CE: 3634 A4 door knocking noise ~~~~~ CE: 3634 A4 door knocking noise      Car 3634 A4 door having knocking noise Open Close speed pass: Y FOD found: N Door cycle 20x: Y Rubbing marks: N Door mating gap:  Ok Door Lock Switch Cushion Rubber intact: Y Door Close Switch distance from actuating plate - ok Door Wobble: Y Rectification Actions: Checked and found 3634 A4 LHS door leaf wobble more than RHS. Further check found LHS door roller out of roundness and RHS door roller ok. Replaced LHS door roller and function test ok. N.A /KUMAR/SANKAR/11.01.23