Not sure what year Ford added the "smart charging" to Rangers, but these like GEM and Computer(PCM) are micro processor based devices.
And I have never run into anyone who hasn't encountered an "odd" occurrence with a microprocessor driven device, especially in "brown out"(low power) conditions which is worse than no power.
That's why I find it odd Ford would offer the "never heard of that" "or "can't cause that" statement, Ford doesn't even make a vehicle that doesn't have at least 2 microprocessors in it, many have 5 or 6 now.
Like they say "it is all just 1's and 0's", but the 1's and 0's have to be set and correct, when you lower or vary power not all the 1's get set, and 1010 1010 is way different than 0010 0010, and that's why voltage is so important, just watch the Matrix, lol, kidding, but that's why your smartphone, computer and toaster have to be rebooted, 1's and 0's in the wrong places locked it up or gave it the ERROR screen.
Last edited by RonD; 12-14-2014 at 05:24 PM.