I need some help here with this Adaptive Cruise Control. When driving and trying to use my Cruise Control the dash indicates ACC BLOCKED. Audi wants lots to repair the problem in realigning it and out of adjustment. They also indicated that i have scratches on the front of the Dopler which is like a round glass ball. Is this something i can fix myself? I took the front plate off and i do see the scratches but i would not think that would cause the issue with having a plastic piece in covering it. Do i have to remove the whole bumper? Any help would be great. Thank you.

you definatily have to take the bumper off to repair or replace the magic ball.

you definatily have to take the bumper off to repair or replace the magic ball.

Does the scracthes affect anything on the ball?