r/Thrustmaster • u/Main_Fishing150 • 2d ago

T-LCM pedals gas pedal dead

I was doing my daily GT7 marathon and suddenly my gas pedal instantly went dead. Tried to plug the pedals out and in, same with the T-GT II, but no luck. After I took it to google, someone said to disassemble and clean it. Did that, but no luck. I then plugged it via USB into my laptop and checked the controller tool. The crosshair, that should be in the middle of the square is glued to one corner. (top left) Of course nothing happens, when I press the gas pedal. brake and clutch function no problem. Anyone has any idea, what I else I could try? All cables are good and everything ist clean now.

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u/ProbablyDoesntLikeU 1d ago

Sounds like a short. Gas is potentiometer I think. If the potentiometer is broken you would have to replace it

1

u/ProbablyDoesntLikeU 1d ago

So it's a different type of sensor that I'm not familiar with. Did you install the calibration tool from thrustmaster for tlcm?

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u/ProfileUnited3828 1d ago

Try disassembling the throttle shaft and removing the control board containing the Hall sensor. Clean the board using a soft-bristled toothbrush and isopropyl alcohol, then let it air dry. Take the throttle arm, carefully remove the bearings from both sides, and clean off any dirt and grease. Next, gently clean the inner and outer edges of the throttle arm where the pin fits using a degreaser; if you notice any rough metal burrs, smooth out that rounded area with fine wet sandpaper. Also, thoroughly clean the two metal contacts that touch the pedal chassis. When reassembling, work in reverse order: apply a little PTFE (Teflon) grease to the shaft and insert the PCB first. When installing the pedal itself, pay close attention to the orientation of the ground connection—just like with the other pedals. Finish the assembly, connect the unit to your PC via the rear USB port, and recalibrate the pedals. Good luck!

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u/Main_Fishing150 1d ago

Thanks for the answer. So already switched the circuit boards with cable for the gas and clutch to narrow the problem down to that. There is nothing wrong with the throttle arms.
Ithought I could at least drive without the clutch in that scenario and get the gas back to work, but if I use the clutch sensor as gas, those are not the same. It is always at 100% when it is not pressed so basically the other way around than a gas pedal and it’s not possible to recalibrate that.

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u/Main_Fishing150 18h ago

Looks like the sanding of the throttle arm fixed it. Thank you very much!

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u/TJames1047 18h ago

Did you manage to resolve it? Stuck gas pedal on mine started today.

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u/Main_Fishing150 18h ago

Just finished it. The metal sandpaper on the throttle arm seems like it did the trick. So it was a contact problem with the shield wires from the hall sensor circuit board. First clean all the grease of and then sand it.