cling noise???

[ottos]

sometime when I pick up my 13 '' mbp I hear a cling or a ping noise
it seems to come from the hard drive area , it only happens when the
it is on and when I pick it up or I move it around on my lap, the optical
drive is not being used either , it runs great , maybe I am being
paranoid but it has done this since new and that is only 4 weeks,
anyone else experienced this?

 

[moel]

tilt it violently left or right

See if it does the same noise.

If so it's the Sudden Motion Sensor, parking the heads on the hard drive.

 

[preppy]

https://forums.macrumors.com/threads/1064360/

Check this thread. It might be what you're hearing...