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Blower motor perfomance

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Old 01-18-16, 07:06 PM   #1
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Default Blower motor perfomance

MY '08 IS250 blower motor doesn't have a lot of flow on high setting except when set to defrost (windshield only). When on defrost it seems like it is on a higher setting. It changes speeds from low to high on any mode but definitely changes to a higher speed on defrost. Is this normal?
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Old 01-18-16, 07:12 PM   #2
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My 07 is350 does the same. I questioned it at first but after checking that the defrost still blows hard assumed it was normal and intentional for noise reasons or something like that.
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