warning light Lexus IS250 2009 Owner's Manual

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08_IS350/250_U_(L/O_0808)
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Manual transmission .................... 137
Turn signal lever ............................ 139
Parking brake ................................. 140
Horn...................................................... 141
2-2. Instrument cluster Gauges and meters ..................... 142
Indicators and warning lights................................................. 148
Multi-information display ............. 151
2-3. Operating the lights and windshield wipers
Headlight switch ............................ 156
Fog light switch .............................. 159
Windshield wipers and washer............................................. 160
Headlight cleaner switch ........... 165
2-4. Using other driving systems Cruise control ................................ 166
Dynamic radar cruise control............................................. 170
Intuitive parking assist ................. 180
Driving assist systems.................. 186
PCS (Pre-Collision System) ............ 192 2-5. Driving information
Cargo and luggage ...................... 196
Vehicle load limits......................... 199
Winter driving tips ...................... 200
Trailer towing ................................. 204
Dinghy towing (vehicles with an automatic
transmission) .............................. 205
Dinghy towing (vehicles with a manual transmission) ........... 206
3-1. Using the air conditioning system and defogger
Automatic air conditioning system ............................................. 210
Rear window and outside rear view mirror defoggers ............. 218
3-2. Using the audio system Audio system type ........................ 219
Using the radio.............................. 222
Using the CD player................... 229
Playing back MP3 and WMA discs.................................. 235
Optimal use of the audio system ............................................. 241
Using the AUX adapter............ 244
Using the steering wheel audio switches ............................ 245
3Interior features

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08_IS350/250_U_(L/O_0808)
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5-1. Essential informationEmergency flashers..................... 372
If your vehicle needs to be towed ....................................... 373
If you think something is wrong ......................................... 379
Fuel pump shut off system ....... 380
Event data recorder ..................... 381
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ....................................... 383
If a warning message is displayed....................................... 392
If you have a flat tire..................... 404
If the engine will not start ........... 413
If the shift lever cannot be shifted from P ............................... 415
If you lose your keys ..................... 416
If the electronic key does not operate properly ........................ 417
If the vehicle battery is discharged .................................... 421
If your vehicle overheats ........... 424
If the vehicle becomes stuck................................................ 427 6-1. Specifications
Maintenance data (fuel, oil level, etc.).................... 430
Fuel information............................ 446
Tire information ............................ 449
6-2. Customization Customizable features ............... 461
6-3. Initialization Items to initialize ........................... 467
Reporting safety defects for U.S. owners........................... 470
Seat belt instructions for Canadian owners
(in French) ...................................... 471
Abbreviation list ................................... 474
Alphabetical index............................... 476
What to do if... ....................................... 486
5When trouble arises6Vehicle specifications
7For owners
Index

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1-3. Adjustable components (seats, mirrors, steering wheel)
08_IS350/250_U_(L/O_0808)
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking or an accident.
Failing to do so may cause death or severe injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
●Always wear a seat belt properly.
●Each seat belt should be used by one person only. Do not use a seat belt for more
than one person at once, including children.
●Lexus recommends that children be seated in the rear seat and always use a seat
belt and/or an appropriate child restraint system.
●Do not recline the seat any more than necessary to achieve a proper seating
position. The seat belt is most effective when the occupants are sitting up straight
and well back in the seats.
●Do not wear the shoulder belt under your arm.
●Always wear your seat belt low and snug across your hips.
■Adjustable shoulder anchor
Always make sure the shoulder belt is positioned across the center of your shoul-
der. The belt should be kept away from your neck, but not falling off your shoulder.
Failure to do so could reduce the amount of protection in an accident and cause
death or serious injuries in a collision. ( →P. 5 7 )
■Child restraint lock function belt precaution
Do not allow children to play with the child restraint lock function belt. If the belt
becomes twisted around a child’s neck, it will not be possible to pull the belt out
leading to choking or other serious injuries that could result in death. If this occurs
and the buckle cannot be unfastened, scissors should be used to cut the belt.
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, which prevents the sensor from detecting
the passenger’s weight properly. As a result, the seat belt pretensioner for the
front passenger’s seat may not activate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.

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1-4. Opening and closing the windows and moon roof
08_IS350/250_U_(L/O_0808)
■The moon roof can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■Moon roof open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the
instrument panel when the “ENGINE START STOP” switch is turned OFF and the
driver's door is opened with the moon roof open.
■Linked door lock moon roof operation
●The moon roof can be opened and closed using the mechanical key. (
P. 4 1 7 )
●The moon roof can be opened using the wireless remote control. (
P. 3 6 )
●The moon roof can be closed using the entry function. (
P. 2 5 )
■Operating the moon roof after turning the “ENGINE START STOP” switch OFF
The moon roof can be operated for approximately 45 seconds even after the
“ENGINE START STOP” switch is switched to ACCESSORY mode or turned
OFF. It cannot, however, be operated once either front door is opened.
■Jam protection function
If an object is detected between the moon roof and the frame while closing or tilting
down, travel is stopped and the moon roof opens slightly.
■When the moon roof does not close normally
Pressing and holding the “CLOSE” switch will close the moon roof.
■To reduce moon roof wind noise
Drive with the moon roof opened to slightly before the fully open position as driving
with the moon roof opened fully will cause wind noise.
■Sunshade
The sunshade can be opened and closed manually. However, the sunshade will
open automatically when the moon roof is opened.
■Customization that can be configured at Lexus dealer
Settings (e.g. linked door lock operation) can be changed.
(Customizable features

P. 4 61 )

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1-7. Safety information
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Before driving
08_IS350/250_U_(L/O_0808)
Airbag system componentsYour vehicle is equipped with ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag system
controls airbag deployment power for the driver and front passenger. The
driver airbag system consists of the driver seat’s position sensor etc. The
front passenger’s airbag system consists of the front passenger occupant
classification sensor etc.
The main SRS airbag system components are shown above. The SRS air-
bag system is controlled by the airbag sensor assembly. The airbag sen-
sor assembly consists of a safing sensor and an airbag sensor. Knee airbags
Front passenger airbag
Curtain shield airbags
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Side airbags
Side and curtain shield airbag
sensors
Curtain shield airbag sensors
SRS warning light
Driver airbag
Driver's seat belt buckle switch
Driver's seat position sensor
Front passenger’s seat belt
buckle switch
Airbag sensor assembly
Occupant detection system
(ECU and sensors)
Front airbag sensors

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1-7. Safety information
08_IS350/250_U_(L/O_0808)In certain types of severe frontal or side impacts, the SRS airbag system
triggers the airbag inflators. A chem
ical reaction in the inflators quickly
fills the airbags with non-toxic gas to help restrain the motion of the occu-
pants.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors,
side and curtain shield airbag sensor assemblies, curtain shield airbag sensor
assemblies, driver's seat position sensor, driver's seat belt buckle switch, seat belt
pretensioner assemblies, inflators, interconnecting wiring and power sources.
( → P. 3 8 4 )
■If the SRS airbags deploy (inflate)
●Bruising and slight abrasions may result from contact with a deploying (inflating)
SRS airbag.
●A loud noise and white powder will be emitted.
●Parts of the airbag module (steering wheel, airbag cover and inflator) as well as
the front seats, and parts of the front pillar, rear pillar and roof side rail, may be
hot for several minutes. The airbag itself may also be hot.
●The windshield may crack.
■SRS airbag deployment conditions (front airbags)
●The front SRS airbags will deploy in the event of an impact that exceeds the
set threshold level (the level of force corresponding to a 12 - 18 mph [20 - 30
km/h] frontal collision with a fixed wall that does not move or deform).
However, this threshold velocity will be considerably higher if the vehicle strikes
an object, such as a parked vehicle or sign pole, which can move or deform on
impact, or if the vehicle is involved in an underride collision (e.g. a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a truck, etc.).
●It is possible that in some collisions where the forward deceleration of the vehi-
cle is very close to the designed threshold level, the SRS front airbags and the
seat belt pretensioners may not activate together.
●The SRS front passenger airbag will not activate if there is no passenger sitting
in the front passenger seat. However, the front passenger airbag may deploy if
luggage is put in the seat, or the seat belt is fastened, even if the seat is unoccu-
pied. ( →P. 9 5 )

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1-7. Safety information
Before driving
08_IS350/250_U_(L/O_0808)
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the conditions of the front passenger seat and
activates or deactivates the devices for front passenger.
SRS warning light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Front passenger’s seat belt reminder light

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1-7. Safety information
08_IS350/250_U_(L/O_0808)
Condition and operation in the front passenger occupant classification system
■Adult*1
■Child *3 or child restraint system*4
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” i n d i c a t o r lights“A I R B A G ON”
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag
Activated
Side airbag on the front
passenger seatCurtain shield airbag in the front passenger side
Front passenger knee airbag
Front passenger’s seat belt pretensioner
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” i n d i c a t o r
lights“A I R B A G OFF” *5
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag
Deactivated
Side airbag on the front
passenger seatCurtain shield airbag in the front passenger sideActivated
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

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1-7. Safety information
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Before driving
08_IS350/250_U_(L/O_0808)■
Unoccupied
■ There is a malfunction in the system
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1: The system judges a person of adult size as an adult. When a smaller adult sits in the front passenger seat, the system may recognize him/
her as a child depending on his/her physique and posture.
*
2: In the event the front passenger does not wear a seat belt.
*
3: When a larger child who has outgrown a child restraint system sits in the front passenger seat, the system may recognize him/her as an
adult depending on his/her physique or posture.
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” i n d i c a t o r lights Not illuminated
SRS warning light
Off
Front passenger’s seat belt reminder light
Devices Front passenger airbag
Deactivated
Side airbag on the front
passenger seat
Curtain shield airbag in the front passenger sideActivated
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner
Indicator/
warning light
“A I R B A G O N ” a n d “A I R B A G O F F ” i n d i c a t o r lights“A I R B A G OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front passenger airbag
Deactivated
Side airbag on the front
passenger seat
Curtain shield airbag in the front passenger sideActivated
Front passenger knee airbag Deactivated
Front passenger’s seat belt pretensioner Activated

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1-7. Safety information
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Before driving
08_IS350/250_U_(L/O_0808)
CAUTION
■Front passenger occupant classification system precautions
●Do not recline the front passenger seatback so far that it touches a rear seat. This
may cause the “AIR BAG OFF” indicator light to be illuminated, which indicates
that the passenger’s airbags will not deploy in the event of a severe accident. If the
seatback touches the rear seat, return the seatback to a position where it does
not touch the rear seat. Keep the front passenger seatback as upright as possible
when the vehicle is moving. Reclining the seatback excessively may lessen the
effectiveness of the seat belt system.
●If an adult sits in the front passenger seat, the “AIR BAG ON” indicator light is illu-
minated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit
up straight, well back in the seat, feet on the floor, and with the seat belt worn cor-
rectly. If the “AIR BAG OFF” indicator still remain illuminated, either ask the pas-
senger to move to the rear seat, or if that is not possible, move the front passenger
seat fully rearward.
●When it is unavoidable to install the forward-facing child restraint system on the
front passenger seat, install the child restraint system on the front passenger seat
in the proper order. (

P. 1 0 4 )
●Do not modify or remove the front seats.
●Do not kick the front passenger seat or subject it to severe impact. Otherwise,
the SRS warning light may come on to indicate a malfunction of the detection sys-
tem. In this case, contact your Lexus dealer immediately.
●Child restraint systems installed on the rear seat should not contact the front seat-
backs.
●Do not use a seat accessory, such as a cushion or seat cover, that covers the seat
cushion surface.
●Do not modify or replace the upholstery of the front seat.