tire pressure monitor in the 2012 yaris??

[Billiam]

In most cases the OEM sensors can be re-used in aftermarket wheels. However, you most certainly need to replace the seals or risk a leak. The seals can be bought as part of a rebuild kit or just by themselves quite cheaply at the dealer. Just hand them to your local tire shop guy and ask him to replace them when he pulls the sensors. Takes seconds for him to do so.