As everybody know we don't have good road's in Poland. After 1500km I start hearing knocking noise from door lock during driving on roads which are not so strait . In service they have 5 cars with same problem the were traying to make more tight door lock but It didnt help. Then I read on DE forum that I shuold spray door lock with Sylicon lubricant and it helps for few days, but now again I have same problem. Nobody In my servic know how to solve this problem. If anyone know something how to repaire itd please let me know.
