My seats inflate when I start the car but about 5-10 min. later they deflate. Has anyone else had this problem

I have not experienced that issue. Mine inflate after about 90 seconds, then stay right where I want them.

Do you have an extended warranty?

did not purchase it yet. Right now it's at the place that I purchased it, I'm waiting for the 3mo. waranty to expire. Afther that I'll pick up the real waranty