The outside power mirror control is located on the driver's door.
If you reach the mirror's end of the travel position in any direction, the mirror will enter a ratcheting mode. This action is harmless. It is a warning that the mirror can go no further. To stop this action, back the mirror up by moving the control in the opposite direction.
Fold the mirror in manually before entering a car wash. To do this, pull the mirror in toward the vehicle. Push the mirror back out when finished.