Yeah if there's no +12v then everything would eventually run out of juice and reboot. Sounds like either there is a calibration issue or a physical hardware/sensor issue within the scale system. If it were me I'd run the calibration procedure in Forscan and see what happens (make a backup of...
I would think it just reads the module and sensors and puts them back to factory? Maybe you could find the module itself and reboot it within Forscan first. It already doesn't work, so why not?
To reset the Ford F-150 Lightning's SYNC system, you can perform a soft reboot or a master reset. For a soft reboot, press and hold the power button (on the volume knob, if available) and the seek right button simultaneously for about 10 seconds, according to Ford.
every car I've ever had (including Volt's, Mach E and now the Lightning) when in accessory mode the battery and some other lights as well, are all illuminated...normal
Mine was torqued properly. So they just replaced the nuts with a newer revision and brought it back to me. About 3 hours all in including the hour drive each way.
I just bought a new '25 flash on 5/24, got a notice on the fordpass app 5/29, got a text form the salesman 5/29 asking to pick up truck to remediate as they can't finalize sale until it's been done. Truck was manufactured on 2/14/25.