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Everything dead

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  #1  
Old 01-23-2021, 04:27 PM
Charles W Hallmark's Avatar
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Default Everything dead
Son connected jump box backward on 2016 F150. Now everything is dead. What is likely cause. Please help. We are out of town and need to get on the road again.
 
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  #2  
Old 01-23-2021, 04:29 PM
scott.butler4's Avatar
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What engine.
 
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Old 01-23-2021, 05:17 PM
scott.butler4's Avatar
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OK so 3.5 ecoboost.
What happens when you turn on key/try to start, does anything light up or anything?

Check that your two high voltage fuses that go to the battery junction box are intact.
 
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