Surron X Controller Fail?? What are the signs? Works sometime or not at all?

[Magnatone99]

Thanks. That points me in the right direction. When I checked for error codes I just got a long continuous slow blink. No signs of motor burn (no sluggish...

[Magnatone99]

Bike lights, battery display work when key is turned on. 90% no throttle response. Replaced throttle.... seemed like it got a little better but that just...