2011 4.6 Key Fob issues

[Rhino11950]

I have replaced the batteries in both fobs, but no luck. They don't do anything (unlock doors or trunk) and I have to insert into dash to start the car. Any ideas?

 

[Hero6]

Did they work anytime before you replaced the batteries?

 

[edizzle89]

can the fob batteries be put in backwards?

 

[scottdk]

Does your nav screen and dome lights still work? I ask because twice now I had it where I had to insert the key to start the car, which was very odd since I have a new fob battery. The 2nd time I had an issue the car wouldn't even start! I went into the driver side door and opened the fuse panel and touched every fuse in the panel and when I hit the master fuse (the one with yellow plastic around the fuse) everything turned back on. Turns out somehow my fuse wiggles loose every few weeks, so I probably need to figure out why, or just replace the fuse.