So far it hasn't reoccurred. Here's the TSB: http://www.esghotwire.com/bulletins/...TC_Present.pdf
Sounds like the issue I had with over voltage. The dealer replaced the voltage regulator. There's actually a TSB for this, 2031145/2. It seems to be a common enough issue to issue a TSB and the same voltage regulator is used across most of the model line (A4, A5, A6, A7, Q5, Q7). Interestingly enough it doesn't explicitly list the S4 but the symptoms are the exactly the same. Maybe they don't list the 'S' variants and just fall under the 'A' line. Here's the repair order:
So far it hasn't reoccurred. Here's the TSB: http://www.esghotwire.com/bulletins/...TC_Present.pdf
So far it hasn't reoccurred. Here's the TSB: http://www.esghotwire.com/bulletins/...TC_Present.pdf
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