DSC Failed after control arm bushings replaced
 

2007 R56 base not S. I replaced the front control arm bushings, front and rear sway bar bushings. When I backed it out of the garage and turned hard left the DSC failed light came on. I pulled it back in the garage and checked to see if there was anything I missed. NO. Started it up no DSC failed light, backed out and turned again and DSC failed came on again and stays on. As I've been checking to see if I could find a problem. The bake pad worn indicator now is on. They both now stay on even if I disconnect the battery and clear it out. Car is up in the air with no wheels and now I have a P0503 Vehicle speed sensor. I've checked the fuses, brake pads & sensors, the ABS sensors all seem to be okay. Any ideas?