WTF Is That Noise...The Motor's Off And I'm Not Moving?? My 3 is Haunted...

[HUMTECH]

Best guess, just what desert dan said, the abs system runs self diagnostics which are quite audible(apparently) have not heard it myself. Also not sure if they will run in a key off situation. If i come across anything tomorrow i will pass it on to ya. I checked for service bulletins and pi's and found nothing. May want to check for any chassis dtc's.