Lima valeo carbon change

Hello together, I’m new here and need help, since I made it with my omega this morning just up to work. display for lima goes on, about 1km driving goes out again for about 3km and again. after working the display is all the time even after 10km, I stopped a little on the lima knocked with a tool. motor to the show went off. and so I drove home about 15km without anything. omaga: 2,5 dti bj2002 lima: valeo I think 150A or? question can I buy the carbon brushes somewhere?? carbon brushes replaceable at valeo lima??? best resist a link, depend on the car otherwise I would expand and buy according to patterns! therefore I ask here for help if someone could write me what kind of a I need / mm length and width etc. thank you in advance lg mirzetbde