2002 BMW 330 Internal fan continues to run when ignition is

2002 BMW 330
61,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MATT GARRATT
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Hi - I have a BMW 330 sport, 2002 and when I turn the ignition off the internal fan continues to blow and as a result it flattened the battery last week. If I remove the blower 40amp fuse this turns the fan off but I would like to get the problem sorted properly. Can anyone assist me please or know if this is a common fault?

With thanks

Matt
Aug 4, 2010 at 6:34 AM
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DOCHAGERTY
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  • ASE Certified Mechanic
Yes Matt, it is a common fault, the final stage unit that controls the fan is a potted semi-conductor device that fails all the time.
Aug 4, 2010 at 8:44 AM
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