I have a 2000 ML320 and when it rains water runs down the passenger side drain " SKYLIGHT ROOF" onto the fuse panel and onto the front passenger side floor. Is there a way to fix the problem. Please help all wet in Ohio.

The drain tube may have been blocked/clogged. If you take the A-pillar cover away, you will see the drain tube, you can trace it all the way up to the roof liner where the sunroof drain begins. get a long skinner wire to unclog it.

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98 ML320 (gone but not forgotten)