Palazzo Starting Problems: Battery Drain Troubleshooting
Opened my Palazzo's door this morning to a faint electrical buzzing sound coming from the dash area, and now the battery keeps draining overnight. My 2014 Palazzo passed its state inspection yesterday, but when I stopped for gas right after, the engine wouldn't crank. I had to use my house battery boost to get it going. The whole inspection only took about 25 minutes, so I'm confused how that could drain my chassis batteries. When I got home, I put everything on shore power and the batteries charged up in under an hour. I load tested my 4-year-old chassis batteries today and they're showing good. I also checked the engine ground and got 0.5 ohms. I'm worried about getting stranded somewhere and really don't want to pay dealer prices if this is something I can figure out myself. What else should I be checking? Could there be a parasitic draw I'm missing? …more