I've had my Sig S since the end of September, 2012, and driven it some 21,000 miles. On Friday I had occasion to use an HPWC for the very first time, but the charge rate maxed out at 40A. A quick look at the charging screen confirmed that the car believed 80A was available and selected, so I called Ownership. It took the rep who answered the phone less than 30 seconds to determine that my slave charger was not communicating. A few minutes later I got a call from my local service center and scheduled a service visit to have it replaced. Since I purchased Valet service they'll come and get the car and it'll be little or no hassle to me...except that I was 1000 miles from home on a road trip and could really have used that 80A charge to get me back on the road a few hours sooner. My question is this: since the slave charger's problem was readily available to the front-line Ownership phone rep (and so far as I know, the slave charger could have been defunct since I bought the car), could/should Tesla have remotely diagnosed the problem and proactively contacted me for service? Or do privacy concerns trump this potential benefit to owners?