When is in motion on any type of street and also at a stop, when getting close to a vehicle or if someone cuts in front of me, or if there is a street sign directly in front of the car, this message appears very briefly "unavailable front radar obstruction" which also shows the icon of two front end of cars colliding. this happened immediately after puchasing my 2018 maxima. the dealership has not said a word about being aware of this problem when it is a known problem with certain nissan vehicles. the cost to bring it into the dealership and for any repairs at this point would be out of my pocket since the car is no longer under warranty. this faulty radar compromises the emergency braking system in the car.