remote circuit

Wireless remote control car. Motors turn on upon connecting batteries to the circuit (Reciver), while remote controller (Transmitter) turned off (Not connected any batteries). Not a slightest clue of what to do in this situation, any help would be greatly appreciated.

Hi I am trying to repair my cars remote control unit but no one can identify what the part is that I require. Its for a 2102 Subaru liberty in Australia. Its says on it 400h we think. any suggestions appreciated. This is a picture of the intact part on the remaining working remote unit. Thanks