Do I have to take the whole door trim off before I can access wing mirror panel to replace side wing mirror
Most likely the door panel has to come off.
Here is a video I found for you. Nissan usually keeps things simple. See if this matches w your door and inside plastic molding https://www.youtube.com/watch?v=NcCnbsultaI
there is about 15 or so videos on Nissan mirror replacement steps. This is one on the Nissan Quest, where u need to take the door panel off. Most cars in Nissan line u do not Watch this one https://www.youtube.com/watch?v=hJPZgBr2sa4
Here are a pair of mirrors already off. They are available on EBay Hope this helps
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