Lexus RX450H Manual page 532

equipped professional. (P. 501)
Initializing the tire pressure warning system

The tire pressure warning system must be initialized in the fol-
lowing circumstances:
 When rotating the tires
 When the tire inflation pressure is changed such as when
changing travelling speed or load weight
 When changing the tire size
When the tire pressure warning system is initialized, the current
tire inflation pressure is set as the benchmark pressure.

How to initialize the tire pressure warning system
STEP 1
Park the vehicle in a safe place and turn the "POWER"
switch off.
Initialization cannot be performed while the vehicle is moving.
STEP 2
Adjust the tire inflation pressure to the specified cold tire
inflation pressure level. (P. 633)
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.
STEP 3
Turn the "POWER" switch to ON mode.
RX450h_EE
4-3. Do-it-yourself maintenance
499
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