Our MCU on our 2015 Model S with AP died on 3/12. Scheduled through the app and initially had a mobile appointment like many others and it was changed to a Service Center Appointment for tomorrow 3/26. They cancelled it today and moved it to next week. I texted why and they said the parts have not arrived yet. They did send a new estimate that is much higher than the original one. Looking at the price, I think we're getting a MCU2 !! Waiting to get confirmation that is the case via text. This is the estimated invoice, is that part number an MCU2?