I had this problem with my 2008 210V. The water was coming through the latches. Confirmed it by running water on them with the compartment empty and dry. Memory is foggy on the details but I did address the seal on the latches but can't say whether I replaced them or just added some type of sealant. I think they were flat rubber gaskets on top of the lid. The other thing I did was to add grease to the voids in the rotating latch assembly to repel water. Now when I pull out the drawer after a rain, the depressions on the lid are full of water, but not a drop gets into the compartment. It's been years.
The other aspect of this set-up is the gutter, located on the body above the opening, that channels water horizontally to either end of the drawer. This gets clogged with dirt running down the body when it rains. Keeping it clear and sealing any gaps behind it, between the rivets, minimizes the amount of water reaching the top of the lid. When everything is right, the is no water collected in the lid depressions after rain. From my experience this is rare. It doesn't take much to overflow the gutter.
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