My ABS light has started comming on and off it started on new years day, and now it stays on all the time ~ .I had it checked yesterday on a vagcom at the dealers and it pointed out the OSR sensor faulty. has anbody changed thease before by themselves?if so how difficult is it, and have you got any tips The next question is that do i need to remove the whole rear calliper and brake disc to get access to it &| (i hope not!! taken that caliper off before when i changed the disc and bearings and it was a rite pain in the arse.) and does the cable that comes off the sensor go under the re