The collision avoidance system quit working. The warning light was displayed on the instrument cluster but no other warnings were sounded. After taking it to the dealer for repairs, they got the light to go out by downloading another software version, but it did not fix the problem. It only removed the light. The truck still would not give a warning when approaching another vehicle too fast or get too close at certain speeds. The dealer has kept it so far a total of 12 days and have yet to fix the problem.