Tach, gas gauge were dead after a jump and climate control had gone to centigrade. I drove 25 miles this way with no change. I then removed the 3 fuses (1,43 & 45) and checked, none blown. Reinserted the fuses and all is now normal. I'm elated but a little puzzled. The best theory that I can come up with is a computer was affected by the low voltage but would not "reset" until fuses were removed (0 volts) and replaced (spec voltage). - Cheers and may your fix be as simple.