2014 Lexus IS250 tire pressure reset

17Pictorial index
IS250_EE(OM53C51E)
Driving position memory switches*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 151
Outside rear view mirror switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 163
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 121
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 167
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 167
Tire pressure warning reset switch
*1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 429
PCS OFF switch
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 272
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2
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7
*1: If equipped
*2: For vehicles with a navigation or multimedia system, refer to
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

25Pictorial index
IS250_EE(OM53C51E)
PCS OFF switch*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 272
Tire pressure warning reset switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 429
Outside rear view mirror switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 163
Driving position memory switches
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 151
Window lock switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 167
Power window switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 167
Door lock switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 121
*1: If equipped
*2: For vehicles with a navigation or multimedia system, refer to
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
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4297-3. Do-it-yourself maintenance
7
Maintenance and care
IS250_EE(OM53C51E)
■How to initialize the tire pressure warning system
Park the vehicle in a safe place and turn the engine switch off.
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire inflation pressure
level. (→P. 5 4 6 )
Make sure to adjust the tire pressure to the specified cold tire inflation pressure
level. The tire pressure warning system will operate based on this pressure level.
Turn the engine switch to IGNITION ON mode.
Press and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.
Wait for a few minutes with the engine switch in IGNITION ON mode and
then turn the engine switch off.
◆Registering ID codes
The tire pressure warning valve and transmitter is equipped with a unique ID
code. When replacing a tire pressure warning valve and transmitter, it is nec-
essary to register the ID code. Have the ID code registered by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
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4317-3. Do-it-yourself maintenance
7
Maintenance and care
IS250_EE(OM53C51E)
■Situations in which the tire pressure warning system may not operate properly (vehi-
cles with a tire pressure warning system)
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• Lock nuts are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel
housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If tires not equipped with tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered
in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air-
port or other facility that generates strong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless
communication device
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the
warning may not function.
■The initialization operation (vehicles with a tire pressure warning system)
●Make sure to carry out initialization after adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire inflation pres-
sure adjustment.
●If you have accidentally turned the engine switch off during initialization, it is not neces-
sary to press the reset switch again as initialization will restart automatically when the
engine switch has been turned to IGNITION ON mode for the next time.
●If you accidentally press the reset switch when initialization is not necessary, adjust the
tire inflation pressure to the specified level when the tires are cold, and conduct initial-
ization again.
■Warning performance of the tire pressure warning system (if equipped)
The warning of the tire pressure warning system will change in accordance with the con-
ditions under which it was initialized. For this reason, the system may give a warning even
if the tire pressure does not reach a low enough level, or if the pressure is higher than the
pressure that was adjusted to when the system was initialized.

4327-3. Do-it-yourself maintenance
IS250_EE(OM53C51E)
■When initialization of the tire pressure warning system has failed (vehicles with a tire
pressure warning system)
Initialization can be completed in a few minutes. However, in the following cases, the set-
tings have not been recorded and the system will not operate properly. If repeated
attempts to record tire inflation pressure settings are unsuccessful, have the vehicle
inspected by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
●When operating the tire pressure warning reset switch, the tire pressure warning light
does not blink 3 times.
●After carrying out the initialization procedure, the tire pressure warning light blinks for 1
minute then stays on after driving for 20 minutes.
■Registering ID codes (vehicles with a tire pressure warning system)
The ID codes of the tire pressure warning valve and transmitters for two sets of wheels
can be registered.
It is not necessary to register the ID codes when replacing normal tires with snow tires, if
the ID codes for the wheels of both normal tires and snow tires are registered before-
hand.
For information about changing ID codes, ask any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.

4347-3. Do-it-yourself maintenance
IS250_EE(OM53C51E)
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drivetrain as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Vehicles with a compact spare tire: Do not tow if your vehicle has a compact spare
tire installed.
●Vehicles with an emergency tire puncture repair kit: Do not tow anything if a tire that
has been repaired using the emergency tire puncture repair kit is installed. The load
on the tire may cause unexpected damage to the tire.
■When initializing the tire pressure warning system (vehicles with a tire pressure
warning system)
Do not operate the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the specified level. Otherwise, the tire pressure warning light may
not come on even if the tire inflation pressure is low, or it may come on when the tire
inflation pressure is actually normal.

583Alphabetical index
IS250_EE(OM53C51E)
Power window switches ..................167
Rear sunshade switch..................... 400
Rear window and outside rear
view mirror defoggers
switch....................................................382
Seat heater switches ....................... 388
Seat ventilator switches ................. 388
Snow mode switch ............................ 198
Talk switch .............................................356
Telephone switches..........................356
Tilt and telescopic steering
control switch .................................... 159
Tire pressure warning reset
switch.................................................... 429
Trunk opener switch ..........................125
Trunk opener main switch ..............126
Vehicle-to-vehicle distance
button ................................................... 232
VSC OFF switch ............................... 267
Window lock switch........................... 167
Windshield wiper de-icer
switch....................................................383
Windshield wipers
and washer switch ...........................215Tachometer ............................................... 95
Tail lights................................................... 206
Light switch........................................... 206
Replacing light bulbs ......................... 461
Talk switch ............................................... 356
Telephone switches ............................. 356
Theft deterrent system
Alarm .......................................................... 83
Double locking system...................... 82
Engine immobilizer system .............. 77
Intrusion sensor and tilt sensor...... 86
Tire inflation pressure ......................... 436
Maintenance data ............................. 546
Tire inflation pressure display
function ............................................... 428
Warning light....................................... 478T

584Alphabetical index
IS250_EE(OM53C51E)
Tire pressure warning system .........428
Function ..................................................428
Initializing................................................428
Installing tire pressure warning
valves and transmitters................428
Registering ID codes ....................... 429
Tire pressure warning reset
switch.................................................... 429
Warning light ....................................... 478
Tires ............................................................ 427
Chains .....................................................289
Checking ............................................... 427
Emergency tire puncture
repair kit ..............................................507
If you have a flat tire ............. 496, 507
Inflation pressure................................546
Replacing ...............................................496
Rotating tires ........................................ 427
Size............................................................546
Snow tires ..............................................290
Spare tire................................................496
Tire pressure warning system ..... 428
Warning light ....................................... 478Tools............................................... 497, 508
Top strap ......................................................72
Towing ...................................................... 468
Emergency towing ........................... 468
Towing capacity................................. 538
Towing eyelet ........................................ 471
Trailer towing ........................................ 184
Traction Control (TRC) ..................... 265
Trailer towing .......................................... 184
Transmission............................................. 197
Automatic transmission.................... 197
Driving mode select switch.......... 263
If the shift lever cannot be
shifted from P................................... 523
M mode.................................................. 200
Paddle shift switches.......................... 199
TRC (Traction Control) ..................... 265
Trip meters ................................................. 95