The OP hasn't been on here for over 3 years, so I doubt you'll get a response. Suggest you use the search function, as this situation is regularly discussed.
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Might be the switch, or the motor or might be mechanical. What does it do when you hit the switch? Any click to indicate the switch is doing anything? I believe the driver switch will plug into that side so you can check if that’s the problem. Otherwise you’ll need to remove the seat and inspect the motor and screw mechanism.The tilt on my passenger side seat is stuck, the seat moved forward and back and the seat warmers work, any suggestions???