Yesterday I put some TSS wheels on my truck ('18 TRD Sport). The gentleman I bought the wheels and tires from told me he got them from another guy who took them off a '17 Taco. This morning on the way to work the TPMS light starts flashing then stays on solid. A search on Google suggeats resetting the sensors. Tried that but no luck. Stop by Discount Tire on the way home and the service guy grabs his reader to check the sensors. None of the sensors put out a signal. He tried '16, '17, and '18 with no luck. Checked to see if there was a lock on the sensors but nothing came up. I thought maybe the wheels and sensors were older than '17 but the tires were mfg'ed in '16 (practically brand new still) so I would assume the batteries would still be good. Aside from dead batteries, what could cause the sensors to not put a signal? Is there something tire tech didn't check or know?