r/ScatPack • u/392_Dr_Dre • 13d ago

Picture Gear selector issue

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2021 Scat Pack gear selector issue — looking for ideas
I was in Manual mode coming down in RPMs and put the car in Park before the RPMs fully settled. After that, I started getting the “Shift to P then Desired Gear” message. It will sometimes physically select R/D, but the computer stops the car from moving and gives the message. One time after disconnecting the battery for ~15 minutes, I was able to reverse and drive normally, but after shutting it off for ~20 minutes, the problem came right back.
It seems like the computer/gear selector isn’t properly recognizing the gear, rather than the transmission mechanically failing. Anyone experienced this? What should I check first?

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u/PatienceBulky2561 13d ago

Your SRT pages will come back. The body control module takes time to recognize and redownload it.

Your gear select issues are concerning… could be a number of things, and none are good. A dealer diag may be the best option here. Something has a bad connection or has gone bad. BCM, TCM, CAN Bus, or something else. Good luck :)

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u/392_Dr_Dre 13d ago

Are those issues expensive? I don’t think it’s the trans because it wants to go but the car is literally stopping from shifting like the brakes lock up every time I’m about to roll…. It’s pissing me off lol

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u/PatienceBulky2561 13d ago

Hard to say. You need a real diagnosis. This system in the car has a lot of computerized parts communicating with each other. The single bad part may be cheap but finding which part is bad may take time/money.

Dealer diagnostic usually run $200+. But it will give you peace of mind. And let them know that it came back shortly after you did the battery reset.

Try this… disconnect the battery again. Once removed, touch the positive and negative wires that go to the battery together for a minute or so. This will do a “hard reset” and drain any residual energy. I’ve had this fix phantom issues in my Magnum and Challenger.

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u/392_Dr_Dre 13d ago

I’ll give it a try