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      01-12-2021, 09:09 AM   #2
Asianoak
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Drives: '11 E92 M3 & "11 X3
Join Date: Jun 2013
Location: Southern Oregon

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2011 M3  [0.00]
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I had the same issue, all heated seats stopped working except driver's side but the buttons still lit up. Then a couple weeks ago the GF tried them after I said they'd been broken for years and bam... they worked. I'd originally assumed the module was bad but perhaps it's one of the systems the ecu cute power to when low voltage is detected?
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