Leaderboard

Hi All, I had for the first time my 12 volt battery go dead, or actually the car went to deep sleep mode to protect the battery. Events that lead up to my 2013 Cmax energi battery problems was once the onset of colder weather started and when I used heated seats and heater going up hill under load in EV mode the wrench light would come on. When I got home, parked the car usually a couple hours later the battery would be discharged down to 8 v. After a couple of weeks of Jumping with my little pack I had a few days off to do some diagnosis....I found it odd that each time I turned the car off, let it sit, Battery drained to 8 v, used jump pack and restarted, the wrench light disappeared until I used heat or the EV button......at which point the wrench light would reappear. I knew there had to be a parasitic draw somewhere but could not figure it out.......until....I dropped my keys as I walked in front of the car, bent down to pick them up and that is when I heard a whirling noise.....I didnt know what it was but it sounded like when I preheat the car, it was the same noise.....Anyways.....I pulled the fuse for the Heater controls, waited 5 minutes to re-insert and VOILA, that solved my parasitic drain! Place your ear just above your front plate and listen for any electrical noise....this may or may not be the issue but its worth a shot!