2015 6R80 acting weird - wrench light

[Bluemustang]

My transmission has been acting weird for weeks. When I have in S-manual mode, periodically the computer takes over and cancels my gear choice and downshifts on its own, until I click the paddle again to get control. This morning I actually got a wrench light - see manual. I shut the engine off and restarted it and wrench light went away. Mechanically, the car still shifts OK. I do need to change the upshift paddle shifter because sometimes it does not engage unless I hit it just right.

Any idea what is wrong? It sounds like a computer issue.

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[Crew4991]

The good thing here is that you have the reliable 6 speed automatic rather than the 10 speed auto. Unlikely an issue with the transmission itself; my best guess would be either the computer or a solenoid.

 

[Bluemustang]

The good thing here is that you have the reliable 6 speed automatic rather than the 10 speed auto. Unlikely an issue with the transmission itself; my best guess would be either the computer or a solenoid.

Is there a way I can troubleshoot on my own you think?

 

[Crew4991]

Is there a way I can troubleshoot on my own you think?

Possibly, if you have a high end scan tool like an Autel you could figure out what exactly is happening with the transmission.
If you don't, search around for a good local mechanic or shop that has a reputation for serving their customers and investigating problems. Hold off on going to the dealership until you have exhausted all other possible options.

 

[akmon]

My transmission has been acting weird for weeks. When I have in S-manual mode, periodically the computer takes over and cancels my gear choice and downshifts on its own, until I click the paddle again to get control. This morning I actually got a wrench light - see manual. I shut the engine off and restarted it and wrench light went away. Mechanically, the car still shifts OK. I do need to change the upshift paddle shifter because sometimes it does not engage unless I hit it just right.

Any idea what is wrong? It sounds like a computer issue.

Sorry For the floating? Did you solve the problema? Thank you.

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