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#1
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No Defrost or Footwell Heat, Dash vents fine
So this morning I took a few extra minutes to try some things before leaving the driveway. What I discovered is that, while the dash vents and the rear vents are working just fine, the defrost and floor vents are not blowing air. I usually just leave things set to Auto and 70º. This wasn't doing it last night, so I hit the Frost Annihilator button. The fan ramped up to max like it should, but the cabin didn't get nuclear hot and the window continued to ice over. This morning I played around with the different manual settings and discovered that no air was coming from either the Defrost vents or the Floor vents. Is this a problem with ye olde flaps not opening & closing? RealOEM.com * BMW E53 X5 4.8is ACTUATOR FOR AUTOMATIC AIR CONDITION Or is it a problem with whatever tells them to open & close? Is that the FSR? Thanks in advance.
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#2
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Symptoms don't sound like FSR. Usually the fan is indication of bad FSR--cannot control fan speed. Fan might even run when ignition is off. It could be the blend door actuator.
When there is a problem with the system it should default to only heat from the defrost. First thing I would do is check coolant level if you haven't already done so. If the coolant level is fine I would run a diagnosis to check for errors that might narrow it down. I wouldn't start buying parts yet. there is more troubleshooting to do.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#3
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Cool, thanks for the post. Digging DEEP into the archives and finding a whole bunch of FSR replacements and not many other confirmed solutions.
Things on my list so far: Blend Doors Coolant Cabin Filters Heater Control Valve
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#4
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I had the complete opposite of you. The stratified air dial on the dash was bound due to the white piece at the end of the bowden cable being off track. I pulled the glove box out along with some footwell vents and could access it fine.
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2003 X5 4.6is, Estoril Blue |
#5
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Yeah, I've seen other reports of the problem with the stratified dial. That seems to function perfectly. It just seems as if the vents to the defrost and footwell are stuck shut. I can feel warmth above the dash, but no real blowing to speak of. Can't really feel anything down by my feet.
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#6
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Interesting development. Got in the X yesterday afternoon and the blowers all worked just fine. This morning they all worked fine.
None seem to be getting as hot as they should, however.
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#7
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Have you checked coolant level?
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#8
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Quote:
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I love this forum!!!! Alan 1999 BMW 328i sedan with auto...In progress... 2002 BMW X5 3.0i with auto...In progress... 2007 BMW Z4 3.0i 6 speed manual...In progress... |
#9
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What's regularly? I have not touched mine with 114,000 miles on the clock. How much air is getting to the floor depends on the setting you are using. There is a rotary dial on the rear seat control, if it is wide open there should be noticeable air flow depending on fan speed setting.
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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior Dallas |
#10
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Quote:
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I love this forum!!!! Alan 1999 BMW 328i sedan with auto...In progress... 2002 BMW X5 3.0i with auto...In progress... 2007 BMW Z4 3.0i 6 speed manual...In progress... |
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