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#1
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Climate Control Broken?
Issue: Checked out a/c and it worked great, ice cold no issues running it straight out at 60 degrees. It's FL after all. Then when the weather cooled down an attempt to raise the temp up to 76 blew four fuses in a row. Now I have hot air only. I disconnected the unit. I replaced the dual water heater valve with new one. Old one jammed up, so I figured that was the electrical issue. I connect the c.c in sections, and as soon as I connect the power source and try to change the temp, poof, blows the 7.5 amp fuse. I also cleaned the c.c. unit before connecting. What am I missing? Is this a worthless c.c unit? Oddly, the rear fan console blows with the disconnected c.c. unit and none of the dash fan/air blows. Weird. Thanks for your assistance.
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X5 3.0 AUTO -2001 - 238,000 miles |
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#2
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Are your controls manual (knobs that you rotate) or automatic (digital display)? If automatic and given the age of the car and no fan blowing symptoms - it might be a VERY good idea to replace the final stage resistor (if you have automatic controls) - use a genuine part (Best) or Behr/Valeo, anything else doesn't last.
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2002 Euro X5 (E53) 3.0 diesel (M57) 5 speed manual with UUC short shifter. Pre-xDrive NV125 transfer case (chain & gears). Factory Xenon headlights, Spyder LED tail lights Updated vortex crankcase breather. Motorsport dead pedal, factory fire extinguisher, factory first aid kit, factory F&R mud flaps, factory PDC Bilstein B6 shocks F&R Redline oil has replaced "lifetime" fluids (F&R diff, manual transmission, transfer case and P/S). Dimple magnetic drain plugs in all compartments. |
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#3
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Sorry, it's the dual automatic climate control panel. At about 150K miles I did replace the FSR, but at that time I did have the classic fan blower fluctuation issues. I will get one to replace it. I also have to test all my leads to the unit. Thanks man.
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X5 3.0 AUTO -2001 - 238,000 miles |
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#4
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A good scanner can run each component separately. Eg blower at 50%, each flap motor (feet/dash/defrost). I would suspect the porcupine or the part you replaced (or wiring to it).
If only blows the fuse when demanding heat the logical defect is the hot water valve. Unplug the power to that and see if the fuse still blows (or measure Ω to it)
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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#5
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That is a great idea. But, it still blew the fuse as soon as I connected the three line main power source. I need to do some electric diagnostic. New to me, so I'll tread carefully. Thanks again.
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X5 3.0 AUTO -2001 - 238,000 miles |
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