I have a 06 4Runner I bought certified used. It had steel valve stem caps on it that corroded onto the stem. I used a nut driver to break them loose, Very light pressure twisted the stem off. Tire pressure sensor is incorporated onto the stem, and 186 dollars to replace one!! Be sure your vehicle has plastic caps!!
It will not be covered by toyota. They stated that it is a corrosion issue which isn’t covered by warranty.
106 bux for the sensor, 79 dollars to install and program the vehicle.
The stem is aluminum and very soft. Poor design on multiple points. German cars have replacable stems on the sensors. Which is a 6 dollar item. Mine is molded one piece design that you can not fix.
That’s ok, Dill valve stems(short rubber) made in most of 06-07 were recalled because they tear off while your drive down the highway if it makes you feel any better, atleast yours hold air to begin with!