I have a 2023 Lincoln Navigator, when driving I continually get audible warnings and nothing will appear on the screen to say what is wrong. Then occasionally the pre-collision light will flicker and occasionally it will display say ”Pre-Collision Assist Not Active.” Also, cruise control will suddenly disengage with light on dash stating "cancelled". I brought the vehicle in last week and spent $1700 on it. It worked for one week and now is having the same exact problems. According to mechanic’s bill, they “installed a known good CCM from a like unit and performed PMI programming.” Any suggestions, the Audible warnings go off constantly and it is driving me literally nuts.