TC reported car front M2 Door A4 slow inclosing. Staff(DBG) checked and confirmed A4 door slow in c losing. No obstruction. ~~~~~ #2509-A4 door confirm slow in closing 4.0sec. #2509-A4 door adjusted closing and cushioning speed. Testing using Tims intermittenly A4 door 3.5 and 4.0 sec. Check door guide No F.O.D. #2509-A4 door still having issue - to further check door closing, door magnetic coil slow in activation. Done by Din/Zulq. 04/06/20. Checked and found #2509-A4 door actuator faulty, causing door slow in closing. Replaced faulty door actuator. Carried out door cyclic/function test ok. Door open timing - 2.9sec and closing - 3.1sec. Carried out 10-20mm function test-ok. #2509-A4 door actuator: Old s/n: 11.12.17  New s/n: 06.02.20. Not: 2167159 raised to RSW. Done by Koh B.S. 05/06/20.