NotFiona
Member
This seems to be a common problem on many Mercedes models from the early 2000s. The little plastic clips break and the mirror covers fall off. There are a few repair methods online but they seem to rely too much on glue and hope. The original plastic pin is about 3mm diameter and 3mm long. I fixed it by drilling a 2.5mm hole, tapping it out to 3mm and then using a 3mm (M3) grub screw that was 10mm long. That method allowed me to adjust it to the right length but length is actually not that critical - and you could instead drill a 3mm hole and hold the grubscrew in with superglue. The key is the grubscrew, (available for pennies on ebay) it's almost identical size and shape to the original plastic.