Hey everyone, I have a 2012 Jetta TDI with about 90k miles.. I'm having an issue with my battery draining overnight or while I'm at work all day. I have had the battery checked at three different places and all checks come back good. I've been through my car at night and there are no lights switched on. Only then did I notice that my UltraGauge is remaining powered up on the 'Scanning ' page while the car is completely (for hours) shut off. So to my eyes, it seems as if the ECU is remaining powered up. Does this make sense to anyone? I've seen talk of this being symptomatic of a bad relay? Thanks for everyones help!