Nikko Rc Car Subaru Impreza Problem With A RC Car Subaru Impreza Nikko?

Problem with a RC Car subaru impreza Nikko? - nikko rc car subaru impreza

I have a Nikko RC car developments move forward, but it no longer works in the opposite direction, would the remote? I took apart, I can not find a cable loose or signs of damage. Ideas?