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Recently there was a storm and it killed my car. I'm not sure how, but I'm guessing some of the heavy rain got somewhere it wasn't supposed to.

It completely drained the battery. It also messed up some of the electronics - it reset the miles-to-service counter to -90000. It also caused a fault with the FTM which also causes a fault with the ESC. This means I can't change the economy mode, I can't use cruise control, and it doesn't hold itself when starting on a hill.

I have no idea what could be broken or how to fix it. I got a friend to clear all the fault codes but they all came straight back.

Any idea what the issue could be? Everything else works fine, and since jumping the car, the battery has been fine.
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