You need to open a case with the NHTSA. Get owners to file complaints. If you read over my history of the 2019 FL dash display, you will see that I was successful in getting that dash recall for brightness put thru. It took 15 months, but in the end, a recall was issued.
It all starts with the someone opening a case:
The more owners you can get to register a complaint the more serious it will be with the NHTSA