Same happened to my 2005 Elantra GT, but the drivers side. The whole mirror unit holder fell out. On the back was some sort of wavy tan thick adhesive that had lines in it like if you were attaching floor tiles. What type of adhesive do I use to reattach it?
Don, August 2022
https://m.youtube.com/watch?v=qZPGWUhF0L8
Plenty of OEM and third party replacements available. Just use your search engine of choice