'17 Springfield, '20 Chieftain
Does anyone know where the TPMS signal is picked up by the VCM. Is there a receiver or antenna on the frame somewhere. My 2017 Springfield front TPMS is becoming intermittent once again. It was replaced under warranty at around 13000 miles and now I have a little over 20000 and it is acting up again. There are quite a few threads about TPMS failure to read issues and most of those are for the front TPMS sensor. Before my first one was replaced under warranty, the dealer reset it and indicated it was fine. Although, as it continued to degrade like my current one, it took longer (more driven miles) before it started to read. When new, it would respond within a block or two. Now it is taking about 8-10 miles of travel before it is read. My belief is that the battery in the sensor may be weakening. But, it should still be read if the receiver / antenna were closer to the tire. I have looked at the Service Manual and the only antenna I see in the schematics is the one used for the FOB / Security system. Is this same antenna possibly serving to roles? If is is used for the TPMS signal as well, it might explain why there are more failures with the front sensor than the rear since it is located closer to the rear tire. Any ideas?