So awhile back I backed out of a parking space and hit a pole in the parking lot (blind spot on the backup screen)--pushed in the corner of the bumper and broke a taillight, not a big deal. Replaced the taillight myself and popped the bumper corner back out, it just had a little paint scrape. Two weeks later the Blind Spot Monitoring system stopped working (BSM light flashes). Dealer is telling me that the modules on BOTH sides of the rear need to be replaced at a cost of $2216. Can anyone please tell me there is a way I can replace this myself or otherwise do it for less than two thousand dollars? This is a 2014 6.