Bronco engine will not shut off (problem: tapped into fuse #3)

[HT00124]

I have a 2024 Bronco Sport Big Bend, and this issue happened to me this last weekend. Went to start the Bronco and it was completely dead, checked the battery with a meter and had 1 volt. Put the battery on trickle charge for a day and then tried again. Bronco started up no issues no alarms or CEL, however, when I tried to shut it off, the engine just kept running. Took it for a a 25 km (15 mile) drive to cycle the drive mode and tried to shut the engine off, but again it would not shut down. After about 10 - 15 just idling, the engine finally shut off, but everything was still powered up. Started the Bronco up again, and once more it would not shut off. Eventually I just pulled the fuse box and pulled the negative cable from the battery to shut everything down. It's now at the Dealer and they have never heard or seen this before, hopefully they can figure it out.

So, here's an update, got the Bronco back from the Dealership and was told that the problem was because I had taped into fuse #3 in the passenger foot well fuse block, (which is switched power) to send a 12 volt signal to the remote on for my sub woofer install. Does this sound like a logical reason, for me it doesn't sound right. The sub woofer is hard wired directly to the battery with an inline fuse and is only powered up when it gets the 12 volt signal from the switched on power when the Bronco is started. anyone else out there have this happen when hooking up an accessory to fuse #3 ?????

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[HighVelocity]

So does removing your add-a-tap fix the issue?

 

[HT00124]

So does removing your add-a-tap fix the issue?

According to the Dealership, it fixed the issue, however I still have to pick up my Bronco and give it a few days to see if the problem reoccurs or not. Time will tell.

 

[RagnarKon]

I don't know what Fuse #3 on the Bronco Sport is, but it's definitely possible that could have been the issue.

I'd go over to the Bronco Sport forum and ask what people are using for power for amplifiers and whatnot. This forum is for the Bronco and not the Bronco Sport, so you'll find people that are much more knowledgeable about the Bronco Sport over there.

https://www.broncosportforum.com

EDIT-- Op never mind, you already made a post over there.

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