Bailey86

Hey, Ive got a 2011 Edge Limited with 88,887km - Ive been getting kickback on the brake pedal and ABS when braking on dry, clear pavement - it doesnt happen every time but enough to make me go Hmmm Ive noticed it happens below 20kmh - I took it into Ford and they replaced the brake booster and said that was the cause but not two days later it was back - any ideas/suggestions? Thanks!