I picked up a CHEAP IS350 last week to use as a 'beater' car after my CT-F Sport was smashed up by a lady who ran a red light. The power passenger seat will move forward, but NOT backward, which is awkward for my passengers. Every other function on the seat works properly (ventilated seats, cushion up/down/forward, back of the seat has full mobility, etc.). I'm assuming its the seat motor itself? Does anyone know if there are separate motors to operate the bottom of the seat forward and backward? If so, a part # or diagram would be SUPER helpful. I have a spare seat for parts, I just need to know which part to switch out. THANKS!

2007 IS350
Smoky Granite
Premium
Navigation
Mark Levinson
Ventilated Seats
HIDs

 

Turns out it was the switch! It also turns out that they're not interchangeable from left to right .

 

Two and a half hrs and you answered your own question. Good work!

 

Plus he came back and updated his thread with how he fixed it -- great for when others experiencing the same symptom in the future search for answers here.