The first thing is that you take codes to see what part is failing you. When the Over Drive dismiss, it is because there is a transmission failure and has stored a fault code, it is best that with the vehicle on, I take codes because they have already happened to me that they put the battery voltage to ignition so that the fault codes are erased after knowing the codes you have to try voltages and earth poles of the components that appear because you may take one of them Voltage or Pole Earth in the lights and when I turn on them, it produces you fail.