My Model X makes a loud fan noise when it is exposed to direct sunlight in warm conditions (>25° C) when A/C is on. It is very loud from the outside, unusual for a car. During driving, it is not a problem for me inside the car, but the environment is exposed to a noise louder than that of a gasoline car, which is a bit unexpected for an EV. When cabin overheat protection is on, the fan switches on automatically every time the car is parked in direct sunlight after some time. The fan is also very loud in this condition, making so much noise that my neigbors are disturbed. That's why I switched off the overheat protection. Are you experiencing the same problem with the loud fan?