320d traction control, abs and runflat

Hi



I've looked on the threads and can't find any clear answers for my problem, so wondering if anyone has any new answers.



Bought car from Scotland and on way driving home the three lights came on the dash, the abs, hand brake and run flat tyres. Then got home, turned car off and back on and they were off, but car would judder as though traction control/abs wasn't right. After about 10 mile the three lights would come on again. Hooked it up to diagnostic machine and said abs rear left abs sensor, changed that, only different is now all the lights are on from starting the car. Diagnostic tool now says reluctor ring.



Could this be correct? If so, do you need to buy the ring seperately or a new hub?



Thanks