For those of you with after market rims...
What does the tire pressure monitor do when you install after market rims and you DID NOT have the special OEM valves installed? Does the monitor stay lit? or it does nothing at all. Will the sensors work again if you put the oem rims back on.

for example: winter tires on cheap(er) rims (without air pressure sensor) and swapping for the oem sets in the summer...