This is strange...
My summer set has oem TPMS. While on, car was programmed for these TPMS.
Then, I got a new winter set with EZ-sensor. On installation, they programmed the car for these new TPMS.
For some reason, I had to put the summer's back. I thought I'd had to reprogram again, but not, it picked them up back.
All this time I thought the car would keep only 1 set of TPMS.
I got it!
The ECU does keep 1 set (4 tpms).
They just programmed the EZ-sensors with the oem ID's




