Rear Power Window LH does not Operate with Rear Power Window Switch LH: Description
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
If the manual UP/DOWN function does not operate, there may be a malfunction in the rear power window regulator switch, power window rear regulator motor LH or harness or connector