relay integration unit

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by awweiss, Feb 18, 2026 at 12:17 PM.

  1. awweiss

    awweiss New Member

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    How do I replace the relay integration unit in a 2010 Prius
     
  2. bisco

    bisco cookie crumbler

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  3. PriusCamper

    PriusCamper Senior Member

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    So you're posting in the Gen2 (2004-2009) Prius forum but your profile indicates you have a Gen3 Prius (2010-2015). So you might be posting in the wrong forum...

    There's alot of different relays in a car and looks like Amazon does sell a "relay integration unit" for 2010 Prius... But in general relays rarely fail and it's almost always the signal that tells the relay to work that's not working.

    Here at Priuschat we go through a process to properly diagnose what's wrong based on symptoms then we find a way to confirm that what you spend your money on is going to work and won't be a waste of time.

    So not really sure what you're trying to do here. Only advice I can offer is that you can bring some tools to a wrecking yard and find the relay unit you need and practice pulling it out before you have to work on your own car.
     
  4. rjparker

    rjparker Tu Humilde Sirviente

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    On a gen3 it is a white module with relays in the engine fuse box.

    It has two tabs on each end to allow it to lift up. There are cables with connectors on the bottom that usually have enough slack to disconnect but the cables will be stiff.

    I would make darn sure a given relay inside was bad before attempting replacement.


    From a customer's 2011 at a local independent hybrid shop. A 2010 has a different part number
    IMG_0580.jpeg


    Bottom view from ebay part
    IMG_0582.jpeg
     
    #4 rjparker, Feb 18, 2026 at 1:33 PM
    Last edited: Feb 18, 2026 at 2:01 PM
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