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Just got my SST SO back today. Dealer did all the TSBs which alone did not resolve the issue. The StarCase directive also helped them find a folded gasket on a (the?) throttle body that was causing an air leak. CEL clear, fingers crossed.

No, you’re right. In my case I think it took a couple of weeks when we were only doing very short hops driving my wife to PT sessions. The alternator didn’t have much time/distance/speed to recharge the battery.

It may just be that I'm the only dummy, but on my 2025 Laramie I left a power plug to my dashcam connected to the dashtop 12v (cigarette-style) port. No device, just loose connectors tucked away. It turns out that the 12v supply is not switched power and is connected directly to the battery...

My SA said he applied the latest TSB without success, but YMMV. Some of the discussion in this thread indicates some extensive troubleshooting - from fuel injector replacement to MAP/O2/knock sensor sensitivity and my dealer even blamed the Phoenix heat and the need for 92octane. My cynical...

My older scan gauge (circa 2010) was not able to read a CEL code recently. It defaulted to P0000 and the SA since let me know it had stored misfire codes. YMMV.

I'd hold off. The use of the SST in the Grand Wagoneer may have given me a false sense of maturity for this engine. Looking back at an old Car-n-Driver article, it looks like the 2023 GW SST implementation was the HO version at 510hp. Since most of the misfiring reports are on the 420hp SO...

New to the forum in large part to follow and share on this thread. My 2025 1500 Laramie SST is in the shop for a second time dealing with misfire codes (~1800 miles on the odometer). The SA has opened a StarCase, so I'll be not-so-patiently waiting for word on progress. The first instance was...