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#1
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? Parasitic draw 03’ X5
Found that cabin fan turns on rradomly and softly for 3 to 5 secs. I also see a .1 v draw on my mm. After sitting in the front seat, when the fan turns on, I feel air on my feet. Truck does go into sleep mode. looked for info. No luck yet. FSU? Which fuse to check? TIA |
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#2
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Almost every time happens it's the final stage unit FSU also known as the final stage resistor FSR. It was the first repair I did on my wife's X5 it's very easy to get to from the right side of the transmission hump.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#3
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Thanks
Will order a new one and replace it, I just don’t get how the fan can run with truck turned right off.... |
#4
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It was the telematic unit in my case.
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#5
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telematic?
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#6
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It's the bluetooth module. If you have factory bluetooth you have a telematic control unit(TCU). One of several common culprits for parasitic drain. The common causes are the Nav/radio, the TCU and the FSR.
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#7
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Hum... not sure that I have the Bluetooth setup. No map or any Nav system. I do have the tel buttons on the dash and steering wheel. It’s an 03 with sports package.
I looked at a fuse diagram and think fuses 7, 73 and 74 are related to the telematic (phone system?). I’ll try pulling them tomorrow. Battery is now at 11.16 V and won’t start the engine. Dropped it to 10.5V after 2 tries. Will charge again tomorrow AM and pull fuses to see. Thanks for the feedback. |
#8
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Quote:
A lot of parts on the X5 have power supplied all the time and they're operated by a pwm module that pulls to ground. When something goes haywire and that's switch doesn't open and stays closed whatever it's operates will stay on
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#9
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Unlikely to be the telematic in this case - a faulty FSR can cause the fan to run - which is happening in this case. Can't see the telematic unit causing the fan to run.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#10
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True
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