I have never once had the radar system malfunction on my cars!
Never a problem with the ABS, traction control, tire pressure monitors, back up cameras, or automatic locking system.
Back in the days when we were still dating, we drove on a summer vacation to Colorado one July. We spent two nights in Ouray, CO. One day we rented a brand new, 5 miles on it, Jeep CJ to go up to Cinnamon Pass. It was a lot of fun. At one spot there was still snow on the ground and I put the Jeep into 4 wheel drive, and one tire was spinning we did not move. It did not have a locking diff, or limited slip. So 4 wheel drive was one wheel drive. I managed to get us unstuck with some rocking and we finished up the tip. My soon to be wife later said she had already started writing the story for Reader's digest of how we were trapped in the mountains with a book of matches, and just the the lunch we had packed for the day.....