Today I was with my 630 he (BJ 2009, 65,000 KM) at the gearbox specialist. He listened to the car on stage and found that the differential is defective (probably bearing damage). Obviously my 6 he does not get the driving profile : 4 – 6 times a year longer distances (each 300 – 600 km at a time) 10 – 20 times a month short distance (5 – 25 km at a time) Fortunately it is the differential and not the manual transmission. come back.