With COVID, SC visits are evolving. Latest "touchless" methodology here in northern VA: drive MX to the SC. Upon arrival, receive a message in Tesla app that gives you an Uber Voucher that can be immediately applied to the Uber app. Once Uber app is applied, call an Uber. While waiting on Uber to arrive, grab envelope from key drop box and complete info on envelope. Put MX key in envelope, seal envelope and then drop envelope in drop box. Uber arrives, get in and ride to destination. When car is ready, make sure to grab extra MX key. Take Uber back to SC. Upon arrival, car will be parked outside SC, locked with original key in cup holder DISASSEMBLED - battery taken out. I didn't know why my key was disassembled first time this happened. Went inside dealership only to find out this was intentional so that doors to car would stay locked even with key inside car. Second key allows you access to the car. Car could also be unlocked with Tesla app on smartphone.
So, don't be surprised that you need to reassemble your MX key when you pick up your car.
So, don't be surprised that you need to reassemble your MX key when you pick up your car.