2002 BMW X5 fan noise

2002 BMW X5
63,000 MILES • 6 CYL • AWD • AUTOMATIC
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BECKS9040
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  • 1 POST
there seems to be a fan running noise behind the main heater controls when car is off is this normal for ventilation and if so is it draining the battery I just had the blower sensor replaced this noise disappears when car is running
Dec 31, 2009 at 11:16 AM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
I am concerned about the fan noise, it may be due to a failed or failing final stage unit. A key off draw test might be the next thing to do.
Jan 1, 2010 at 9:14 AM
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