Had an MS for 2.5 years - solid good experiences with customer service for the most part. Out of country and my wife finds that the MCU is totally gone. Calls roadside, they say that as the vehicle is able to be moved book it into a service center. Important to know that at this point the car has no sensors, no navigation, no backup camera, no user profiles and no A/C or even fan! Service is booked online (chat is never present on the website) and it schedules Ranger - had to select Other as there is no "most of my car does not work" option. Still 8 days out. I try to reach a human at Tesla to say this unacceptable - all routes lead to an IVR which directs to website and claims of the elusive "chat with expert". Call roadside again, no dice. Thursday get text to say Ranger canceled as they cannot deal with the issue, booked into service center (presumably at the cost of 5 days delay). Now scheduled for Tuesday at 11am (today). I return the following Sunday - car has not been used due to close to 100 degrees - with no air circulation let alone all the other concerns about driving a crippled car. Car is in deep sleep, will not wake up - after two hours of messing around call roadside who agree to tow. I open the driver's door ... and it wakes up. Call roadside - yes they will tow, but at my cost. Okay leave it - I'll hope it drives okay on Tuesday. Tuesday. Car takes ages to wake up. Back out of garage, need to get out to close door as no control from car obviously. Car goes to sleep again in the minute or so I am out. Dive straight to Tesla. Suggestions I am not going to get a loaner as others are ahead in the queue today. First sign of old Tesla when I relate the whole story and they at least find me an old MS to drive. Waiting for update. Very unhappy. There should be a way that an essentially undrivable car gets priority - I am sure a human would prioritize, but you can no longer reach them. So much for ensuring that service levels remain the same as the company scales up. Wife says cancel Model Y deposit, and find something from elsewhere next year. Rant over.