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      01-04-2013, 12:38 PM   #3
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Drives: 13 335i Sedan, 11 128i Cabrio
Join Date: Apr 2010
Location: Leland, NC

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It's the regulator that's part of the fan unit - it sits up under the dash behind the glovebox area. You can get a new one for about $160 from and it includes the regulator plus the fan assembly itself.

2013 F30 335i M-Sport 8AT/MPE/MPPK, 2011 128i M-sport Cabrio 6MT/PE
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