2010 Lexus IS250C low beam

10_IS250C/350C_U
8
Headlights (high beam) P. 173
Pictorial indexExterior
Turn signal lights P. 156
Fog lights P. 176
Side marker lights P. 173
Headlights
Low/high beam (discharge bulbs)
Low beam (halogen bulbs)P. 173
Windshield wipers P. 177
Retractable hardtop P. 81
Outside rear view mirrors P. 75
Turn signal lights
P. 156
Parking lights P. 173
Hood P. 389

176
2-3. Operating the lights and windshield wipers
10_IS250C/350C_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.
Front fog lights off
Front fog lights on

435
4-3. Do-it-yourself maintenance
4
Maintenance and care
10_IS250C/350C_U
14IG210 A
Ignition system, multiport fuel injec-
tion system/sequential multiport fuel
injection system
15EFI NO.210 AFuel system, exhaust system
16H-LP R LWR15 AHeadlight low beam (right)
17H-LP L LWR15 AHeadlight low beam (left)
18F/ P M P25 AFuel system
19EFI25 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, EFI NO. 2
20INJ20 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
21H-LP UPR15 AHeadlight high beams
22HORN10 AHorns
23WA S H E R20 AWindshield washer
24FR TAIL10 AParking lights, front side marker lights
25FR FOG15 AFront fog lights
FuseAmpereCircuit

444
4-3. Do-it-yourself maintenance
10_IS250C/350C_U
Light bulbs
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
■Preparing a replacement light bulb
Check the wattage of the light bulb being replaced. ( →P. 541)
■ Removing the engine compartment cover
→ P. 394
■ Front bulb locations
■ Rear bulb locations
Parking light
Headlight high
beam
Rear turn signal light Back-up light

448
4-3. Do-it-yourself maintenance
10_IS250C/350C_UTurn 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 (halogen bulbs)
● Headlight high and low beams (discharge bulbs)
● Front fog lights
● Front turn signal lights
● Front side marker lights
● Side turn signal lights
● Stop/tail lights
● Tail lights
● Rear side marker lights
STEP3
STEP4

450
4-3. Do-it-yourself maintenance
10_IS250C/350C_U
CAUTION
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after turning
off the lights.
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 headlight bulbs, connectors,
power supply circuits, or related components.
Doing so could result in electric shock and serious injury or death.
■Discharge headlights (if equipped)
●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.

541
6-1. Specifications
6
Vehicle specifications
10_IS250C/350C_U
Light bulbs
A: D4S discharge bulbs
B: H11 halogen bulbs
C: Wedge base bulbs (amber)
D: HB3 halogen bulbs
E: Wedge base bulbs (clear)
F: Double end bulbs
Light BulbsBulb No.WTy p e
Exterior
HeadlightsHigh beam
Low/high beam (discharge bulbs)
Low beam (halogen bulbs)
9005D4S
H116035
55D
A
B
Front turn signal lightsWY21W21C
Parking lightsW5W5E
Front fog lightsH1155B
Tr u n k l i g h t5F
Rear turn signal lightsWY21W21C
Back-up lights92116E
Outer foot lights5E
Interior
Vanity lights1.5F
Interior light5E
Door courtesy lights5E