2013 ES350 driver side mirror cannot be moved electronically. Initially, the mirror stopped responding to the preset control and dash control but would shift downward while in reverse intermittently. After a couple of weeks, it stopped moving when in reverse. The passenger side mirror works in all cases. It was diagnosed a a controller (i.e., computer) problem. I'm having trouble reconciling that diagnoses with the fact that it worked intermittently for a while. I've never known computers to work occasionally. It seems to me it is more likely a connection problem. Thoughts?
