What would cause a 2010 to lose connection? It receives from transmitter and then you can watch the bars slowly fade away and after 20secs all bars are gone and never connect back until i reset it then it does same thing over. And that's with both units right beside each other. I have changed batteries and no luck.
The sensor should be sending a signal every 18 seconds or so. Do you see its red LED flash?
Maybe the bars are vanishing because it never hears a signal in those 20 seconds, thus it assumes nothing is in range.