Brake Fluid Service and Fuel Injection Service

Discussion in 'Gen 5 Prius Care, Maintenance and Troubleshooting' started by Lacas G, May 4, 2026 at 1:43 AM.

  1. Lacas G

    Lacas G New Member

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    Hey guys, I have a 23 Prius XLE AWD with 45k miles. My Prius has had all of its maintenance done at my Toyota dealer where I know the owner (helped me get the car and upgrades, discounts, etc.)

    This last maintenance the tech recommended a brake fluid flush and fuel injection service.

    I know it’s not stated on the scheduled maintenance log in the owners manual. But wanted to ask if any one of you have done this service or plan to at what intervals?

    I have a good friend who’s a mechanic outside of Toyota who also said he recommends these services.

    Let me know!
     
    #1 Lacas G, May 4, 2026 at 1:43 AM
  2. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Toyota Canada maintenance schedule recommended to replace the brake fluid every 48k kms (~30k miles) or 3 years, whichever comes first.

    I’ve roughly followed that, though stretched it some.

    Fuel injection service seems purely a dealership instigated service, I’ve never seen it recommended as a regular maintenance, over our years of owning cars.

    Hand cleaning the throttle body, say every 50k miles at the most, seems a good idea.
     
    #2 Mendel Leisk, May 4, 2026 at 8:53 AM
    Last edited: May 4, 2026 at 9:00 AM
    Trollbait and Lacas G like this.
  3. Trollbait

    Trollbait It's a D&D thing

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    Some brands say every 2 to 3 years for brake fluid. Others say mum on it. I believe climate has more to do with it than time, doing a change when a moisture reading says to do it. I don't think a true flush is necessary though; just a fluid change.

    Avoid cheap gas brands, and the injectors should be fine. An intake cleaning that reaches the valves is likely a good idea for direct injection engines at some point.
     
    #3 Trollbait, May 4, 2026 at 10:04 AM
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