2006 lexus gs300 tire pressure reset button

there is not a reset for the tire pressure monitor system, the system resets its self when all tires are inflated to the proper psi. 35 psi . dont forget about the spare. if all tires are properly inflated check the "2nd set" switch. it is located under the dash on the passenger side. sometimes they get bumped accidently. unless you have a 2nd set of wheels with sensors the switch should be set to "main"