R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

No Cabin air

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Old 01-08-2020, 07:36 AM
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GL320 / R350
No Cabin air

Good morning all. My 2010 R350 would not blow any air this morning. Hot or cold. No MIL light or messages, the AAC panel acts normally and there is no indication of any trouble. However no air comes from any vents on any setting. It was an extremely cold drive to work this morning. Does anyone have any ideas?

Thanks
Old 01-08-2020, 03:09 PM
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2007 Gl450 2006 cls55
Check the condition of the cabin filters if they get too dirty they restrict the flow of air entering the cabin also will hold condensation and will freeze solid in cold climates
Old 01-08-2020, 09:04 PM
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2005 C240 2011 R350
did it work in the end? Please provide a more detailed description of the problem "doesn't work" is rather vague.

no air will blow in auto mode if you have temp set at 70F and the engine is at 30F until it warms up.
it will blow in the defrost full windshield setting.
Old 01-09-2020, 07:27 AM
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efauzner,
Thanks for taking the time to write. I have decided that it is the blower regulator and am looking for a local replacement (not the dealer. they want 850 bones!)
But, to answer your question, the fan does not operate at all under any conditions whatsoever. I am going to measure voltage tonight when I get home but for now, I am GL'ing.

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