Sudden battery death?

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Dice Roll

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Just wanted to update, mine sat for about 20 hours and the reset didn’t take. At least not fully. Some stuff worked again, but it still said vehicle charging when stop start should be working. I did the manual reset with the brights and brakes and today everything worked again. I think my dome lights have been off and I didn’t notice it u til they came on today. Not sure why the manual says 8 hours will reset things when it won’t. Goofy ass system for sure.
 

Rob6805

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Just wanted to update, mine sat for about 20 hours and the reset didn’t take. At least not fully. Some stuff worked again, but it still said vehicle charging when stop start should be working. I did the manual reset with the brights and brakes and today everything worked again. I think my dome lights have been off and I didn’t notice it u til they came on today. Not sure why the manual says 8 hours will reset things when it won’t. Goofy ass system for sure.
If you short trip a lot disable the ASS with the button or it will kill your battery again.
 

2018ExpyPlatinum

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Just a quick update: Took mine in today for a quick oil change and tire rotation. Battery tested very low. SA said it failed the test. This whole thread flashed back in my head. Told them to replace it. I asked if they did the BMS reset and he said yes. Everything seems to be working properly, but how do I know they reset it? I'm going to throw my trickle charger on it to be sure it's fully charged.
 

Ugh_J

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how do I know they reset it? I'm going to throw my trickle charger on it to be sure it's fully charged.
All the BMS reset does to my knowledge is reset the "Battery Days In Service" value back to 0. You can verify that with an OBDII reader. I have it as an item in my OBDLink MX+ dashboard.
 

2018ExpyPlatinum

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@Ugh_J ...This whole reset thing is weird. I did a search and it says anytime the truck is off and locked for 8 hours or more, an not being charged, it resets. But yet the owners manual says with a new battery you have to reset it. I guess as the kids say...whatever.
 

jjscsix

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General comment. Not everything made is china is junk. They make products to a spec. Many products made for U.S. companies are made in China and they dictate quality standards for the products.

I’m not guessing at this. I have been in several factories in China making products that everyone on this forum use on a daily basis.
 

Mr Big

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General comment. Not everything made is china is junk. They make products to a spec. Many products made for U.S. companies are made in China and they dictate quality standards for the products.

I’m not guessing at this. I have been in several factories in China making products that everyone on this forum use on a daily basis.
I totally agree. Being in the technology business, years ago China products were junk or a hit and miss. Now they surpass many US companies and many peripherals, parts, appliances, TVs, etc. are made in China. The main reason now for the negative comments is purely propaganda because their pricing model is much lower than other's pricing.
 

Left Coast Geek

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There's also the proliferation of noname alphabetsoup brands on platforms like Amazon, EBay, aliexpress, etc that tend to have very poor materials and quality control.
 

jjscsix

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Our 2023 started giving a message a few weeks ago that the battery charge is getting low. I checked the voltage with the engine off over about a week and it shows 12.0 - 12.1 if it has sat for a few hours. Using either a full charger or a trickle charger it would go back up to 12.6 - 12.8, but after a few hours it drops back down again.

I have an appointment tomorrow at the Ford dealer. Will be interesting to see what they decide. Any thoughts welcome. It is 18 months old. It gets driven daily usually 15 - 20 minutes at a time. We have done two long trips in it, and every month or so it gets driven longer distances, say 30 - 60 minute trips. In the same driving I have never had a battery issue on any other vehicle.
 
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