Anyone have any experience of this problem, namely in prolonged heavy rain the parking sensors in my 2011 E220 Avantgarde sound off whenever I turn the wheel at low speed or as I slow to stop when braking (after having stopped, they don't sound). OK again when everything dries out. have had this problem for the last 3 years, different Mercedes dealers offer no solutions. They have tested it at each annual service and a couple of times in between but cannot produce the problem to order even by soaking the car for two minutes with a hose. It only happens out on the road in heavy rain, the only solution is to turn off the sensors. It's not safety-critical, but it is annoying!