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Old 06-26-2003, 12:13 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,118
I believe it switches from recirculate to vent without turning on the blower motor. I have a W126 manual AC switch set and noticed that the vacuum lines are blocked in 0 and open in the intermediate position and the numbered positions.

Manual AC - how I envy you.

95 S420
91 300SE
87 300SDL
83 300SD
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