Mice...

LOL! Yeah, I wonder how many you got that just needed a simple wiring fix for plug wires, sensor wires or the like. I watched customers dump thousands into their cars for wiring and hvac repairs from this, I would try to help them out any time I could - I even had a guy buy a new hvac housing for an almost new Honda Civic because there had been a nest in the hvac fan - we had cleaned everything out and fixed what needed fixed, and he insisted on buying a whole new assembly for it because he was so disgusted.
For me, by far the easiest to fix, wiring issues. Those things get into everything! Got a 2013 Dart Rt with blue, black int. 5k on the clock, insurance company totaled it because of mice problems, chewed the underhood harness, and other things. Long story short, I made 6k on that car!