I am having problems at the moment with the above-mentioned. When i select reverse, the warning tone immediately activates while stationary. This tone is continual as if you have come up close to an object. It happens about 40% of the time now and i am threaders with it. When i took it into Audi, what happened - it worked perfectly. They obviously cannot detect a problem when it's working - but i also cannot take it in every time it goes off it as it can happen anywhere at any time. Any help would be appreciated.