Is it a allen wrench fix? If so what size?

 

https://www.jaguarforums.com/forum/x...mirror-102698/

https://www.jaguarforums.com/forum/x...es-off-173172/

 

depends on the problem -- many times it's the plastic case failing. The mirror and third brake light must be the same stuff -- it degrades and cracks. There is a metal ring that grips the plastic around the ball -- see if this is still tight. If not that's the problem.

My memory is the mirror snaps into the windshield holder -- no adjustment

 

The ball and socket part is broke. Epoxy was used to stop it from moving. Better than thaving to buy he new $400 mirror.