Do you need to bleed brakes when changing ABS brakes?
Yes you need to bleed the brakes even in a ABS system. Bleeding the brakes should always begin with the wheel that is furthest away from the brake booster which is usually the rear right (passenger) side. Next bleed the other rear brake, continue with the front right and lastly the drivers side front brake.
YOU ONLY BLEED BRAKES WHEN YOU DISCONECT ANY BRAKE LINES OR HOSES OR IF YOU CHANGING YOUR ENTIRE FLUID. IF YOU JUST CHANGE PADS AND OR SHOES YOU DO NOT NEED TO BLEED IT. JUST MAKE SURE THAT WHEN YOU PUSH THE PISTON BACK ON YOUR CALIPERS, THE RESERVOIR CAP MUST BE OFF TO AVOID DAMAGING ANY COMPONENTS.