Where is the passenger occupancy sensor?

I’ve read that it’s integrated into the cushion that your butt sits on? Are there any other parts besides the seat cushion that have to be ordered?

2016 CX-9 Signature
 
It is indeed integrated into the seat cushion (what your butt sits on). I recently had mine replaced by Mazda at no charge as the sensor was faulty (frequently setting off the seatbelt warning alarm when no one was sitting on it).
 
It is indeed integrated into the seat cushion (what your butt sits on). I recently had mine replaced by Mazda at no charge as the sensor was faulty (frequently setting off the seatbelt warning alarm when no one was sitting on it).
was this no charge because you had extended warranty?
 
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