Did you ever get resolution on this? I am at 56k miles and get 0 amps while AC charging. Service scheduled for Wednesday. They reached out today and informed me it’s most likely the PCS, isn’t covered under warranty and will cost me $1500 USD... I’ve asked to see some documentation on how it’s not covered as part of the battery/drive unit warranty. To me it’s akin to the inverter on the motor failing and saying that it’s not part of the motor warranty. What else in inside this penthouse that can cost me thousands?
To add, I have a coworker who just ordered a Model 3. I told him I’ve only had an amazing experience so far but I’m sure this will scare him away. He keeps his cars for 10+ years and his main concern was the battery warranty. Before today I would’ve told him (apparently incorrectly) everything in the penthouse was covered.
Tesla should definitely point where the warranty excludes PCS. I also had PCS failure and Tesla replaced under warranty and it makes sense to me as it's equivalent to part of fuel management/fill system on ICE cars which is covered under warranty at least for Mercedes.