Mine only comes on while I'm on a long straight stretch of road.....
If it's the brushes, do you know what partnumbers I need to replace?
1995 E320 - 115kmi+ Smoke Silver/Cream (Wife's Wagon)
1989 260E - 195kmi+ Black/Grey (My Panther)
1984 300D - 242kmi+ Black/Palomino (Retired)