Got my model X last week and I'm loving it, it's an amazing car. My Pixel 2 has the Pie OS. One major problem that I've had since I got the car was my Pixel 2 Bluetooth kept on disconnecting and reconnecting every 30 seconds or so without fail. It would get in contact and then disconnect and then connect and disconnect. Not being able to make phone calls while I'm driving was a real annoyance. I tried to restart my phone, I tried to reset the car, I enabled developer options in my settings and tried different versions of Bluetooth. Nothing worked. I tried the process of elimination and started turning off different options within the Bluetooth settings. I realize that if I kept the phone call only and turned off the audio/media, plus HD audio, plus phone book syncing, the Bluetooth problem goes away and the phone stays connected! I know it's not ideal especially with the contact not being synced but at least I can make phone calls while I'm driving plus using the OK Google command on my phone helps make the calls hands free. Give it a shot and let me know if that works!