Carrera crossfire E

Ben s

Just Joined
Aug 16, 2019
Hello everybody,
Is anyone can help me? I got with my carrera crossfire E handle bar remote control, i can't display the assisting mode up and down and the engine keep working until i switch off the display, i tried to remove the battery and put it as before but doesn't work this time as before, is there any possibility to use an other display with the same engine and battery? If yes witch one is compatible