$1200 seems high even for a dealership, strange both of them failed. Mine only has a lumbar on the driver and the part was around $300. I'm unaware of where you can buy the exact internal motor and if you could find one, you'd have to successfully remove and install the worm gear IF the new motor has a keyed shaft.
This one looks close, but it's not exact so I doubt it would work. I'd be interested in who made the motor Toyota used though...
http://www.mabuchi-motor.co.jp/cgi-bin/catalog/e_catalog.cgi?CAT_ID=sz_286wa
This one looks close, but it's not exact so I doubt it would work. I'd be interested in who made the motor Toyota used though...
http://www.mabuchi-motor.co.jp/cgi-bin/catalog/e_catalog.cgi?CAT_ID=sz_286wa