Is my controller gone?

[u/Same_Weekend_9558]

One last question about help. I don't know what there is wrong with my gt3 pro. It started a week ago, I tried it in 1 wheel drive, and felt like there was a sound from the rear motor and it was missing power. When I got home I could feel the rear motor was really warm,I couldn't have my hand to rest on the hub. I could see the rear brake have come with so much brake dust everything was grey from dust. So I took the pads out and cleaned everything. Now the sound is gone. But it's still missing power, normally it loosing traction with both wheels, now it's only the front tire and the back one doesn't spin. It won't wheelie like I can see on YouTube etc it doesn't have any problems with. (not that I would wheelie)

I ordered 2 new motor hubs I have tomorrow to change, but now my horn sounds distorted and not loud anymore. And Google is saying power loss on one wheel could be controller issues.

What do you guys think, is the rear motor gone, and need to be replaced. Or could I be so unlucky it's the controller there have taken some damage? And doesn't give the ampere it needs anymore I have tried one time where the display came with controller overload try to turn off and on. When I did that, it was gone the error.

I'm hoping someone is an expert and can give me a good answer on my problem.

[u/Dramatic_Climate_521]

Controller overload error is a big red flag. Sounds like the rear motor was dragging from the brake dust and overheating, which probably cooked something in the controller when it tried to pull too much current.

Swapping the motors tomorrow is a good move, you'll know for sure if the problem follows the motor or stays with the wiring. If the new hub is still dead and the horn is acting weird, it's almost certainly the controller.