Hey Guys, I have been a lurker on this forum since I bought my F150 last fall, and it's a great forum. But I started having an odd issue recently and could really use some help! I was camping last weekend, and so I used my truck's power outlets a few times over the course of the night. When I started my truck the next morning, several things were all not working or showing faults at the same time. The items affected by this are:

- Fault with cross-traffic and BSM systems
- No power mirror controls
- Can not roll down the front windows, but can roll down rear windows, box window, sun shade and moonroof
- No climate controls at all, either by touch screen or physical buttons below, including heated/cooled seats
- Radio works via touch screen or steering wheel controls, but does not work with physical buttons below the touchscreen
- Navigation Fault, no compass and map will only show the location where vehicle was started even while moving elsewhere
- Ambient air temp is no longer displayed
- Tire Pressure Monitoring system has a fault

Here are a few more details: The locks, door keypad, and keyfob and autostart all are working fine. There are no "service engine" or other warning lights besides the faults I mentioned above. And, most oddly of all, is the truck will actually snap out of this for 10-30 minuets at a time, and everything will go back to working like normal, only to have it go back to this issue with the exact same symptoms and non-working components every time. And it's completely random. It isn't brought on by weather, bumps in the road, or changes in driving. It just works for a while then stops.

Lastly, here's what I've tried so far:
- Pulling battery cable off and leaving it for 30 mins
- Checking all fuses and relays - didn't notice anything out of sorts
- Checked all electrical connections and wire harnesses I could access for signs of damage or loose connections

Sorry for the wordy post but it's required to describe the whole situation. ANY help, ideas or insight would be very much appreciated!

 

Three times now my screen hasn't come on after startup. Happened two drives in a row, then it didn't happen again for probably two months. I am not going to take it to the dealer because I know what they are going to say. With the number of issues you are having... I would take it in.

Good luck!

 

Just a note - I know this is likely a complex issue, but my truck is out of warranty (95k miles), and my local Ford dealers can't get me in for about 10 days - so I'm willing to try anything and am pretty capable with auto repairs. I'll take any suggestions!

 

I had some wonky electrical issues a while back where random things stopped working once in a while. Turned out to be the negative battery cable wasn't fully seated. It looked fine, but had about 1/8 inch to be fully seated. I loosened it, tapped it all the way down, tightened it, and it's been fine since.

 

How's the battery? These modern vehicles can do some really strange things if the battery is weak.

 

I'm going to say you've likely got a weak battery on your hands. Modern cars work well in a narrow power window...when CCA gets low or batt voltage/integrity (not charging voltage BUT batt voltage) start getting borderline you may see many aux systems start freaking out. I'd have your battery tested as soon as possible. I'm a 10 year AAA battery technician with a large NorCal AAA contractor & I am also a AAA battery tech trainer/teacher. Start with the battery...

 

Hey guys, I checked the battery and even though it tested ok, i replaced it to be sure. Also left it disconnected from battery for 45 mins before I changed it. Unfortunately, the same problem is still going on 🤬. I'll gladly take any more ideas.