2012 Lexus IS250 headlights

459
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS350/250_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.
■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.
●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.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.

5
When trouble arises
511
5-2. Steps to take in an emergency
IS350/250_U
■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.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical
appliances. If the vehicle is left for a long time, the battery may discharge, and the
engine may be unable to start. (The battery recharges automatically during driving.)
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 of 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

536
6-1. Specifications
IS350/250_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
Headlights
High beam
Low/high beam (discharge bulbs)
Low beam (halogen bulbs)
9005D4S
H116035
55D
A B
Front turn signal lights21C
Parking lights (vehicles with
halogen headlights)1685E
Front fog lightsH1155B
Rear turn signal lights744021E
Back-up lights92116E
Outer foot lights5E
Interior
Vanity lights8E
Tr u n k l i g h t5F
Interior lights Front
Rear
5
3E
F
Overhead courtesy lights3F
Front door courtesy lights5E

556
6-2. Customization
IS350/250_U
Power win-
dows
(
→P. 8 0 )
Linked door key opera-
tionOpen and close
Off
Open only
Close only
Wireless remote control
linked operationOffOpen only
Moon roof
(
→P. 8 3 )
Linked door key opera-
tionOpen and close
Off
Open only
Close only
Linked operation of com-
ponents when door key is
used
Slide onlyTilt only
Wireless remote control
linked operationOffOpen only
Linked operation of com-
ponents when wireless
remote control is used
Slide onlyTilt only
Automatic
light control
system
(
→P. 1 7 2 )
Light sensor sensitivityLevel 3Level 1 to 5
Ti m e e l a p s e d b e f o r e
headlights automatically
turn off after doors are
closed
30 seconds
0 seconds
60 seconds
90 seconds
Lights
(
→P. 1 74 )
Daytime running light sys-
tem (U.S.A. only)OnOff
ItemFunctionDefault settingCustomizedsetting

582
Alphabetical index
IS350/250_U
Front seatsAdjustment............................................... 56
Driving position memory.................. 58
Front turn signal lights
Switch ........................................................154
Wattage..................................................536
Fuel Capacity................................................. 523
Fuel gauge ............................................. 158
Fuel pump shut off system ............ 470
Gas station information.................. 592
Information............................................ 537
Refueling ................................................... 87
Fuel door ..................................................... 87
Fuel filler door ........................................... 87
Fuel pump shut off system .................470
Fuses ..........................................................435
Garage door opener ..........................360
Gas station information......................592
Gauges ...................................................... 158
Glove box ............................................... 330
Glove box light ..................................... 330 Hands-free system
for mobile phone* ............................. 294
Hazard lights Switch.......................................................462
Head restraints Adjusting .................................................. 62
Headlight aim .........................................450
Headlight cleaner.................................. 185
Headlights Discharge headlight
precautions ....................................... 459
Replacing light bulbs ......................... 451
Switch.........................................................172
Wattage ................................................. 536
Heaters Seat heaters ............................. 345, 348
Side mirror............................................. 224
Hill-start assist control ..........................196
Hood .......................................................... 394
Hooks
Cargo.......................................................357
Coat ......................................................... 355
Shopping bag ......................................357
Horn .............................................................157
G
H

583
Alphabetical index
IS350/250_U
I/M test ..................................................... 390
IdentificationEngine ....................................................... 521
Vehicle...................................................... 521
Ignition switch ............................................141
Illuminated entry system ................... 325
Indicator lights ......................................... 164
Initialization Items to initialize .................................559
Inside rear view mirror...........................75
Interior lights Interior lights ........................................ 325
Switch .......................................................327
Wattage ................................................. 536
Jack Positioning a floor jack ................... 395
Vehicle-equipped jack ................... 492
Jack handle ..............................................492
Keyless entry..............................................45
Keys Electronic key......................................... 28
Engine switch .......................................... 141
If the electronic key does not operate properly ............................505
If you lose your keys ........................504 Key number ............................................. 28
Keyless entry ........................................... 45
Keys ............................................................. 28
Mechanical key ...................................... 29
Wireless remote control key .......... 45
Light bulbs Replacing ................................................ 451
Wattage ................................................. 536
Lights
Door courtesy lights .........................325
Emergency flasher switch ............. 462
Fog light switch .....................................176
Hazard light switch ...........................462
Headlights switch................................. 172
Interior light switch ............................ 327
Outer foot lights .................................325
Overhead courtesy light ................325
Personal light switch......................... 327
Replacing light bulbs ......................... 451
Scuff lights ..............................................325
Shift lever light......................................325
Turn signal lever .................................. 154
Vanity lights .......................................... 337
Wattage ................................................. 536
Load capacity .........................................205I
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K
L
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.