The Subaru Outback's complex power mirror and door panel construction makes it a replacement project for an experienced do-it-yourself vehicle owner. However, the project only requires a few basic tools for all model years.
Disconnect the negative battery cable before you take off the Outback's front door trim panel. Remove all screws and clips using a door trim tool you buy at an auto repair shop.
Detach the mirror's electrical wire connector located under the door panel near the interior mirror casing.
Take off the interior mirror cover by prying it off by hand or with a blunt tool covered in cloth to protect your interior case. Remove three nuts and bolts from the power mirror.
Pull off the outside rear view mirror. Guide the power wire through the hole in the door.
Replace the old mirror. Put the new power mirror in place. Push the new wiring through the hole in the door.
Install and tighten the three retaining nuts in reverse order.
Connect the power mirror wiring to the connection located on the door panel, and replace the mirror cover.
Put the front door trim panel back in place by securing all clips and tightening all screws.
Connect the Subaru Outback's battery cable to restore the power.