GLBorchert

Parasitic battery drain seems quite common, though I'd think that the parasitic problems that emerge over time should be fairly common. That is, other owners should experience the same issues. I have 113,000 miles on my 2013 Outback Limited 2.5i, and have had no electrical problems at all in the five years I've owned the car. Suddenly one day my one year old battery was dead - completely dead - so I replaced it with a new one and charged up the dead one, leaving it in my garage. The next day the brand new battery was dead - completely discharged - wouldn't even unlock the doors. I put my charged up old battery in, started the car and then tested the alternator and the voltage regulator. Perfect readings on both. The battery is being charged while I'm driving but something is draining the battery overnight. For something to completely drain a brand new 650 CCA battery literally overnight, there has to be a serious parasite. Tomorrow I'll check the drain with the car off, and start my troubleshooting. I really am surprised, though, that I haven't been able to find reports of that kind of culprit on the web, on this or any other forum. There's likely a common problem, a particular switch or relay, that is staying engaged when it's supposed to turn off. I have of course turned off all the interior lights in the car, turned off all manual switches (lights, HVAC, radio, etc.) overnight. Anything I can turn off is off. That has made no difference. Once I figure out what is happening, I'll report back, and maybe that information will help someone else in the future. If anyone here has had a similar experience, I'd appreciate knowing their culprit(s).