Usual culprit is the FSU. I just had to replace mine. Did you have any symptoms before total failure? Eg my fan would cut out occasionally before it died.

Foxwell can command the blower on so test that. If foxwell can turn on the blower the problem can be in the controller etc.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)