My E60 emits intermittent soft tattering noise either while stationary or traveling on road/highway. I am confident the noise comes from the driver seat head rest. However the noise disappears when I rest my head or exerting some force on the head rest.
I have sent the car to PML for investigation but the headrest noise mysteriously disappears while at the workshop. Nevertheless, the technician claimed they have added some tape around the door (or panels), a measure to eliminate a typical rear door noise problems.
Does anyone encounter similar problems? Advise please?
I have made a subject search in this forum but the usual noise problems are from the rear door.

I have sent the car to PML for investigation but the headrest noise mysteriously disappears while at the workshop. Nevertheless, the technician claimed they have added some tape around the door (or panels), a measure to eliminate a typical rear door noise problems.
Does anyone encounter similar problems? Advise please?
I have made a subject search in this forum but the usual noise problems are from the rear door.