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The BMW Range
5 Series
E39
Air roar when switching between air recirculation modes
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<blockquote data-quote="moots" data-source="post: 401940" data-attributes="member: 219"><p>in the e39,whenever the a/c is switced on,the default mode is vent ie. the recirc light on the a/c panel does not light up.when recirc button on the mf steering or on the a/c panel is pressed only will the recirc mode engage.</p><p>vent mode - 50/50 air from outside and interior </p><p>recirc - valve closes and air inside cabin is reciruculated</p><p> </p><p>if you have lo air flow in vent mode,then most likely your microfilter is clogged.easy to confirm.remove the filters and test,(filters located in the engine bay near bulkhead on the lh n rh side)</p></blockquote><p></p>
[QUOTE="moots, post: 401940, member: 219"] in the e39,whenever the a/c is switced on,the default mode is vent ie. the recirc light on the a/c panel does not light up.when recirc button on the mf steering or on the a/c panel is pressed only will the recirc mode engage. vent mode - 50/50 air from outside and interior recirc - valve closes and air inside cabin is reciruculated if you have lo air flow in vent mode,then most likely your microfilter is clogged.easy to confirm.remove the filters and test,(filters located in the engine bay near bulkhead on the lh n rh side) [/QUOTE]
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The BMW Range
5 Series
E39
Air roar when switching between air recirculation modes
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