Prius 2010 headlight fuse (drivers side)

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by sobryaqui, Feb 21, 2025.

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  1. sobryaqui

    sobryaqui Junior Member

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    2010 Prius
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    III
    Help. I replaced the drivers side bulb, and light still not going on, Passenger headlight works, Could be fuse? However I don't know which fuse it is. From what I can understand in the manual it has #40 fuse. Can anyone give me some insight....really trying to avoid a trip to the dealership. thanks. Mrs Smith
     
    #1 sobryaqui, Feb 21, 2025
  2. ChapmanF

    ChapmanF Senior Member

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    A 2010 has two headlight bulbs on each side (assuming it is not the V trim with the LED headlights).

    The bulb you can see just hanging out naked in a reflector is the high beam. The bulb that is behind a round lens is the low beam.

    Which one is not working on your driver's side?

    The high beam bulb is fed from a fuse (labeled H-LP LH HI).

    The low beam is not fed from a fuse, just comes directly from the integration relay (the long white thing). There is a single big 40 amp fuse serving the integration relay and all the different things the integration relay powers. All those things would be not working if that fuse were blown.

    Sometimes if a problem isn't something simple like a bulb, it is best to get a meter and the wiring diagram and just start checking for where the trouble is, rather than making assumptions about where it might be.

    Toyota Service Information and Where To Find It | PriusChat

    It also bears repeating that any time you do happen to find a blown fuse while troubleshooting a problem, you haven't found the problem yet. The problem is whatever blew the fuse.
     
    #2 ChapmanF, Feb 22, 2025
    Brian1954 likes this.
  3. sobryaqui

    sobryaqui Junior Member

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    #3 sobryaqui, Feb 22, 2025
  4. sobryaqui

    sobryaqui Junior Member

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    I am working on the Low Beam light. Again, thank you for your explanation, It was helpful.
     
    #4 sobryaqui, Feb 22, 2025
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