I posted this to the ffh specific forum and didn't get any response. Hopefully someone here can help...
A few mornings ago, my ffh shut down as I approached an intersection and wouldn't restart, at least not enough immediately. The cluster would light up with all the engine and drivetrain warnings, but that's it. So I flipped on the hazards and got out to check. Along with no drivetrain power, the hazards weren't working (dash indicator was working and the lights on the mirrors were blinking, but no corner flashers). I did a little poking and prodding under the hood and shortly after lightly tugging a few of the harnesses I noticed the hazards had come on (I don't believe the movement of the harness was related to the lights coming on at this point, but could be wrong) so I tried the key again and the car started and ran normally.... Trying to get it sorted before the next family road trip and any advice is appreciated.
Here's what I know for sure.
It was 15F when the shutdown occurred. And the car had driven ~1 mi since a cold start after being outside overnight.
The 12v battery is about 4y old and today a battery test showed it "is good but needs a charge.
The alternator is working properly.
The hybrid battery was over half charged when the shutdown occurred.
The day before, I got an error on the Right side dash screen that said it had "temporarily lost contact with touch screen" (I don't believe the car has a touch screen anywhere)....
Any ideas on where to look next? I suspect the battery but am not sure yet.