Lexus IS250 2006 Owner's Manual page 299

● When replacing only the tire, the sensor already installed on the wheel
does not need to be replaced.
● Replacing both a wheel and its sensor.
When new tire pressure sensors are installed, new sensor ID codes must be
registered in the ECU and tire inflation pressure sensor must be initialized.
(P. 281, 282)
Initializing the tire pressure warning system
■
The tire pressure warning system must be initialized in the following
circumstances:
● 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.
When the tire pressure warning system is initialized, the current tire
pressure is set as the pressure benchmark.
■ How to initialize the tire pressure warning system
To initialize the system, use the satellite switch. (P. 218)
Park the vehicle in safe place and turn off the engine.
STEP 1
Adjust the tire pressure to the specified pressure (P. 383)
STEP 2
Start the engine.
STEP 3
Make sure to adjust the tire pressure to the specified level. The tire infla-
tion pressure warning system will operate based on this pressure level.
4-3. Do-it-yourself maintenance
4
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