If you are having radio / nav / bluetooth troubles read this!
My 2012 Wrangler periodically would lock up the stereo / nav unit. Stopping, turning off the key opening the door, shutting the door and restarting often worked. When it didn't I looked to the fuse panel under the hood. What I found was most of the fuses were able to be depressed a little into their sockets. After doing this, it always returned to normal. This had to be repeated every couple of weeks. Irritating but no big inconvenience.
Fast forward. Wrangler gone, replaced with 2015 Summit. At first was trouble free in the radio / Bluetooth / nav department. Yea! More recently ( owned for 18K miles so far ) I have been having issues. Sometimes it wouldn't recognize the iPod attached via USB. Sometimes it wouldn't recognize the Bluetooth connection to my phone. On two occasions, on it's own, it decided to crank my volume to the max while the knobs that adjust the volume ( including those on the steering wheel ) were not responsive. It has also simply refused to react to screen presses, button presses, etc. but without the 100% volume. Since stopping the car, ignition off, open then close door and restart usually fixed the problem I didn't think to play with the fuse box...
Till today... today on the way to get an oil change, the radio system rebooted while heading over the dealer. I mentioned the radio but was told they didn't have time to look at it today. ( was there at 6:30 am btw ) In any case after they returned the car to me I popped the hood and fuse cover. It is similar to the one in my last Jeep. Pressed on each and every blade type fuse. EVERY SINGLE ONE clicked into its socket a small but noticeable bit.
Is this the source of my troubles? Not sure but I am suspicious. Will repost here if the seating of the fuses has an impact on my head unit problems. If these are placed by a machine, I can see a machine not pressing down on the fuse set with pressure. There is no way a human would put a fuse in like mine were seated. If they were seated that way by a human then the only explanation would be vibration causing their unseating. That was the assumption I had with my Wrangler. My GC is much smoother so I didn't think the fuses could be the problem.
If you check your fuses, PLEASE REPLY HERE to mention if your fuses were fully seated in their sockets and if you have head unit non-responsiveness or rebooting as an issue.
2015 Jeep Grand Cherokee Summit 4 x 4 V6