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The BMW Range
5 Series
E39
Air blower noise from Air-Cond Control Panel
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<blockquote data-quote="rpmnut" data-source="post: 474576" data-attributes="member: 20757"><p>Everything on the car serves a purpose, I always say. If the car didn't need it to work properly they wouldn't have put it in...</p><p></p><p>The sampling fan draws air in from the cabin into the HVAC electronics so cabin temp can be established. Without the fan, the sensors in the HVAC unit will run warm constantly, forcing the system to over-compensate for what it thinks is high cabin temp.</p><p></p><p>Long term, this will tax your air cond compressor and increase your fuel consumption....</p></blockquote><p></p>
[QUOTE="rpmnut, post: 474576, member: 20757"] Everything on the car serves a purpose, I always say. If the car didn't need it to work properly they wouldn't have put it in... The sampling fan draws air in from the cabin into the HVAC electronics so cabin temp can be established. Without the fan, the sensors in the HVAC unit will run warm constantly, forcing the system to over-compensate for what it thinks is high cabin temp. Long term, this will tax your air cond compressor and increase your fuel consumption.... [/QUOTE]
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The BMW Range
5 Series
E39
Air blower noise from Air-Cond Control Panel
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