Battery issues

[VelocityBronco]

Don't leave your key fob in car when it's in the garage, it seems to use have some effect on battery, still investigating.

I leave my key in mine while in the garage all the time, sometimes for day, no issues...(yet)

The clicking from the engine bay are normal, as told to me by dealer tech and Ford.

Do you have something plugged in (usb charger, etc.) or anything aftermarket that may be wired to the battery?

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[Horse]

I leave my key in mine while in the garage all the time, sometimes for day, no issues...(yet)

The clicking from the engine bay are normal, as told to me by dealer tech and Ford.

Do you have something plugged in (usb charger, etc.) or anything aftermarket that may be wired to the battery?

Got lots of stuff, still investigating.

 

[Gil Carolina]

Got a message today on display screen, " System shutdown to conserve battery". Then everything went dark inside. Checked the battery and it was only 10v. It hasn't been started for a week and a half but that shouldn't have drained battery. I'm charging the battery and see if it's resurrected in morning. Anyone else have this issue.

Its probably the Gremlins that have been randomly turning on my headlights at night. Draining that battery when no one is looking.

 

[Horse]

Hey Man, these Faraday Boxes & Pouches really work - shield your key-fob signal - let Bronco electronics turn-off and get into ' Sleep ' mode

bought these and tested em - the Bronco does not sense your key-fob in one of these Faraday containers

also prevent thieves from trying to copy your key-fob RFID code

I have 2 of them and I still have to wrap key in tin foil and then put it in pouch.

 

[Horse]

I experienced the clicks & what sounds like the brakes activating numerous times with the key fobs left in the house, as I walk by the truck.
& every time I open a door, all the lights come on the dash lights up with it's animation & the keys are 3 doors & 40 ft. ( I measured it) of separation.

One thing I noticed after hooking up my battery tender after having the vehicle sit for about 8 days is that it took 2 days to fully charge.

Mine does that every once in a while

 

[Horse]

The Bronco has a "smart" charging system that reduces alternator output under low load conditions for increased fuel economy. Something must be wrong with yours.

Don't know, charging system should be off when vehicle is in garage

 

[Horse]

Ok update, unwired all mods hooked up amp meter, the only mod that has a drain is 100ma from stepslider, probably solid state relay leakage current from motor circuit, this is not uncommon, especially if made in China. Now as you can see from photos their is a constant 0.41 amp drain on the cable that goes from battery to engine compartment fuse box. I pulled all fuses and it had no effect on drain. If you unhook that cable from ammeter and rehook it up there is a 7amp draw from something that powers up, you can hear it , like a fuel pump or something. After whatever it is cycles it slowly drops to the .41A drain and then periodically jumps to 4A and then drops back down. Their is another fuse box under dash, I will remove those fuses tomorrow and see what happens. So to make a long story short with all mods hooked up and vehicle just sitting there it has a constant .5a drain. Seems excessive. Still investigating. I hope that Ford man reads this and replies.

 

[Horse]

Hello. Can you privately message us with your VIN and the name and location of your Ford dealer? I'd like to look into this battery concern on my end. Thank you!

Hey can you provide me with the info I need to get a factory service manual. Thanks

 

[Paul Gagnon]

Hey can you provide me with the info I need to get a factory service manual. Thanks

You have to buy it from Helm.

 

[Horse]

You have to buy it from Helm.

Thanks

 

[snolen]

Thanks

i have a 2021 first edition that was on dirt mountain and had to have the battery replaced last month it died at the carwash then a few weeks later i pulled it outside and it was dead a few hours later also i had just unhooked it from a battery tender the second time

 

[Horse]

i have a 2021 first edition that was on dirt mountain and had to have the battery replaced last month it died at the carwash then a few weeks later i pulled it outside and it was dead a few hours later also i had just unhooked it from a battery tender the second time

Thanks mine is a year old

 

[DEC]

Just out of curiosity, are you locking the Bronco when this happens? Locking it should put it in sleep mode .

 

[Horse]

Just out of curiosity, are you locking the Bronco when this happens? Locking it should put it in sleep mode .

No it's in garage I never considered it. I will try it see if it makes a difference. Thanks.

 

[porkchop express]

Possibly the effects of Michigan winter storage?

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