2008 Lexus IS250 headlights

331
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
Fuse layout and amperage ratings■ Engine compartment (type A)
FuseAmpereCircuit
1ABS NO.325 AVDIM
2PWR HTR25 A
3TURN-HAZ15 AEmergency flashers, turn signals
4IG2 MAIN20 AIG2, IGN, GAUGE
5RAD NO.230 AAudio
6D/C CUT20 ADOME, MPX-B
7RAD NO.130 AAudio
8MPX-B10 A
Headlights, front fog lights, parking
lights, license plate lights, windshield
washer, horn, power door lock system,
power windows, power seats, electric
tilt and telescopic steering column,
meter, smart access system with push-
button start, outside rear view mirrors,
air conditioning system, security sys-
tem
9DOME10 AInterior lights, meter

347
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0708)
■When replacing the front left headlight and parking light bulbs
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more information in the following situations. Tempo-
rary condensation build-up on the inside of the headlight lens does not indicate a
malfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up inside the headlight.
■Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or may
go out temporarily. The discharge bulbs will come on when normal power is
restored. Remove the securing bolt and move the
washer fluid filler opening to allow easy
access to the light bulbs.
After replacing the bulbs, make sure to
secure the washer fluid filler opening with the
bolt.

348
4-3. Do-it-yourself maintenance
08_IS350/250_U_(L/O_0708)
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 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.

398
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0708)
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
■When the battery is removed or discharged
The power windows must be initialized.
(→ P. 6 4 )
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery.
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any part other than the intended terminal.
●Do not allow the jumper cables to come into contact with the “+” and “-” termi-
nals.
●Do not allow open flame or use matches, cigarette lighters or smoke near the
battery.
Maintain the engine speed on the second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.STEP5
STEP6

420
6-1. Specifications
08_IS350/250_U_(L/O_0708)
Light bulbs
*: If equipped
A: D4S discharge bulbs
B: H11 halogen bulbs
C: Wedge base bulbs (amber)
D: HB3 halogen bulbs
E: Wedge base bulbs (clear)
F: HB4 halogen bulbs
G: Double end bulbs
Light BulbsBulb No.WTy p e
Exterior
Headlights
High beam
Low/high* beam (discharge bulbs)
Low beam* (halogen bulbs)
9005D4S
H116035
55D
A
B
Front turn signal lights21C
Parking lights1685E
Front fog lights900655F
Tr u n k l i g h t5G
Rear turn signal lights744021E
Back-up lights92116E
Outer foot lights5E
Interior
Vanity lights8E
Interior lights Front
Rear
10
3.0E
G
Overhead courtesy lights Front
Rear
3.8
3.0E
G
Door courtesy lights3.8E

439
6-2. Customization
6
Vehicle specifications
08_IS350/250_U_(L/O_0708)
ItemFunctionDefault settingCustomizedsetting
Po w e r w i n -
dows
(
→P. 6 4 )
Linked door lock opera-
tionOnOff
Linked door key opera-
tionOpen and closeOpen only
Close only
Wireless remote control
linked operationOnOff
Moon roof
(
→P. 66)
Linked door lock opera-
tionOnOff
Linked door key opera-
tionOpen and closeOpen only
Close only
Linked operation of com-
ponents when door key is
used
Slide onlyTilt only
Wireless remote control
linked operationOnOff
Linked operation of com-
ponents when wireless
remote control used
Slide onlyTilt only
Automatic
light control
system
(
→P. 1 4 3 )
Light sensor sensitivityLevel 3Level 1 to 5
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
0 seconds
60 seconds
90 seconds

452
Alphabetical index
08_IS350/250_U_(L/O_0708)
HeadlightsDischarge headlights
precautions .......................................348
Replacing light bulbs........................ 342
Switch ........................................................ 143
Wattage.................................................. 420
Heaters Seat heaters................................251, 253
Side mirror ............................................200
Hill-start assist control ......................... 170
Hood ..........................................................289
Hooks
Cargo ........................................................ 261
Coat ......................................................... 259
Shopping bag........................................ 261
I/M test ......................................................285
Identification Engine ..................................................... 407
Vehicle .................................................... 407
Ignition switch............................................ 117
Illuminated entry system ....................233
Indicator lights......................................... 136
Initialization Items to initialize ................................... 441
Inside rear view mirror ..........................60
Interior lights Interior lights........................................... 231
Switch ...................................................... 234
Wattage.................................................. 420
Jack Positioning a floor jack....................290
Replacing the wheel......................... 382
Jack handle ..............................................382 Keyless entry ............................................. 34
Keys
Electronic key .........................................20
Engine switch .......................................... 117
If you lose your keys ........................ 393
If the electronic key does not operate properly............................ 394
Key number..............................................20
Keyless entry............................................ 34
Keys..............................................................20
Mechanical key ......................................20
Wireless remote control key...........34
Light bulbs Replacing ...............................................342
Wattage ................................................. 420
Lights Door courtesy lights .......................... 231
Fog light switch .................................... 146
Headlights switch................................ 143
Interior light switch ............................234
Outer foot lights................................... 231
Overhead courtesy light ................. 231
Personal light switch .........................234
Replacing light bulbs ........................342
Scuff lighting........................................... 231
Shift lever lighting ................................ 231
Turn signal lever................................... 128
Vanity lights...........................................243
Wattage ................................................. 420
Load capacity.......................................... 182
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