If the power light is on, step by step operation from simple to difficult:
1 Repeatedly pinch - release - pinch the brake handle to see if it is back to normal. If it returns to normal, there is a brake problem, possibly a sensor or wire.
2 Open the back seat of the car to see if there is a short circuit. Such a situation would occur if the wrapped plastic skin melted.
3 Remove the battery box and check whether the cable has a break point. Now the battery of the pedal electric vehicle is at the bottom, the screw is unscrewed and you can see that the battery pack is connected in series with a wire, and the solder spot is not welded well, which will be broken due to bumps.
4 The last consideration is the controller damage, because the controller itself is not so easy to break.