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It say on the lot 1.5 months. They keep testing the battery and they said it’s good but maybe that is a surface charge?

Just bought a 21 f-150 3.5L twin turbo v6 truck. I sold cars for a long time so when I test drove I saw these issues there, but thought they were from general settings… when I talked to the dealer, they have said they don’t have the money to dive into the issues but they are willing to get me...

When I went in for the fuel, economy and pressed auto start stop, that’s what it said.

It’s reading 12.4 volts after about an hour.

I’m being told by a service manager that because I have an auto stop start feature on my 21 3.5L ecoboost that I have a second auxiliary battery. My auto stop start has never worked, so if I have one I think it is dead. I have watched videos and it says it was behind the passenger side rear...

Does anyone know where I can get a or have wiring diagram for this truck so I can figure out what the wires do?

Any reason they would need a second when there is one built in? Like types that don’t use the truck version?

I got it from a dealer, but they bought it from an auction.

I just bought a 21 F150 3.5 L V6. It’s having quite a few issues in my first week of having it. We went to check the fuse box for something and found all these wires and they come to the driver side floor, but plugged into anything. the green and brown are spliced into a harness near the battery...