hello, have the following problem with my automatic, 99er tdi 250000km. and the gearbox switches fine, soft, good and drives well. only the motor brake effect is zero – that wouldn’t be the problem at all, the problem is rather, if the car obviously tries to intervene in motor brake technology, it jerks quite violently. especially when driving downhill and inserted “L”, where the braking effect should be quite high, it jerks strongly, and the braking effect is zero. who can help ? gruß uwe