Try turning ignition back a hair after start, or wiggle key a bit. My fan does not work after startup unless I touch the key to move it back a frog hair. Then it works, mine is in need of a new electronic portion of my ignition switch. But alas it works so I have been lazy to replace it. Only like a $25 part. But try that first and lets see if that is the issue or something else.

Note: This is all that gets affected by this electronic portion starting to go bad. Mine basically the key does not spring back all the way to run position after letting go of the key after start, so I have to manually move it that extra mm or 2....

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....