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Negative Battery Cable Completely Loose From Factory

Irideducs

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Out of nowhere, I started getting repeated trailer brake system failure and front camera disabled warnings on my ‘22 BD with 8,000 miles.

I pulled over and found that the negative battery terminal was loose - in fact, the tightening nut was at the extreme end of the bolt - like it was never tightened at the factory!

Build date was April 1, so I’ve been waiting for something like this to happen. I’m surprised that I made it this far without a problem.
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Broncodave

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I would think that your dealer should have caught that. They should have gone over the Bronco before delivery. Of course Ford should have gotten it right in the first place, but still...
 

Boreal

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After 8,000 Miles, it might be safe to say that the nut naturally backed off due to NVH. Although, the fact it was never tight to begin with is an oversight by QC at Factory and Dealer levels. Snugging electrical connections hasn’t been Fords strong point as of late
 

Lifeliberty

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. Snugging electrical connections hasn’t been Fords strong point as of late
Lol, that's Ford's way of saying "Welcome to Ford! "
 

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Boreal

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HBTFD

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That issue can be hard to find once your bronco leaves the operator that tightens the cable. All the testing is current based and if the cable is making good contact with the battery loose the tester won’t see anything. Also any repair requiring the battery to be disconnected is an opportunity for the repairman to forget to retighten. If you bronco was on dirt mountain the battery may have been disconnected, it’s standard practice for vehicles sitting for long periods to disconnect the batteries and over fill the tires.
 
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Irideducs

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That issue can be hard to find once your bronco leaves the operator that tightens the cable. All the testing is current based and if the cable is making good contact with the battery loose the tester won’t see anything. Also any repair requiring the battery to be disconnected is an opportunity for the repairman to forget to retighten. If you bronco was on dirt mountain the battery may have been disconnected, it’s standard practice for vehicles sitting for long periods to disconnect the batteries and over fill the tires.
Mine was on dirt mountain for two months waiting for transport. Makes sense that they removed the cable, but I have to say that the nut, backed all the way off to the very beginning of the bolt, looked untouched and directly from the parts bin. I don’t think it backed off from mileage, but will keep an eye on it.

I was just glad to have it fixed in 3 minutes. There are other threads about electrical gremlins from improperly seated connectors behind the dash.

As a PSA, I did also find that most of the fuses were not fully seated. The olds grounding the fuse box were tight, however.
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