Just got mine back same day from SC They gave me a model S loaner and it took about 4ish hours, so overall a relatively painless experience They said they were "proactively" replacing the sensors before any issues come up, who knows
Tap on the “air vent” on the screen to turn on the air on that side. This is to reduce battery drain if the seat doesn’t detect a body on the seat. Fred
My appointment is tomorrow morning. They sent me a message to confirm tonight. They also said it might take more than a day and won’t know until I bring the car in.
Got this from another forum. Tesla to Replace Faulty Model 3, Model Y Heat Pump Sensors | iPhone in Canada Blog