Make sure you have the correct glass, there are heated and electrochromatic versions in some later models. Check if your mirror is 6, 10 or 12 pin by looking at the connection inside the tweeter housing on the window frame interior. If it is a 12 pin then you are in for a tidy sum. Try 2nd hand parts dealers for one, they are excrutiatingly expensive from LR dealer. I've just got a complete unit in same color as car plus a window regulator and motor for less than the cost of the glass new. I'm not changing the glass but the whole unit, someone made a bad job of aerosol paint on the cover and it's now horrible.
I think the glass only change should be fairly simple, by carefully taking out the old one and don't break the sticky out black plastic guides that are attached to the back of the mirror glass, they are important and quite fragile if you are heavy-handed with the procedure. Keep the old ones from the old mirror just in case. They jut clip into the recesses behind the glass.
Tim
August 2011
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