I have a 2010 santa fe that won't start. I have good voltage at the battery when tryng to start but the relay justs clicks like a low battery. I measured the voltage from battery to engine block and showed 0 volts. I put a charger on the positive battery post and the engine block and it seems something reset and I could measure voltage from the battery to the engine. When I tried to start it the same thing happened and no voltage from batt to engine block again. Anyone with ideas?