2015 jeep cherokee. consumer writes in regards to vehicle collision braking system problems. *smd the consumer stated two weeks ago, the lane sensor and collision avoidance system turned off as indicated by the red light being on the options button. a message came on that said acc fcw was inactive and to clean the front radar sensor. he wiped and cleaned the sensor. however, that did not stop the message from constantly coming on. the dealer was unable to replicate the problem. the consumer stated even though the collision braking system was turned off, it was acting as though something was behind him and therefore the brakes engaged causing the vehicle to stop. *jb