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post #1 of (permalink) Old 04-17-2019, 06:13 PM Thread Starter
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Vehicle: 1998 C280; 1987 560SL
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Lower Heater Box Hole - Something Missing?

I think I have encountered a problem in putting my heater box back together. My lower heater box has a hole in the center of wall facing the interior. The attached photo shows where it is (45 degrees up and left of fiber optics tree). I fear something plugs in there that I do not have - like an evaporator temperature sensor? Does anyone know what this is for, and do I need it?
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