Power gauge question
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I've been reading the owners manual. I do think this is covered in there; truck limits power sometimes when needed. I just can't remember why.
2021 Mustang Mach E First Edition, 2016 Nissan Leaf, 2003 Toyota Tacoma, F-150 Lightning Lariat ER
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3,767 Posts
What were the conditions that day. Had you been running the truck hard? Just DC Fast Charged? Just starting out on a cold-soaked battery? Lots of things might be contributing. That said, I have never seen this happen.
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26 Posts
Battery temp
I’ve been experiencing it a lot lately.
I’ve already had the 12 V battery replaced because of the wrench icon (which had me scared that the big battery was the problem but thankfully not). I thought after the 12 V was replaced this would go away but it just happened again recently.
As a matter of fact, I can’t really figure out rhyme or reason to why it’s happening. It’s not always tied to ambient temperature because it’s happened when the ambient temperature was in the 40s and 50s. It happened to me last night, not at the cold start up when I left work; which is when I would logically figure it would, but I noticed it had showed up by the time I got home roughly 30 minutes later. Ambient temperature was only in the 20s, but yet you would think the battery was warm by then?
The only consistent thing that I can say about it is that my battery available power has only dropped to 90% each time. So it’s not dropping as far as yours– but it is dropping.
I’ve already had the 12 V battery replaced because of the wrench icon (which had me scared that the big battery was the problem but thankfully not). I thought after the 12 V was replaced this would go away but it just happened again recently.
As a matter of fact, I can’t really figure out rhyme or reason to why it’s happening. It’s not always tied to ambient temperature because it’s happened when the ambient temperature was in the 40s and 50s. It happened to me last night, not at the cold start up when I left work; which is when I would logically figure it would, but I noticed it had showed up by the time I got home roughly 30 minutes later. Ambient temperature was only in the 20s, but yet you would think the battery was warm by then?
The only consistent thing that I can say about it is that my battery available power has only dropped to 90% each time. So it’s not dropping as far as yours– but it is dropping.
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220 Posts
that was my first thought too, but his picture includes the battery temp and it shows spot on normal.
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I wish is was easier to get more system data and charge data. I know the data is there.
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35 Posts
Truck had been sitting in the cold overnight...35° but was charging on house current before I took it for the drive.
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8 Posts
I had the same thing happen - it was chilly but not cold, like 30º. But when driving earlier in 5º I was getting 100% power available. I'm equally baffled, couldn't figure it out.
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