2007 Lexus IS250 tire sensor

298
4-3. Do-it-yourself maintenance
CAUTION
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire.
Doing so may result in an accident, causing serious injury or death.
NOTICE
■Replacing tire inflation pressure sensors
●Because tire repair or replacement may affect the tire pressure sensors, make
sure to have tires serviced by your Lexus dealer or other qualified service shop. In
addition, make sure to purchase your tire pressure sensors at your Lexus dealer.
●Ensure that only Genuine Lexus wheels are used on your vehicle.
Tire pressure sensors may not work properly with non-genuine wheels.

313
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15AOutside rear view mirror defoggers
4TV NO.110ADisplay
5FUEL OPEN10AFuel filler door opener
6TV NO.27. 5 A
7PSB30APre-collision seat belt
8S/ROOF25AElectric moon roof
9TA I L10ATail lights, license plate lights, parking
lights
10PA N E L7. 5 ASwitch illumination, air conditioning
system, display
11RR FOG7. 5 A
12ECU-IG LH10A
Cruise control, air conditioning sys-
tem, power steering, rain sensor, anti-
glare inside rear view mirror, shift lock
system, moon roof, tire inflation pres-
sure warning system
13FR S/HTR LH15ASeat heaters and ventilators

5
When trouble arises
347
5-2. Steps to take in an emergency
■If the tire pressure warning system is inoperative
The tire pressure warning system may become inoperative in the following circum-
stances:
●The vehicle’s wheels have not been equipped with tire pressure sensors.
●The sensor batteries are dead.
●If wireless frequencies the same as those used by the sensors are being used by
other facilities or equipment in the vicinity of the vehicle.
●If snow or ice has collected on or around the wheel or wheelhouse.
●If non-genuine wheels are used on the vehicle.
●When driving with tire chains.
●If wireless devices or other equipment that operate on similar frequencies to
those used by the sensors are being used
●If the select switch is used to select the wrong set of sensors (wheels)
●If the tire pressure was not set to the specified level when the system was initial-
ized
NOTICE
■Precaution when installing a different tire
When a tire of a different specification or maker is installed, the tire pressure warn-
ing system may not operate properly.

352
5-2. Steps to take in an emergency
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates low tire pres-
sure.Check the tire pressure,
and adjust to the appropri-
ate level.
(Flashing)
(If equipped)
Indicates that the pre-
collision system is not
currently functional.
Clean the grille and the
sensor.
This message appears
when the pre-collision
system is hot. In this case,
wait until the system
cools down.
(If equipped)
Indicates that Lexus
parking assist-sensor is
dirty or covered with ice.
Clean the sensor.
(If equipped)
(Flashing)
Indicates that the radar
cruise control sensor is
dirty or covered with ice.
Clean the sensor.

411
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Po w e r w i n d o w
• After reconnecting or changing the
battery
• After changing a fuse
P. 4 5
Engine oil maintenance
dataAfter changing engine oilP. 2 7 2
Tire inflation pressure
warning system
• When the standard tire pressure
changes by replacing tires or wheels
• When tires are rotated
• When tire pressure sensors are
replaced
• When driving with the tires inflated to
a higher than standard tire pressure
P. 2 8 4
The following item must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

422
Alphabetical index
Shift lever lighting .................................209
Shift lock system .................................... 367
Shopping bag hooks............................238
Side airbags................................................. 61
Side marker lights
Switch ........................................................ 122
Side mirror
Adjusting and folding ......................... 43
Driving position memory.................. 28
Smart access system with
push-button start
Entry function..............................................4
Starting the engine ............................... 98
Spare tire
Inflation pressure................................ 293
Spare tire................................................358
Spark plug ............................................... 385
Specifications ........................................ 380
Speedometer
Speed indicator ................................... 109
Speedometer........................................ 109
Steering wheel
Audio switches ................................... 207
Driving position memory.................. 28
Manual adjustment .............................. 40
Power adjustment .................................. 41
Storage feature....................................... 213
Stuck
If your vehicle becomes stuck......377
Sun visors .................................................. 219
Sunshade
Rear .......................................................... 233
Roof ............................................................. 49
Switch
ECT switch .............................................102
Engine switch.......................................... 98
ETCS switch.......................................... 105Fog light switch .................................... 125
Light switches.........................................122
Power door lock switch...................... 19
Power window switch ........................45
Satellite switches................................. 222
Transmission shift switches ............ 103
Window lock switch ............................45
Wipers and washer switch............. 126
Tachometer
Tacho indicator ....................................109
Tachometer............................................ 109
Tail lights
Switch .........................................................122
Theft deterrent system
Alarm.......................................................... 56
Engine immobilizer system ..............54
Theft prevention labels.......................... 58
Tire inflation pressure ......................... 293
Tire information
Glossary ................................................ 403
Size ........................................................... 400
Tire identification number ............. 399
Uniform tire quality grading........... 401
Tires
Chains......................................................... 161
Checking............................................... 283
If you have a flat tire ......................... 358
Inflation pressure ................................293
Inflation pressure sensor ............... 284
Information ........................................... 398
Replacing .............................................. 358
Rotating tires........................................ 283
Size ........................................................... 389
Snow tires.................................................. 161
Tools...........................................................358
T

423
Alphabetical index
Total load capacity................................. 160
Towing
Dinghy towing.............................166, 167
Emergency towing ........................... 328
Trailer towing.........................................165
TRAC (Traction control) .................... 148
Traction control (TRAC) .................... 148
Transmission shift switches..................103
Trip meter..................................................109
Trunk
Extending a space ............................ 235
Opener.......................................................23
Trunk light
Trunk light ................................................. 24
Wattage ................................................. 394
Turn signal lights
Replacing light bulbs ......................... 319
Switch ........................................................ 107
Wattage ................................................. 394
Vanity lights
Vanity lights .......................................... 220
Wattage ................................................. 394
Vanity mirrors........................................... 220
VDIM (Vehicle dynamics
integrated management)................. 148
Vehicle dynamics integrated
management (VDIM) ....................... 148
Vehicle identification number ..........381
Vehicle stability control (VSC) ........ 148
Ventilators............................................... 230
VSC (Vehicle stability control) ........ 148Warning buzzers
Brake system........................................339
Open door ............................................ 341
Seat belt reminder ............................ 340
Warning lights
Anti-lock brake system (ABS) ... 340
Brake assist system .......................... 340
Brake system........................................339
Charging system............................... 340
Electric power steering
warning light .................................... 340
Electronic engine control
system ................................................. 340
Low fuel level ........................................ 341
Low tire pressure warning
light ......................................................... 341
Master warning light.......................... 341
Open door ............................................. 341
Pre-collision system......................... 340
Pretensioners ...................................... 340
Seat belt reminder light.................... 341
SRS airbags.......................................... 340
Warning messages
AWD system .......................................345
Dynamic radar
cruise control....................... 345, 349
Engine oil level ....................................349
Engine oil maintenance ..................349
Engine oil pressure ...........................344
Hill-start assist control .................... 348
Hood ........................................................349
Lexus parking assist
sensor ...................................... 345, 349
Moon roof .............................................349
Open door ............................................349
Parking brake ......................................349
Pre-collision system............. 345, 349
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