XF and XFR ( X250 ) 2007 - 2015

Battery Drain

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Old Oct 18, 2023 | 10:41 AM
  #1  
jackh's Avatar
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Default Battery Drain

2010 XF supercharged battery is going low/dead in 2 days. I have completed a parasitic draw test a few times, which after 10 minutes it drops to under 50milli amps around 15 milli amps . I have noticed the dash illumination lights flickering and info center reset one time.
The battery monitor system if I understand correctly is on the negative cable, plug in with 2 wires, the wires are almost broken right where they come out of connector, but still connected by a few stands, maybe this is related??? Is there a part number for wire pigtail?? I have tested the battery, good, but questioned their tester, so I put a different battery in car has been in car for 12hrs voltage has dropped to 11.8 volt . After reading some posts I have been charging battery incorrectly and need to hook to stud where battery cable bolts to not battery post, I don't think this is causing my issue.
Any info or thoughts where I should be looking?
 
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Old Oct 19, 2023 | 01:44 AM
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If it really drops to under 50mA then I don't see how it can flatten anything but a near dead battery.
 
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Old Oct 19, 2023 | 04:02 AM
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You will need to test for a longer continuous period as something is wakening up the modules. 50 milliamps won't flatten your battery at the rate you have indicated.
 
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Old Oct 19, 2023 | 05:21 AM
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Agree with everything everyone said, but also YES the flickering dispay and dodgy cables should be addressed.

1. Clear these up,
and
2. While in there, look for signs of why they got dodgy/loose/frayed.
(Maybe a prior owner pulled to replace a display and there's a frayed cable further down.)
 
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