMPERE CIRCUIT
41 STOP 10
42 TI&TE 30 Tilt and telescopic steering
43 MPX-B 7.5 No circuit
44 AM1 7.5 Starter system
45 RR FOG 7.5 No circuit
46 AIR SUS 7.5
DOOR
47
48 S/ROOF 30 Moon roof
No. FUSE AMPERE CIRCUIT
NO. 2
25
Windshield wiper de-icer and all
components in “MIR HTR” fuse
Tail lights, high mounted
stoplight, rear light failure
warning light, anti-lock brake
system, vehicle stability control
system, traction control system,
brake assist system,
electronically modulated air
suspension, shift lock control
system, multiport fuel injection
system/sequential multiport fuel
injection system
Electronically modulated air
suspension
Multiplex communication system
672
Front fog lights, instrument
49 TAIL 10
50 PANEL 7.5
No. FUSE AMPERE CIRCUIT
ECU-IG
51
NO. 1
7.5
cluster lights, instrument panel
lights, front side marker lights,
tail lights, license plate lights,
towing converter
Glove box light, instrument
cluster lights, instrument panel
lights, console box light, audio
system, power outlet, garage
door opener switch,
electronically controlled
automatic transmission system,
headlight cleaner, electronically
modulated air suspension, seat
heaters, steering switches,
power back door
Power rear view mirror control,
moon roof, multiplex
communication system,
navigation system display, shift
lock control system, multiplex
communication system (power
door lock system, wireless
remote control system), driving
position memory system, vehicle
stability control system, traction
control system, windshield
wipers, electronically controlled
automatic transmission, seat
heaters, power seats, tilt and
telescopic steering, power back
door, electronically modulated air
suspension
ELECTRICAL COMPONENTS
673
ELECTRICAL COMPONENTS
Automatic headlight leveling
ECU-IG
52
53 HEATER 7.5
No. FUSE AMPERE CIRCUIT
54 WASHER 20 Windshield washer
55 SEAT HTR 20 Seat heaters
56
57 FR WIP 30 Windshield wipers
58 RR WIP 15 Rear window wiper
59 INJ 20
60 IGN 10
61
NO. 2
GAUGE
NO. 1
GAUGE
NO. 2
10
7.5
7.5
system, vehicle stability control
system, dynamic laser cruise
control, headlight cleaner,
adaptive front-lighting system
Electric cooling fan, air
conditioning system, rear
window defogger, ignition switch,
windshield wiper de-icer
Instrument cluster lights,
instrument panel lights,
emergency flashers, seat belt,
power outlet, rear light failure
warning light, multiport fuel
injection system/sequential
multiport fuel injection system,
back-up lights
Multiport fuel injection
system/sequential multiport fuel
injection system
SRS airbag system, multiport
fuel injection system/sequential
multiport fuel injection system,
front passenger occupant
classification system, stop lights
Gauge and meters
674
No. FUSE AMPERE CIRCUIT
Navigation system display,
62 ECU-ACC 7.5
63 CIG 15 Cigarette lighter, power outlet
64
65
66 MIR HTR 10
67 P/SEAT 30 Power seats
68 PWR 30
PWR
OUTLET
NO. 1
RADIO
NO. 2
15
7.5
power rear view mirror control,
shift lock control system,
multiplex communication system
Power outlet
Instrument cluster lights,
instrument panel lights,
navigation system, audio system
Outside rear view mirror
defogger
Power window, multiplex
communication system (power
door lock system, wireless
remote control system), outside
rear view mirror
ELECTRICAL COMPONENTS
675
ELECTRICAL COMPONENTS
CHECKING BATTERY CONDITION
Precautions
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and explosive
hydrogen gas.
Do not cause a spark by contacting the battery
terminals with tools.
Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive
sulfuric acid.
Avoid contact with eyes, skin or clothes.
Never inhale or swallow electrolyte.
Wear protective safety glasses when working near
the battery.
Keep children away from the battery.
EMERGENCY MEASURES
If electrolyte gets in your eyes, flush your eyes with
clean water immediately and get immediate medical
attention. If possible, continue to apply water with a
sponge or cloth while traveling to the medical office.
676
If electrolyte gets on your skin, thoroughly wash the
contacted area. If you feel a pain or burn, get medical
attention immediately.
If electrolyte gets on your clothes, there is a
possibility of its soaking through to your skin, so
immediately take off the exposed clothing and follow
the procedure above, if necessary.
If you accidentally swallow electrolyte, drink a large
quantity of water or milk. Follow with milk of
magnesia, beaten raw egg or vegetable oil. Then go
immediately for emergency help.
ELECTRICAL COMPONENTS
677
ELECTRICAL COMPONENTS
Checking battery exterior
1
Terminals
2
Hold-down clamp
Check the battery for corroded or loose connections,
cracks, or loose hold-down clamps.
1. If the battery is corroded, wash it off with a solution of warm
water and baking soda. Coat the terminals with grease to
prevent further corrosion.
2. If the connections are loose, tighten the clamp bolts — but
do not overtighten.
3. Tighten the hold-down clamp only enough to keep the
battery firml y i n p l ace. Overtightening may damage the battery
case.
678
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.
ELECTRICAL COMPONENTS
If the battery is disconnected or run down
The following functions may not operate correctly and the jam
protection function will not function correctly when you
reconnect or replace the battery. In these cases, you should
do the each instructions referring on the following pages.
Power back door (See page 46.)
Power windows (See page 74.)
Moon roof (See page 147 or 151.)
Checking battery condition
679
ELECTRICAL COMPONENTS
Checking by indicator
Type A
Type B
Check the battery condition by the indicator color.
Type A —
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.
Type B —
1
GREEN — Good condition
2
DARK — Charging necessary . Have the battery checked
by your Lexus dealer.
3
CLEAR or LIGHT YELLOW — Have the battery checked
by your Lexus dealer.
680
NOTICE
Do not refill the battery with water.
ELECTRICAL COMPONENTS
681
ELECTRICAL COMPONENTS
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen
gas.
Therefore, before recharging:
1. If recharging with the battery installed on the vehicle, be
sure to disconnect the ground cable.
2. Make sure the power switch on the recharger is off when
connecting the charger cables to the battery and when
disconnecting them.
NOTICE
Never recharge the battery while the engine is running.
Also, be sure all accessories are turned off.
CAUTION
Always charge the battery in an unconfined area. Do
not charge the battery in a garage or closed room
where there is not sufficient ventilation.
Only do a slow charge (5 A or less). Charging at a
quicker rate is dangerous. The battery may explode
causing personal injuries.
682
CHECKING AND REPLACING THE
BLADE TYPE FUSES
Engine compartment
1
Pull-out too l 2 Spare fuses
ELECTRICAL COMPONENTS
Driver’s side instrument panel
1. Turn the ignition switch off and remove the fuse box lid.
Determine which fuse may be causing the problem. The lid of
the fuse box shows the name of the circuit for each fuse.
683
ELECTRICAL COMPONENTS
2. Make sure the inoperative component is turned off. Pull
the suspected fuse straight out with the pull-out tool and
check it. If it has blown, push a new fuse into the clips.
684
Good
1. Look carefully at the fuse. If the thin wire is broken, the fuse
has blown. If you are not sure or if it is too dark to see, try
replacing the suspected fuse with one of the same value that
you know is good.
2. Only install a fuse with the amperage rating designated on
the fuse box lid.
If you do not have a spare fuse, in an emergency you can pull
out the “RADIO NO.1”, “RADIO NO.2” or “PWR OUTLET
NO.1” fuse, which may be dispensable for normal driving, and
use it if its amperage rating is the same.
If you cannot use one of the same amperage, use one lower
than, but as close to the amperage as possible. If the
amperage is lower than that specified, the fuse might blow out
again but this does not indicate anything wrong. Be sure to get
the correct fuse as soon as possible and return the substitute
to its original clips.
Blown
ELECTRICAL COMPONENTS
It is a good idea to purchase a set of spare fuses and keep them
in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with
the electrical system. Have your Lexus dealer correct it as
soon as possible.
You should normalize the power back door, power windows
and moon roof if they do not work or the jam protection function
does not operate correctly after replacing blown fuses. In
these cases, you should do the each instructions referring on
the following pages.
Power back door (See page 46.)
Power windows (See page 74.)
Moon roof (See page 147 or 151.)
CAUTION
Never use a fuse with a higher amperage rating, or any
other object, in place of a fuse. This may cause
extensive damage and possibly a fire.
CHECKING THE CARTRIDGE TYPE
FUSES
Engine compartment
Driver’s side instrument panel
685
ELECTRICAL COMPONENTS
If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge type fuses. If any of the cartridge type fuses are
blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.
CAUTION
686
1
Type A
2
Type B
3
Good
4
Blown
Always use a genuine Lexus fuse or equivalent for
replacement. Never install an ordinary wire — even for
a temporary fix. This may cause extensive damage and
possibly a fire.
NOTICE
Before replacing the fuses, have the cause of electrical
overload determined and repaired by your Lexus dealer .
ELECTRICAL COMPONENTS
687
ELECTRICAL COMPONENTS
ADDING WASHER FLUID
If the washer tank becomes nearly empty, add washer
fluid.
NOTICE
Do not use engine antifreeze or any other substitute
because it may damage your vehicle’s paint.
You may use plain water as washer fluid. However, in cold
areas where temperatures range below the freezing point, use
washer fluid containing antifreeze. This product is available at
your Lexus dealer and most auto parts stores. Follow the
manufacturer’s directions for how much to mix with water.
688
ELECTRICAL COMPONENTS
CHECKING THE HEADLIGHT AIM
(vehicles with discharge headlight)
1
Vertical movement adjusting
2
Vertical movement adjusting bolt
Before checking the headlight aim:
1. Be sure that the body around the headlight is not deformed.
2. Park the vehicle on a level spot.
3. The driver gets into the driver’s seat and puts the vehicle in
a state readying for a driving (with a full tank).
4. Bounce the vehicle several times.
screw
Adjusting the vertical aiming
1. Turn the Phillips-head screwdriver to either direction in
order to turn the vertical movement adjusting screw (
Remember the number of times you turn the screwdriver and
the turning direction.
1
).
689
ELECTRICAL COMPONENTS
2. When turning the vertical movement adjusting bolt (
turn the Phillips-head screwdriver to the same direction as
step 1. To calculate the correct number of turns, multiply the
number of times you turned the screwdriver in step 1 by 1.25.
Turn the screwdriver by this amount.
2
REPLACING LIGHT BULBS
The illustration on the following pages show the locations of
light bulbs. If it is necessary to replace a bulb, take your vehicle
to your Lexus dealer as soon as possible. Use bulbs with the
bulb numbers and wattage ratings given in the table.
The stop lights consist of a number of LEDs. If two or more
LEDs burn out, your vehicle may not conform to local laws
(SAE). If this occurs, take your vehicle to your Lexus dealer to
have the light replaced.
),
To prevent burning yourself, do not replace the light
bulbs while they are hot.
Halogen bulbs have pressurized gas inside and
require special handling. They can burst or shatter if
scratched or dropped. Hold a bulb only by its plastic
or metal case. Do not touch the glass part of a bulb
with bare hands.
Vehicles with power back door system —
When replacing the rear light bulbs, turn off the
power back door system.
CAUTION
690
Vehicles with discharge headlights —
Do not touch the high voltage socket when the low
beam headlight turns on. 20000 V is momentarily
generated and may cause severe injury by electric
shock.
Do not disassemble, repair or take apart the low beam
headlight bulbs, connector, power supply circuits
and rotated components. Or you may be injured by
electric shocks. Call your dealer when the headlights
fail to work or have to be replaced or disposed of.
NOTICE
Only use a bulb of the listed type.
ELECTRICAL COMPONENTS
The inside of the lens of exterior lights such as headlights may
temporarily fog up when the lens becomes wet in the rain or in
a car wash. This is not a problem because the fogging is
caused by the temperature difference between the outside and
inside of the lens, just like the windshield fogs up in the rain.
However, if there is a large drop of water on the inside of the
lens, or if there is water pooled inside the light, contact your
Lexus dealer.
Light Bulbs Bulb No. W Type
1
Parking lights 168 5 F
2
Front turn signal lights --- 21 H
3
Front side marker lights 168 5 F
4
Headlights (low beam)
Discharge bulb
Halogen bulb
---
---
35
55
B
C
LIGHT LOCATION
691
ELECTRICAL COMPONENTS
5
Headlights (high beam) 9005 60 A
6
Fog lights 9006 51 D
692
Light Bulbs Bulb No. W Type
7
Rear turn signal lights --- 21 H
8
Tail lights 168 5 F
9
License plate lights 168 5 F
10
Back-up lights 921 18 F
11
Rear side marker lights 194 3.8 F
ELECTRICAL COMPONENTS
693
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