I've currently got all my sensors laying in bits on my missus coffee table.
I actually do no know if any of them work, as I haven't been able to test them.
The reason I've dismantled them is partly curiosity, and partly as I wished to check all the soldering, as well as the issues mentioned in these articles:
http://www.zr1netregistry.com/Information/TechNet/EngineDrivetrain/Drivetrain/tabid/138/articleType/ArticleView/articleId/102/categoryId/33/Low-Tire-Pressure-Sensor-LTPS.aspx
http://www.zr1netregistry.com/Information/TechNet/EngineDrivetrain/Drivetrain/tabid/138/articleType/ArticleView/articleId/103/categoryId/33/Low-Tire-Pressure-Sensor-LTPS-Revisited.aspx
I did however not wish to re-assemble without replacing the capacitor, but I am not comfortable enough in the world of electronics to decide exactly which to buy.
The current one is specified as a 22uF 25V 80°C (Axial, through hole type?)
Any hints on where to find a replacement?