Went into the dealer for 37,500 checkup on my 2019 this week. (I was not seeing the warning message.) Had not previously used them except for the original purchase. (I wanted to try these guys out to see if I could trust them with the ELE234 issue.) They printed out the quote for the checkup which included a $40 oil change, so I had to politely remind them this was an EV. The computer told them about SA512 and they told me they'd need the car until close. That was at 1:00pm. They called me an Uber and sent me home. I called back at 4:30 and they didn't pick up and didn't return my call. Glad I didn't actually need my car. Thanks to this forum and other googling, I was prepared for this possibility. I called at 8:30 next morning and they took an hour to figure out my status. Told me they'd need the car until close. I called back at 3:30 and they said it would be done at 3:55, five minutes before close. This seemed way too convenient that they'd finish carefully and thoroughly testing leaks and connections at exactly closing time but I showed up and picked up my car. They said they did six flushes and everything should be good. I asked about the 37k inspection and they said everything was great, including my 4.5 yr old original 12v battery. Surprise.
I was skeptical of this entire experience but I've had three days of no issues so I'm guessing it's fine.[/QUOT
We have the same car and issue. Has your car been ok since June?