Coupe dont see any signs of leaking from the spoiler or the trunk lid. There was a little rust around the drain hole below styrofoam. But considering it started life up in Michigan and NY then Florida for the last 10 years not obvious sign. I have not had any other battery issues so far. I need to trace an electrical issue down when I get time to work on her. As there does not appear to be power going to Map lights / Homelink/TPMS system. Though it was clear by how the foam came out that someone had been in there before.