This seems to be a weak point with early-2000s Volvos, judging by the second-hand parts I see on eBay.
The window rocker switches on mine are cracking and disintegrating. I can’t seem to find them as a part in their own right, only as part of the whole switch module. They’re easy to remove, so I’m guessing they must be available, but I can’t find them anywhere, even using the two numbers on their inside:
97204
PA6GF30
Does anyone know if these can be ordered, and if so where?