One of my backup sensors is bad. I had the van to the dealer yesterday and after two hours, they came out to tell me that there appeared to be a scratch on the sensor and that it would NOT be covered under warranty because it was obviously from accidental damage. They tried to show me the scratch, but I couldn't see a thing. Then I was told that it would cost $250 to replace, mostly because the little trim ring piece on the replacement needed to be painted that same color as the van. So I went on the HMA site and see that it should take about 10 minutes to remove the rear bumper cover and install the new sensor. And I can get a can of touch-up paint for the trim piece. So, my question to Hyundaitech, is this really all there is to it? Does the sensor system require a reset or update when the new sensor is installed? Anything I might be missing? Also, if I decide to skip the repair completely, is there any way to disable either the bad sensor or the whole system? Thanks. Eric