Tire warning Lexus IS250 2012 Owner's Manual

TABLE OF CONTENTSIndex
6
IS350/250_U
5-1. Essential informationEmergency flashers..................... 462
If your vehicle needs to be towed.............................................. 463
If you think something is wrong ............................................. 469
Fuel pump shut off system ........ 470
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer
sounds... ......................................... 471
If a warning message is displayed ........................................ 481
If you have a flat tire..................... 492
If the engine will not start ........... 501
If the shift lever cannot be shifted from P ............................. 503
If you lose your keys ................... 504
If the electronic key does not operate properly .............. 505
If the vehicle battery is discharged .................................... 510
If your vehicle overheats ............ 513
If the vehicle becomes stuck................................................. 516
If your vehicle has to be stopped in an emergency ....... 518 6-1. Specifications
Maintenance data (fuel, oil level, etc.).................... 520
Fuel information ............................ 537
Tire information.............................. 541
6-2. Customization Customizable features.............. 553
6-3. Initialization Items to initialize .......................... 559
Reporting safety defects for U.S. owners........................... 562
Seat belt instructions for Canadian owners
(in French) .................................... 563
SRS airbag instructions for Canadian owners
(in French) ................................... 565
5When trouble arises6Vehicle specifications
7For owners

209
2-5. Driving information
2
When driving
IS350/250_U
NOTICE
■Repairing or replacing snow tires
Request repairs of and obtain replacement snow tires from Lexus dealers or legiti-
mate tire retailers.
This is because the removal and attachment of snow tires affects the operation of
the tire pressure warning system.
■Fitting tire chains
The tire pressure warning system may not function correctly when tire chains are fit-
ted.

340
3-7. Other interior features
IS350/250_U
Change the settings.
Press the “ON/OFF” button to
change the settings (e.g. on/off).
■Items that can be set us ing the satellite switches
STEP3
Intuitive parking assist ( →P. 190) on/off (if
equipped)
Tire pressure warning system initialization
(→ P. 4 1 4 )
ID code selection for the tire pressure warning
system ( →P. 4 1 6 )
Vehicle speed indicator on/off and speed setting
(→ P. 1 6 0 )
Tacho indicator on/off and engine speed (rpm)
setting ( →P. 1 6 0 )

364
3-7. Other interior features
IS350/250_U
Erasing the entire HomeLink memory (all three programs)Press and hold the 2 outside but-
tons for 10 seconds until the indi-
cator light flashes.
If you sell your vehicle, be sure to
erase the programs stored in the
HomeLink
 memory.
■Before programming
●Install a new battery in the remote control transmitter.
●The battery side of the remote control transmitter must be pointed away from
the HomeLink button.
■Certification for the garage door openerFor vehicles sold in the U.S.A.
FCC ID: NZLWZLHL4
FCC ID: NZLOBIHL4
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.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.

412
4-3. Do-it-yourself maintenance
IS350/250_U
Tires
Replace or rotate tires in accordance with maintenance schedules and
treadwear.
■Checking tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indi-
cators is shown by the “TWI” or
“∆ ” marks, etc., molded on the
sidewall of each tire.
Check spare tire condition and
pressure if not rotated.
■ Tire rotation
2WD models with 16-inch tires or AWD models
Rotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Lexus recommends that
tire rotation is carried out at the
same interval as tire inspection.
Do not fail to initialize the tire
pressure warning system after
tire rotation.
2WD models with non-directional 17-inch tires or 18-inch tiresRotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Lexus recommends that
tire rotation is carried out at the
same interval as tire inspection.
Front
Front

413
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS350/250_U
Directional tiresTire direction marks
The tire sidewalls are marked with
arrows indicating the rolling direc-
tion of the tire. If mounted on the
wrong side of the vehicle, direc-
tional tires will perform poorly.
2WD models with directional 17-inch tires or 18-inch tires
Tires cannot be rotated.
■ The tire pressure warning system
Your Lexus is equipped with a tire pressure warning system that uses
tire pressure warning valves and transmitters to detect low tire infla-
tion pressure before serious problems arise. ( →P. 473, 482)

414
4-3. Do-it-yourself maintenance
IS350/250_U
Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning valves and transmitters are installed,
new tire pressure warning valve and transmitter ID codes must be regis-
tered in the tire pressure warning computer and tire pressure warning
system must be initialized. Have tire pressure warning valve and transmit-
ter ID codes registered by your Lexus dealer. ( →P. 4 1 6 )
Initializing the tire pressure warning system
■ The tire pressure warning system must be initialized in the following
circumstances:
● When rotating the tires on vehicles differing with front and rear tire
inflation pressures.
● When changing the tire inflation pressure by changing traveling
speed.
● When changing the tire size.
When the tire pressure warning system is initialized, the current tire
inflation pressure is set as the pressure benchmark.

415
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS350/250_U■
How to initialize the tire pressure warning system
To initialize the system, use the satellite switch. ( →P. 3 3 9 )
Park the vehicle in safe place and turn the “ENGINE START
STOP” switch OFF.
While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. (→ P. 5 3 1 )
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 START STOP” switch to IGNITION ON
mode.
The tire inflation pressure initial-
ization setting display
Continue to press “<” or “>” until
the initialization setting display
appears.
Recording tire inflation pressure
settings
Push and hold the “ON/OFF” but-
ton until the tire pressure warning
light blinks slowly three times.
Wait for a few minutes with the IGNITION ON mode, and then
turn the “ENGINE START STOP” switch OFF.
STEP1
STEP2
STEP3
STEP4
STEP5

416
4-3. Do-it-yourself maintenance
IS350/250_U
Registering and selecting ID codesTo select tire pressure warning valve and transmitter ID codes, use the
satellite switch. ( →P. 3 3 9 )
■ Registering ID codes
2 sets of tire pressure warning valve and transmitter ID codes can be
registered. Once a second set of tires is registered at “2ND”, you can
switch between tire set settings simply by pressing the tire pressure
warning select switch.
There are 2 settings:
“MAIN” position: The ID code of the tire pressure warning valve and
transmitter on the tires originally installed on the vehicle is registered.
“2ND” position:The ID code is not registered. When you replace a
new set of tires, purchase tire pressure warning valves and transmitters
from your Lexus dealer and have the new ID code registered by your
Lexus dealer.

417
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS350/250_U■
Selecting ID codes
When replacing tires, make sure to select the ID code set that matches
the new tire set. If the tire pressure select switch is set to the wrong tire
setting, the tire pressure warning system will not operate properly.
After driving for about 20 minutes, the tire pressure warning light
comes on after blinking for 1 minute to indicate a system malfunction.
Tire pressure warning valve and
transmitter ID code settings dis-
play
Press “<” or “>” repeatedly until
the setting display appears.
Switching ID codes
Press the “ON/OFF” button to
switch between “MAIN” and
“2ND” ID codes.