Hybrid Electric Vehicle Training Educator

Power Button


  • information
  • technical details

The power button functions are the same as the ignition key in a conventional vehicle. If the driver presses the power button once with the brake pedal applied, the instrument display lights up. The hybrid system is now ready to accept additional requests from the driver. For example, the driver can put the car in drive or reverse or turn on the air conditioning (A/C). When the vehicle is at rest, the driver may press the power button, shutting down the hybrid system.

An indicator light is built into the power switch so that the driver can check whether the hybrid control system can start. If the light is orange, the driver has not depressed the brake pedal. The power button works in conjunction with the brake pedal, park position switch, smart key, and shift lever position. Each component listed above is wired hybrid vehicle electronic control unit (HV ECU). Each signal supplies input to the HV ECU. If conditions are right for the driving mode, the HV ECU will carry out the request. If conditions are not correct for driving, the multi-information display will show a message within the combination meter. An example is when the smart key is not detected.

© 2012 National Alternative Fuels Training Consortium.

Power Button

Power Button