How do you replace the plastic wing mirror cover on vw B7 Passat?

SOURCE: VW indicator unit on wing mirror

Ok very carefully pull off the mirrior blade. The mirrior blade is clipped but EXTEMELY fragile and will break if forced. From there remove the 2 heated blade wires. The cover is also clipped as you will notice after that is removed. You have to pry with a plastic tip between the cover and hosing near the body of the car while pulling the clips in the housing you see to lift the cover straight up. Once this is done you'll need a t-10 torx screwdriver to remove the lower portion. These screws are when you're looking straight down. With this assembly off you can access the 2 other little screws holding the flasher to the bottom cover. Remove the wires and the little clip and there you go. Installation is reverse.

SOURCE: how to remove and repalce vw golf wing mirror

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you can remove the bolts securing the mirror to the door.

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changing bulb on door mirror 06 vw passat