If the poll wasn't closed, I'd add a PCS failure, currently able to charge at a max of 16A. I have an Oct 2018 3 with 82K miles. I have had this problem for years, but didn't recognize it as a Tesla problem due to the fact that the error message on the screen says something like "the power has been reduced due to a problem with the power grid" - which to me sounded like it was a problem with the energy source, not with the car. I didn't pay too much attention to the message because I use destination type chargers so rarely. Due to that misinterpretation, Tesla now wants to charge me $2,321.51 to replace the PCS and various related components. If nothing else, I would like to see Tesla reword that misleading message. I have refused the repair for now.
I will file a complaint with the NHTSA. I find interesting that the NHTSA issued service bulletin (SB-18-16-011) that is titled Replace Reworked Power Conversion System which has the Section/Group listed as 16 - HV Battery System. If it is indeed part of the HV Battery System, why wouldn't that be covered under Tesla's Battery Warranty? (The manager at Tesla service center was not interested in looking at this SB)
I am most interested in how your arbitration comes out. I am thinking to pursue arbitration, as well. Would love any tips and/or advice. My car is still at Tesla Service Center, I'll pick it up tomorrow not repaired. They will charge at least $185 for a general diagnosis fee plus for any work that I originally authorized as required in their most unfriendly APP process authorizing work before they'll take the car in. Tesla's requirement to communicate through the app to set up service may be efficient for Tesla, but definitely isn't in the customers' best interest.