"Rattle" sound behind seat???

[Bclar]

Anyone have a "rattle" or "slapping" sound from behind the drivers seat? My CX 5 GT AWD, 2013 with 12000 miles on it just started with this noise. In particular, when I make a sharp turn . I think it might be tied into the seat belt strap mechanism but am only guessing. Any ideas???

 

[SayNoToPistons]

Check the TSB thread in the lounge. There are one or two TSB's that concerns rattles in the seat back.

 

[CX-SV]

Might be rear hatch mechanism, mine was fixed for that (per TSB), all quiet now. But not sure yours has same problem.