2012 LS AWD - 120k miles in upstate Rochester, New York (Harsh winters with SALT!) Recently, had an error with ABS off / Stabilitrak disabled / AWD off. Took the vehicle to someone to scan the code - Left Rear Speed sensor fault. Installed new wheel speed sensor - code still exists. Root cause was determined to be the magnetic ring that is part of the wheel bearing was gone! It deteriorated and broke off. Bought new wheel bearing and started the replacement. After 8 years of winter salt - the CV Axle was FUSED to the bearing. Had to remove the entire knuckle assembly including the axle. Used a torch heat and remove the bearing, backing plate, brake shield from knuckle and the CV Axle. Reinstalled knuckle assembly, new bearing, new CV axle, reset the codes and the problem is corrected. Question is when will the other 3 bearing mag rings fail? RocAuto.com was used for parts. Great Prices and reasonable shipping.