Here is the service bulletin:


Hope if helps!

 

Thanks gotbmw.

I didnt realize until I read the service bulletin that my car does have this noise as well! But I am really concerned about my initial complaint posted here. Seems like it has something to do with the engine and the dealer is just avoiding to do something about it. I am briefly posting the problem here again, in case anyone had the same problem and were successful in resolving it.

Strange humming, motor-like, annoying noise during deceleration on a certain speed range (between 65 kph to 55 kph, say between 40 to 30 miles). In the same speed range, the noise immediately stops by slightly pressing on accelerator or shifting to Neutral.

The dealer initially blamed the tires; later they said it may be due to downshifting gears and therefore it is normal. Regardless of the reason, I feel that a noise that has come up in only last 3 months of the 10 months of ownership must mean something is wrong. It is not normal as it was not there before. Dealer even went as far as saying that they tested other cars and they all make the same noise.

Can folks with 530i comment if they hear a similar noise (which would be far more noticable with stereo radio muted and a/c on low).

Thanks