Hello all. Noticed over the last couple days that the keyless entry range has weakened significantly on my 2003 Expedition XLT. The range had already been less for the last few years than when we bought new but now most of the time the key fobs won’t work at all. Just recently in the last 3 days I purchased some additional keyfobs off amazon and they worked just as well as the older ones for a couple days. Now they work only once in awhile. Does anyone know how to troubleshoot this issue? Is there an antenna I can check or a connection that may have gone bad?