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Reset the computer after motor replacement

Discussion in 'Gen 4 Prius Technical Discussion' started by Akshaya Desai, Aug 21, 2024 at 8:56 PM.

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  1. Akshaya Desai

    Akshaya Desai New Member

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    Vehicle:
    2018 Prius
    Model:
    Three Touring
    Hi there team, i just had a motor replacement done for 2018 Prius due to hydrolocked engine. After the motor replacement, the error codes still pop up on the dashboard which shut off the motor after 10 seconds to prevent damage. I think the computer will need to be reset to prevent it from shutting down. Is that a dealer thing?
     

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    #1 Akshaya Desai, Aug 21, 2024 at 8:56 PM
  2. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    There are many computers in a Prius, not just one. Four out of five of your photos mostly come from different computers in the car that aren't related to the engine. As you presumably had the 12 volt battery disconnected while replacing the engine, some of those computers may have initialization procedures you need to follow; the repair manual will say what those are:

    Toyota Service Information and Where To Find It | PriusChat

    For each of those messages, there should be trouble codes you can retrieve from the car with a suitable scan tool. I would be especially keen to read the trouble codes behind the "check engine" message; it's not farfetched that those could clue you in to an overlooked engine-replacement step, or one that needs to be rechecked.
     
    #2 ChapmanF, Aug 21, 2024 at 11:36 PM
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