This was done on a MY2012 GLI. Your vehicle may be slightly different.
t10 torx bit screw driver
small electronics flat head screwdriver
Estimated time to completion:
10 minutes per cap
First push back the mirror to give yourself more room to work with.
From there, you're going to use your fingers to pry the mirror free. Just be gentle and work your hands around the mirror and you'll get it.
Once out, be careful of the two connecting wires to the mirror (this might only be on vehicles with a heated mirror option).
These two cables slide right off so you can place the mirror on the ground.
Get your torx screwdriver and get these two screws. These are the only screws you'll have to remove.
There are two tabs here that need to be released to get the inside assembly out.
I used a small flathead screwdriver to depress the tabs and pull them out.
This is what the tabs look like from the rear.
Once the tabs are free, use your fingers to pull forward at this spot. The inner assembly should come out. Be mindful of the small, clear plastic blinker light on the inside of the assembly. If you pull too hard or pull when the tabs are not out, you could break it.
The cap should be a bit loose now.
Slide it forward and it will come free.
This is the mirror cap from the rear.
Repeat the steps in reverse order to get everything reinstalled.