Please help with my seat problem

[moymch]

Does anyone else have a problem with their X3 driver’s seat making a popping sound? (Mine is a 2006) I just can’t figure out where the noise is coming from. The sound is sporadic and I can never seem to replicate the noise on demand. When I accelerate or turn either direction, causing a weight shift I hear a popping sound that comes from the back of the seat.

The dealer has taken the seat out twice looking for a problem and can’t find one. Is there anything in the back of the seat that could come loose? It almost sounds like something is loose between the back seat cushion and the plastic cover. Any ideas??

This is driving me freaking nuts! My 2 year warranty is up in October so I need to ensure it gets fixed under warranty. Please help.