Any of categories are matching with my issue. 3 1/2 years old, 64,000 miles Tesla model y, ECU, which controls Full self driving , and drive assist system, is fault right after warranty expires. The replacement cost is $2,800. Ds it make sense that ECU fault on the owner? It is only 3 1/2 years old car. It is definitely defective part, but Tesla service is not replace for free. I am concerning if ECU fails while I am driving.