according to ADS, my unit was the first one with ultrasonic transducer failure. I do find that hard to believe now. If your utrasonics are dead, it has to go back to Germany. Ultra Systems is not equipped to make that sort of repair. It's a two month process to get it back. Ultra Systems did offer me a loaner unit, which is a nice service. I declined it as I wouldn't use it any way when I have the KL hanging around. I plan to sell my ADS once it is back. The warranty will expire this coming August.
Unload it quick while it still has some warranty left! The new owner will probably need it.