warning Lexus IS250 2008 Using the air conditioning system and defogger / LEXUS 2008 IS250 OWNER'S MANUAL (OM53699U)

1
2
3
4
5
6
7
3
2-2. Instrument cluster..................... 130Gauges and meters ..................... 130
Indicators and warning lights ... 136
Multi-information display........... 139
2-3. Operating the lights and windshield wipers .................... 143
Headlight switch ............................ 143
Fog light switch .............................. 146
Windshield wipers and washer............................................. 147
Headlight cleaner switch ............. 151
2-4. Using other driving systems.... 152 Cruise control ................................ 152
Dynamic radar cruise control............................................. 155
Intuitive parking assist ................. 164
Driving assist systems.................. 170
PCS (Pre-Collision System)..... 176
2-5. Driving information ................... 179 Cargo and luggage ...................... 179
Vehicle load limits ......................... 182
Winter driving tips ........................ 183
Trailer towing .................................. 187
Dinghy towing (vehicles with an
automatic transmission) .......... 188
Dinghy towing (vehicles with a
manual transmission) ................ 189 3-1. Using the air conditioning
system and defogger ............. 192
Automatic air conditioning system .................. 192
Rear window and outside rear view mirror defoggers ........... 200
3-2. Using the audio system............ 201 Audio system type ........................ 201
Using the radio.............................. 204
Using the CD player...................... 211
Playing back MP3 and WMA discs.................................... 217
Optimal use of the audio system ............................................ 225
Using the AUX adapter ............ 228
Using the steering wheel audio switches ............................ 229
3-3. Using the interi or lights ........... 231
Interior lights list............................. 231
• Interior lights ............................... 234
• Personal lights ............................ 234
3Interior features

1
2
3
4
5
6
7
5
5-1. Essential information .............. 350If your vehicle needs to be towed ...................................... 350
If you think something is wrong ......................................... 356
Fuel pump shut off system ........ 357
Event data recorder ................... 358
5-2. Steps to take in an emergency .............................. 360
If a warning light turns on or a warning buzzer
sounds... ....................................... 360
If a warning message is displayed ....................................... 369
If you have a flat tire.................... 382
If the engine will not start ........... 391
If the shift lever cannot be shifted from P .............................. 392
If you lose your keys .................... 393
If the electronic key does not operate properly ....................... 394
If the vehicle battery is discharged ................................... 397
If your vehicle overheats .......... 400
If the vehicle becomes stuck ... 402 6-1. Specifications ............................ 406
Maintenance data (fuel, oil level, etc.)..................... 406
Fuel information ............................. 421
Tire information ............................ 424
6-2. Customization .......................... 436 Customizable features .............. 436
6-3. Initialization ................................ 441 Items to initialize ............................ 441
Reporting safety defects for U.S. owners........................... 444
Seat belt instructions for Canadian owners
(in French) .................................... 445
Abbreviation list .................................. 448
Alphabetical index.............................. 450
What to do if... ...................................... 462
5When trouble arises6Vehicle specifications
7For owners
Index

18
Symbols used throughout this manual
Cautions & Notices
Symbols used in illustrations
CAUTION
This is a warning against anything which may cause injury to people if the warning is
ignored. You are informed about what you must or must not do in order to reduce the
risk of injury to yourself and others.
NOTICE
This is a warning against anything which may cause damage to the vehicle or its
equipment if the warning is ignored. You are informed about what you must or must
not do in order to avoid or reduce the risk of damage to your Lexus and its equipment.
Safety symbol
The symbol of a circle with a slash through it means “Do not”,
“Do not do this”, or “Do not let this happen.”
Arrows indicating operationsIndicates the action (pushing, turning, etc.)
used to operate switches and other
devices.
Indicates the outcome of an operation (e.g.
a lid opens).

30
1-2. Opening, closing and locking the doors and trunk
■Alarms and warning indicators
A combination of exterior and interior alarms as well as warnings displayed on the
multi-information display are used to prevent theft of the vehicle and unforeseeable
accidents resulting from erroneous operation. Take appropriate measures in
response to any warning indications on the multi-information display. (P. 3 6 9 )
The following table describes circumstances and correction procedures when only
alarms are sounded.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 2
seconds
Tried to lock the doors using
the entry function while the
electronic key is still inside
the passenger compartmentRetrieve the electronic
key from the passenger
compartment and lock
the doors again.
Closed the trunk while the
electronic key is still inside
and all doors are lockedRetrieve the electronic
key from the trunk and
close the trunk lid.
Exterior alarm
sounds once for 60
seconds
Tried to exit the vehicle with
the electronic key and lock
the doors without first turning
the “ENGINE START STOP”
switch OFFTu r n t h e “ E N G I N E
START STOP” switch
OFF and lock the doors
again.
Exterior alarm
sounds once for 10
secondsTried to lock the vehicle using
the entry function while a
door is openClose all of the doors
and lock the doors
again.
Interior alarm
sounds continu-
ously
*
Tried to open the door and
exit the vehicle without shift-
ing the shift lever to P
Shift the shift lever to P.

32
1-2. Opening, closing and locking the doors and trunk
NOTICE:
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa-
tion. This equipment generate s, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause harmful inter-
ference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful inter-
ference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
●Reorient or relocate the receiving antenna.
●Increase the separation between the equipment and receiver.
●Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
●Consult the dealer or an experienced radio/TV technician for help.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

35
1-2. Opening, closing and locking the doors and trunk
1
Before driving
■When the electronic key battery is fully depleted
P. 3 2 5
■Conditions affecting operation
P. 2 6
■Customization that can be configured at Lexus dealer
Settings (e.g. trunk unlocking function) can be changed. (Customizable features
 P. 4 3 6 )
■Certification for wireless remote control
For vehicles sold in the U.S.A.
NOTE:
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
NOTICE:
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa-
tion. This equipment generate s, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instructions, may cause harmful inter-
ference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful inter-
ference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
●Reorient or relocate the receiving antenna.
●Increase the separation between the equipment and receiver.
●Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
●Consult the dealer or an experienced radio/TV technician for help.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
FCC ID: NI4TMLF-1

80
1-7. Safety information
Airbag system componentsYour vehicle is equipped with AD VANCED AIRBAGS designed based
on US motor vehicle safety standa rds (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 con sists of the front passenger occupant
classification sensor etc.
The main SRS airbag system componen ts are shown above. The SRS air-
bag system is controlled by the airb ag 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

81
1-7. Safety information
1
Before driving
In certain types of severe frontal or side impacts, the SRS airbag system
triggers the airbag inflators. A chemica l reaction in the inflators quickly
fills the airbags with non-toxic gas to he lp restrain the motion of the occu-
pants.
■SRS warning light
This warning light system monitors the airb ag 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, inte rconnecting wiring and power sources.
(  P. 3 6 1 )
■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 hub, 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 front windshield may crack.
■Operating conditions (front airbags)
●The SRS front airbags will deploy if the severity of the frontal impact is above the
designed threshold level, comparable to an approximate 15 mph (25 km/h) col-
lision when the vehicle impacts straight into a fixed barrier 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 thresh old level, the SRS front airbags and the
seat belt pretensioners ma y 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 0 )

90
1-7. Safety information
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

91
1-7. Safety information
1
Before driving
Condition and operation in the front passenger occupant classification system
■Adult*1
■Child *3 or child restraint system*4
Indicator/
warning light
“AIR BAG ON” and “AIR BAG OFF” indicator 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
“AIR BAG ON” and “AIR BAG OFF” indicator 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