What are some of the bmw e46 330d auto gearbox problems?

The automatic gearbox of the BMW E46 330D is known as relatively reliable, so there aren't many problems to speak of. However, from time to time, drivers may experience some routine issues which can interfere with normal operation of the gearbox. I'll try to briefly detail a few of those problems. Occasionally, You'll experience a slight revving on a level or downhill run, as if the transmission has shifted. It's almost as if the gearbox has gone into neutral, without the throttle accompanying the change. It's recommended that if You encounter this, You first change the automatic transmission fluid and filter. Check Your electrics, and if the problem persists, You should have the vehicle looked at by a professional technician.