My truck sat since Tuesday night in the garage. Past couple days teens and low 20's have been the temps. I bought my work laptop out to the truck so I don't forget it tomorrow and none of the lights came on, nor did the running board deploy. I closed the back door, opened the front, no lights but the running board did come down. I went back into the house and grabbed the key. Went to start it, the dash was really slow to respond, the engine paused for GP warming, then two cranks and quit. It would not shut off when pressing the switch. It finally shut off, then turned on, vary slowly with one gauge then the others until everything lit up. Again, two cranks and quit. I went out to the barn and grabbed my charger, hooked it up and seeing 12.3 volts. When it cranks, it sounds normal too, no dimming or anything, but not acting right at all. I put it in start mode, let it sit for a bit then hit the start button, again two cranks and quit. shut if off, if I take my foot off the brake it shuts off normally, if my foot is on the brake it does not shut off. Tried it once more, 2 cranks and it ran, had it not started it again would have quit at 2 cranks.

The adaptive cruise, although set, pops up normal cruise, no adaptive braking.

I have the charger on it right now and will give it a couple hours of charge, but not sure its battery related as the voltages are good, and not indicating low voltage either when starting, just getting a really slow display and only 2 revolutions of the starter. Will try it again before I go to bed and see what it does.

 

Yeah, I wouldn't consider that extreme cold. Maybe just crappy batteries? Some have had bad batteries from factory, while some have been fine for years.

 

Leaning towards a bad battery. It started on the second attempt, again, two revolutions of the starter and quit. Drove 60 miles at highway speeds and with 410 amps of alternator, should have charged both batteries to max. Got to work, shut down, radio turned off immediately, and BSM on the big screen. This is after a 6 hour charge last night. Also, no lights when I open a door.

 

Have them load tested

 

I emailed my Service dude. He agrees its a bad battery so arranging to have it located and swapped. Provided of course the truck actually starts here at work.

 

Batteries! Tis the time of season for diesel batteries. Few freezing days kills those deceptive batteries that show you good voltage but really have their fingers crossed knowing they'll leave you with a no start.

4 days of my equipment sitting since thanksgiving and you bet I showed up on site this morning with two jump packs and six new batteries.

 

Only 8 months old to boot.

 

Agm or lead acid? Which do you prefer for diesels?

 

With the reduced compression on the latest 6.7PSD it shouldn't matter

 

you been around here a long time. surely youve seen all the crap battery threads going back a couple yrs now. are you telling us your one bit suprised you have 8mon old crap batteries ?

 

lead acid. To be honest I haven't had the bad luck others have with the Motorcraft batteries. All but one of my trucks are gas though, so way easier on their single battery.

 

Why lead acid vs. agm? I've been moving all of my batteries to agm when the time comes. My 2017 had the lead acid batteries and both drivers and passenger side corroded the positive cables so bad, I had to get them replaced (the cables) under warranty.

 

No, no surprise, that was more of a SMDH reply. Sitting at the dealer right now while they work on it. They will check the AC compressor while at it.

 

Isn’t there another thread on this forum talking about bad batteries on brand new trucks? Seems like I saw something a week or so ago.

 

Plenty of them. The symptoms on mine were unlike what normally happens with bad batteries, must be how the 23+ are now programmed. There was plenty of juice in the one battery to crank the engine, but it quit after the second turn of the starter motor. Usually it would turn slow or not at all, but sounded perfectly normal, for two turns. LOL I wasn't sure when I posted if it was the battery. When all the alerts came up while driving, now that convinced me it was a battery. Sure were a lot of them.