I did not order TPMS, it is not on my option list, I didn't pay extra for it, but it is also not on my "sticker" list of standard equipment. Yet, it is absolutely there. Build date 5/05

With respect to my winter wheel issue, I learned today that different Mercedes models use sensors from different manufacturers. Apparently, the 2006 E55 uses sensors different from 2005. TR did not know this so they shipped my and I installed 2005 sensors which are not "recognized' by the car. TR is shipping me 2006 sensors and when I install them this should, hopefully, fix the problem. I'll keep you posted.