That is too bad. We really need to know why the units are failing because they obviously work when the cars are new. Is it heat, cold, vibration, road debris impact, faulty wiring in the sensor, a bad chip, water infilittration...the list is possibly very long. Something is happening that is causing outright or intermittent failure and this should be identifiable and fixable. Very frustrating to have happen to a brand new vehicle. Just make sure everyone call Nissan to complain as well as bring to dealer.my 2017 Murano is also experiencing the front radar obstruction problem. what's scary is that when it happens it disables the cruise control. was on the highway last weekend passing another vehicle at 75 mph and it did it and disabled the cruise. A bit startling and dangerous. Dealer says Nissan is "engineering" the problem and a fix is not available. Called customer service today at Nissan and filed a case on it. They don't seem to be concerned about it, but I want it fixed! Anyone else have this issue and get if fixed? Dealer says all the 2018's are experiencing it. If that's true, then Nissan surely will do something about it.