There should be a U shaped hose that is for venting. It probably fell off and it sitting on top of the engine encapsulation panel under your engine.

I believe the bolts are 8mm to lower it, try just the front to get your hand in there.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)