INTERMITTENT "Powertrain Malfunction/Reduced Power" Warning with no actual reduction in power...

[TaxmanHog]

Build date is 8/11/2023.

The folks in the 8/7/2023 build week thread aren't writing much about powertrain issues,
https://www.f150lightningforum.com/forum/threads/✅-8-7-2023-lightning-build-week-group-my2023.15685/

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[invertedspear]

They told me to come back when the service icon is on, and they could fix it with a software update (the 23B57 BECM, see screenshot on the ford.com website), though for some reason it could take up to 8 hours.

Dealership is yanking your chain so they don't have to do the work and hoping you get it via OTA before you get frustrated enough to start demanding it, my dealer is doing the same. It's a pretty good sign you want to find another dealer service center. The update is a CSP and should have been installed before you took delivery. 8 hours is just them padding their estimate because service departments are terrible when it comes to the customer experience.

 

[Maquis]

Dealership is yanking your chain so they don't have to do the work and hoping you get it via OTA before you get frustrated enough to start demanding it, my dealer is doing the same. It's a pretty good sign you want to find another dealer service center. The update is a CSP and should have been installed before you took delivery. 8 hours is just them padding their estimate because service departments are terrible when it comes to the customer experience.

I’ll add that the software update will likely not fix the error messages he’s seeing. If anything, those changes make the modules sensing detect smaller variances. A couple people who had problem-free trucks reported getting these messages soon after 23B57 was applied. It’s likely that he needs one or more battery modules replaced, which should get diagnosed by the dealer if the full 23B57 procedure is followed correctly.

 

[chanmnb]

I’ll add that the software update will likely not fix the error messages he’s seeing. If anything, those changes make the modules sensing detect smaller variances. A couple people who had problem-free trucks reported getting these messages soon after 23B57 was applied. It’s likely that he needs one or more battery modules replaced, which should get diagnosed by the dealer if the full 23B57 procedure is followed correctly.

Maquis - you are right. I took it into the dealership 2 weeks ago and they are doing the battery module replacement this week (it took some time to get the right parts). In the meantime they hooked me up with a ICE F-150 Platinum as a rental. It's kind of interesting, I MUCH prefer driving my XLT Lightning over the ICE Platinum -- smoother ride, faster and more responsive acceleration, frunk, power outlets, etc. etc...

Of course the situation is still not ideal, but fingers crossed it gets done by end of week and I'm back to my Lightning.

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