Lexus LS460 2011 Owner's Manual page 680

equipped professional. (P. 646)
Initializing the tire pressure warning system

The tire pressure warning system must be initialized in the fol-
lowing circumstances:
 When rotating the tires on vehicles differing with front and
rear tire inflation pressures.
 When changing the tire inflation pressure by changing travel-
ing speed.
 When changing the tire size.
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
STEP 1
Park the vehicle in safe place and turn the "ENGINE
START STOP" switch OFF.
While the vehicle is moving, initialization is not performed.
STEP 2
Adjust the tire inflation pressure to the specified cold tire
inflation pressure level. (P. 757)
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 "ENGINE START STOP" switch to IGNITION
ON mode.
LS460_EE
4-3. Do-it-yourself maintenance
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