2011 X5 noise
 

I have my X5 in the dealer for this strange sound and they still can't figure it out since it's only does it when it feels like it but I got it on video as proof since they alway come back with cNt duplicate it so come back when it does. But either way the sound is in place of that soft sound you hear when powering up or down; it sounds like a toy machine gun or jack hammer. I tried loading it on YouTube but would not let me. Hopefully some one has had similar problem.

I got a headache reading your post..

LOL me too. Dealer never figured it out.

Yes, same thing happened to me...but I was able to fix it,

Ard; do you know what the issue was or did you get a code for the fix? I'm attaching some videos. Hopefully someone can help me out since the dealer can't.

2011 X5 noise 1 - YouTube

2011 BMW X5 noise 2 - YouTube

2011 BMW X5 noise 3 - YouTube

What engine is it? Why don't you do some basic troubleshooting? At the very least, you should be able to point at a specific part of the engine or whatever area the sound comes from.

It may very well be the sound diesels ocasionally make - some process related to emissions. Or it could be airbag pump.
The video does not tell us anything..

It's a 3.5i and if I could pin point the part I wouldn't be on here asking and probably be fixed; that's why I stated at the beginning of this post when the issue arises (powering up and powering down). I'm not a mechanic but thanks any way for the pointers and giving me the opportunity to be a smart ass. :thumbup:

Had time to film 3 separate videos, but no opportunity to check what area of the vehicle the sound comes from.

I guess your expectation from this forum is for someone to detect the frequency and nature of the sound from the video, and tell you exactly what's wrong, along with part #?

Sounds like the air compressor for the suspension. Do you have active suspension?
Mine does this occaisionaly but not every time I start the X