Description
Relays in the Toyota Prius v act as electrical switches, with main clusters located in the engine bay fuse box and under the driver’s side dash. Essential relays include the ECM-Power and EFI (fuel pump) relays, which, if faulty, can cause no-start conditions or driveability issues. Troubleshooting a bad relay involves checking the specific fuse box diagram, typically found on the inside of the fuse box cover, to accurately locate and replace the component.




