So my ABS and "trac off" lights came on the other day when I started up my stang...haven't turned off since. So I had a guy at work hook it up to an OBDII tester and it threw out a code saying my rear driver-side sensor wasn't functioning properly. We went through all the trouble shooting guides for it until the point where it said I should just replace the sensor and/or ring. My question is has anybody had to do this? Should I try it myself or just take it to a Ford dealership? Any advice or guidance would be helpful. 

I made sure I fixed that problem when I put the new ones back in though. Next time they come out it will me much easier and they won't be destroyed.
Glad to know I wasn't the only one who had problems getting these things out....