For anyone having problems with the dreaded interior mirror glass coming un stuck on the manual dimming type or wants to upgrade to an auto dimming one & have discovered that you can't upgrade via Volvo, then this is worth considering. I was gutted when I purchased my V40 CC last year that the previous owner hadn't upgraded the mirror to the factory auto dimming & the glass had previously been glued back on, as my previous 3 cars had had it fitted & I was missing it. I tried fitting a factory mirror found on ebay which didn't work, even when I fitted a homemade loom to wire it directly to a accessory fuse behind the glove box. The loom did work as I tried it on old Ford mirror that I knew worked. I then found this on Aliexpress.
https://www.aliexpress.com/snapshot/...Id=32315331108
You just need to ask for special bracket #65 suitable for the V40. Dead easy to fit, just 2 wires, 1 earth & a fused power lead that I hooked up to the glovebox fusebox & switches on & off with ignition or with its own switch if you wish.