Rick,
I think the exterior mirror just comes apart, I know on the 129(SL) pre-1999, you use a plastic wedge and just go down the ridge in the middle and it comes apart. You will then be albe to re-attach the springs that hold it to the car. The interior mirror is very expensive, I have repaired both mine in my S and SL, you just have to remove the mirror, I actually used hot glue to put the one back together on my S. I don't knwo how much they are for the E, but the S they cost over $400, so I figured out a way to fix it. Good luck!
Brian

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Brian W. Heitman

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