HI all, i'm new to this forum and to diesel trucks. I am very proud to own my dream truck 2008 F250 King Ranch crew cab 4x4. Pulls my 33' travel trailer like it's not pulling anything at all! Anyways I'm having a problem w/ the mirrors, they both readjust, go all the way down when the left turn signal is on. Most of the time I can use the switch to change them but as soon as you use the turn signal left it does it again. Any thoughts on fixing it will be greatly appreciated.

 

The mirrors are still acting up, not so much w/ the turn signal. now they are not fully adjusting or won't move at all. power fold and telescop still work. Must be the switch, will replace and see what happens. if not the switchit must be a bad ground.

 

I concur, I would look at all the wiring. Maybe some moisture got in there since the switch is ont he door.

I can't recall anyone else having this concern.

 

Replaced switch, same issue. Now my telescopicing quit and so did my garage door opener built into the visor. Frustrating. took apart switches and found no ,oisyure or corosion.