A few weeks ago I got a flashing yellow warning light and a message of Car Needs Service for my 8 month old P90D. So I called the Service Center, and without boring you with the details in the middle, it was determined that my main battery was throwing codes and needed to be fixed. With the battery under warranty for 8 years, my expectation was that this would be handled like any repair of failed parts I've had with cars in 50 years of driving, namely that the defective unit would be removed and a new part put in. Nope, as it was explained to me, that's not how Tesla does things. Instead, the sequence is: a loaner battery is shipped in to the SC my battery is removed and the loaner battery is installed my battery is shipped from PA to CA my battery is re-manufactured my battery is then shipped from CA back to PA the loaner battery is removed and my remanufactured is installed When I asked how long this would take, I was told a month, possibly 2, depending on how backlogged the remanufacturing operation was. When I asked why they did this extended process which makes the SC do twice as much work, one of the reasons stated was that with my battery re-installed, the serial numbers would be back to original. I didn't want to continue the conversation, but a reasonable person would ask how many people care if the serial numbers match. My car runs fine with the loaner battery with a different serial number. I think this is the single most insane and costly process I've heard of in a very long time. And, given that the overall duration is dependent on how backlogged the re-manufacturing operation is, would suggest that main battery failure is happening at a pretty good clip. Anyone out there have a similar battery failure?