2009 Lexus IS250 lights

369
4-3. Do-it-yourself maintenance
4
Maintenance and care
08_IS350/250_U_(L/O_0808)
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.

372
08_IS350/250_U_(L/O_0808)
5-1. Essential information
Emergency flashers
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the engine is
not running.
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Press the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.

5
When trouble arises
383
08_IS350/250_U_(L/O_0808)
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer:

P. 3 9 5
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer)*
• Low brake fluid
• Malfunction in the brake booster systemThis light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released the system is operating normally.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, but then turns off, this does not necessar-
ily indicate a malfunction in the system.

5
When trouble arises
413
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0808)
If the engine will not start
If the engine will not start, even though correct starting procedures are
being followed (

P. 126), consider each of the following points.
■The engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. (
P. 1 2 6 )
● There may be a malfunction in the engine immobilizer system.
(
P. 7 7 )
■ The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
● The battery may be discharged. (
P. 4 2 1 )
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. (
P. 4 2 1 )
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

422
5-2. Steps to take in an emergency
08_IS350/250_U_(L/O_0808)
■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.
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

436
6-1. Specifications
08_IS350/250_U_(L/O_0808)
Electrical system
Differential
Front
Rear
*: “Toyota Genuine Differential gear oil” is filled in your Lexus vehicle at factory fill. Use Lexus approved “Toyota Genuine Differential gear oil” or an equivalent
of matching quality to satisfy the above specification. Please contact your Lexus
dealer for further details.
Battery
Open voltage* at
68
F (20C):
12.6 
12.8 V Fully charged
12.2

12.4 V Half charged
11.8

12.0 V Discharged
(*: Voltage checked 20 minutes after
the engine and all the lights are turned
off)
Charging rates5 A max.
Oil capacity0.74 qt. (0.70 L, 0.61 lmp.qt.)
Oil typeHypoid gear oil API GL-5
Oil viscosityAbove -18C (0F): SAE90
Below -18
C (0F): SAE80W or SAE80W-90
Oil capacity
IS350: 1.42 qt. (1.35 L, 1.19 lmp.qt.)
IS250:
1.20 qt. (1.15 L, 1.01 lmp.qt.)
Oil type and viscosity*“Toyota Genuine Differential Gear Oil LT 75W-85
GL-5” or equivalent

445
6-1. Specifications
6
Vehicle specifications
08_IS350/250_U_(L/O_0808)
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: HB4 halogen bulbs
G: 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 lights21C
Parking lights1685E
Front fog lights900651F
Tr u n k l i g h t5G
Rear turn signal lights74 4 021E
Back-up lights92116E
Outer foot lights5E
Interior
Vanity lights8E
Interior lights Front
Rear
103E
G
Overhead courtesy lights Front
Rear
3.8
3E
G
Front door courtesy light3.8E

464
6-2. Customization
08_IS350/250_U_(L/O_0808)
ItemFunctionDefault settingCustomizedsetting
Power win-
dows
(

P. 6 9 )
Linked door lock opera-
tionOnOff
Linked door key opera-
tionOpen and closeOpen only
Close only
Wireless remote control
linked operationOnOff
Moon roof
(

P. 7 1 )
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 is used
Slide onlyTilt only
Automatic
light control
system
(

P. 1 5 6 )
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 5 7 )
Daytime running light sys-
tem (U.S.A. only)OnOff