I've tried to get it to transmit by spinning it in a variety of ways, but no luck so far.
It seems that it takes longer than one would think it should to transmit. When I've tested my battery replacements
(on the older model of course) on the wheel balancer it usually takes two minutes of spinning for it to show up on the dash with a pressure. I'm sure I've heard that it can be swung around on a string or cord, but I'm not sure how long folks are spinning them that way before they get results.
I've always assumed that they went into "sleep mode" when ever they were not spinning.
Are you sure those aren't the ID numbers above the bar codes? Granted they are longer numbers than the old ones were but just maybe that's them.
My older style TPMS the bar code matches the ID number, makes sense that the new style would too even if its a different format. I've not heard of any TPMS units that didn't have the ID number on the unit, unlike passive FOBs which reportedly only have it on the outer baggie.
There is also another possibility, when you strip the leading 5200 off of the bar code numbers and convert the remainder to hex, you get the same 8 digit format that are on my old style sensors. ...yeah, I guess that's a stretch.
Regardless, keep up the good work there Red'.