I will only allow the exterior to be cleaned through the best car wash in my area that has cleaned my BMWs, Jags, Mercedes, and Audi without issue, except for an M5 issue once with the huge tires and wheels. The folks don't know to not clean the screens, and it is just too difficult to explain driving the car into and out of the car wash. Turn off the wipers, make sure windows are up, tilt the mirrors in. If you sit in the car, just put it in neutral when the car is engaged on the trolley. I find it hard to shift into neutral. My car seems to either want to be in R or D, and it takes a very delicate touch to put the car into neutral. If it wasn't for the screens, I would let them clean the inside. It just seems the swarm of humanity all over the car all at once both in and out of the car is more than I can handle, so the exterior is what I get done.