For those of you that have sensors dropping out while driving.
Are you using any wireless digital thermometers? Typically these wireless thermometers operate at the 433Mhz frequency the same a most TPMS systems. They do cause interference.
I have a wireless thermometer with three remote transmitters. I was having a lot of sensor dropouts until I found out about the wireless thermometers causing interference. I have the TST 507 system and called TST about this problem. I talked to the owner and he acknowledged there is an issue with these wireless thermometers. The fix was to install a repeater. Once I did that no more problems with sensors dropping out.