this hose does not seem to serve the purpose of venting hydrogen out of the battery housing....the hose seems to lead INTO the battery housing from somewhere in the rear of the cabin...I see it exiting from the same place as the positive terminal...I see a hole near the hose though in the chassis...next to the vents that are covered by the side of the rear bumper...the rubber hose is around the same diameter, and the hose is cut slanted...basically, I dunno where the hose is coming from...and where it should connect to in the battery well...I assume that hole...but I do not know its purpose...it is it just suppose to hang loose in the battery well area to serve as venting, I wonder where the exit is...I tried to pry at the carpeting to get a better look, but kinda difficult...

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1995 black pearl/black Mercedes-Benz E420 :