Hi, my collision avoidance works sporadically. Sometimes I'll be far away from another vehicle and it'll go off, sometimes it wont go off as I'm getting close to another vehicle. I have the same issue as you.

They'll need to fix it for you still. its something that still doesn't work on my truck, but I haven't prioritized it to take it back in. Didn't have my truck for a whole month last time I took it, so I'm not too eager to take it back. If you have the time and they were efficient, take it back and let them know. It sucks that we pay so much for these trucks, add a small level and tires, and half the features don't work.