W/O Driving Position Memory System: POWER MIRROR CONTROL SYSTEM
WARNING: This page is about a different car, the 2005 Lexus GS 430 and 2005 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
This system uses the multiplex communication system, so check diagnosis system of the multiplex communication system before you proceed with troubleshooting.
Fig 1: Problem Symptom Table (Power Mirror Control System W/O Driving Position Memory System)