Thanks for your comment and empathy with my situation. From what i see, it's likely you have the same issue. I'm certainly not an expert, but was also told water was getting into the HV and they gave me a loaner and it took about 4-5 months to get my battery back. I recall that it was the top of the pack and a seal corroded - but i'm not sure. All was fine, until it wasn't and Tesla has been a nightmare. I got a 'car may not restart' error, called roadside - they said bring it in - i did, and was greeted with 'we can't get to it for a week' without even saying hello or asking what the problem was. I strongly suggest you get yours checked out while still under warranty. I talked to someone named Russell at corporate who read me policy and was as offensive as could be. Message = FU. Also, they are not honoring my 8th service that i paid for since, from the Dedham SC: "The 8 year maintenance plan expired on 3/31. The appointment was created on 4/10 so it will not be honored, but the service has not yet been performed so we can remove it from the service." If you do experience the problem, as I expect many will - is there anything we can do? Per 2101Guy's comment above - it seems there is no fix and this is a major issue at $16K-21K every four years - not what i signed up for. I have the first production S in the PRM and it has been a great experience until now - Matt B was a supurb SC manager. It's shocking to see what they are doing now.