2008 LEXUS RX400H low beam

6
Pictorial indexExterior
Headlights (high beam) P. 148
Headlights (low beam) P. 148
Fog lights P. 151
Turn signal lights P. 136
Side marker lights P. 148
Hood P. 313
Windshield wipers P. 152
Moon roof ∗ P. 75
Outside rear view mirrors P. 68
Parking lights P. 148

151
2-3. Operating the lights and windshield wipers
2
When driving
RX400h_U
Fog light switch
The fog lights improve visibility in difficult driving conditions, such as in rain
or fog. They can be turned on only when the headlights are on low beam.
To turn the front fog lights off
To turn the front fog lights on

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4-3. Do-it-yourself maintenance
RX400h_U■
Engine compartment (type B)
FuseAmpereCircuit
11HEATER50Air conditioning system, “WATER
PUMP” fuse
12IG130“SEAT HTR” fuse
13H-LP CLN30Headlight cleaner
14RR DEF40Rear window defogger
15RDI FAN No.140Electric cooling fan
16DC/DC120Hybrid system
17DRL7. 5Daytime running light system
18H-LP L LWR15Left-hand headlight (low beam)
19H-LP L UPR15Left-hand headlight
20H-LP R UPR15Right-hand headlight (high beam)
21PER OUTLET
NO.220Po w e r o u t l e t ( 1 1 5 VAC )
22TOW I N G30Trailer lights
23PBD30Power back door

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4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
24RDI FAN NO.240Electric cooling fan
25HAZ15Turn signal lights, emergency flashers
26MPX-B17. 5Electric power steering system
27AM2 NO.130“GAUGE NO.2”, “IGN”, “INJ” and
“ST” fuses
28HORN10Horns
29MAIN40
“H-LP L LWR”, “H-LP L UPR”, “H-LP
R LWR”, “H-LP R UPR” and “DRL”
fuses
30IGCT NO.150
“INV W/P”, “IGCT NO.2”, “IGCT
NO.3”, “IGCT NO.4” and “IGCT
NO.5” fuses
31RADIO NO.115Audio system
32ECU-B NO.17. 5
Theft deterrent system, air condition-
ing system, gauges and meters, moon
roof, multiplex communication system
33DOME7. 5
Personal lights, interior lights, vanity
lights, engine switch light, gauges and
meters, navigation system
34ECU-B NO.27. 5Wireless remote control
35AMP30Audio system
36DOOR NO.1 25Power door lock system
37A/F25Air/fuel control system
38CRT7. 5Navigation system screen, rear seat
entertainment system
39H-LP R LWR15Right-hand headlight (low beam)
40INV W/P15Hybrid system
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
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Maintenance and care
RX400h_U
Light bulbs
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
■Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( →P. 441)
■ Remove the engine compartment cover.
→ P. 317
■ Turn the power back door main switch OFF.
→ P. 4 5
■ Front bulb locations
Parking light Front turn
signal light
Front side
marker light
Headlight
low beam
(halogen bulb)
Headlight
high beam
(halogen bulb)

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4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U■
Headlight low beam (halogen bulb)
Turn the cover counterclockwise.
Turn the bulb base counterclock-
wise.
Unplug the connector while
depressing the lock release.
■ Front turn si gnal lights
Turn the bulb base counterclock-
wise.
STEP1
STEP2
STEP3
STEP1

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4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_URemove the upper trim board.
Turn the bulb base counterclock-
wise.
Remove the light bulb.
■ Bulbs other than the above
If any of the bulbs listed below has burnt out, have your Lexus dealer
replace it.
●Headlight low beams (discharge bulbs)
● Fog lights
● Stop lights
● Tail lights
● High mounted stoplight
STEP3
STEP4
STEP5

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4-3. Do-it-yourself maintenance
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Maintenance and care
RX400h_U
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately after turn-
ing off the headlights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. Hold the bulb by
the plastic or metal portion.
If the bulb is scratched or dropped it may blow out or crack.
●Fully install light bulbs and any parts used to secure them.
Failing to do so may result in heat damage, fire, or water entering the headlight
unit. This may damage the headlights or cause condensation to build up on the
lens.
●Do not attempt to take apart or repair the low beam discharge headlight bulbs,
connectors, power supply circuits, or related components.
Doing so could result in electric shock and serious injury or death.
■Discharge headlights
●Contact your Lexus dealer before replacing discharge headlights (including light
bulbs).
●Do not touch the high-intensity discharge headlight’s high voltage socket when
the headlights are turned on.
An extremely high voltage of 20000 V will be discharged and could result in
serious injury or death by electric shock.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.