2017 Prime headlight failure

Discussion in 'Prime Main Forum (2017-2022)' started by ForestBeekeeper, Mar 11, 2025 at 11:53 AM.

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  1. ForestBeekeeper

    ForestBeekeeper Active Member

    Joined:
    Sep 19, 2011
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    Location:
    Maine
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    My left-side headlamp began flickering and intermittently going dark this past November. When it goes dark it triggers the check engine light. When I turn the headlights off the error code seems to reset.

    Beginning in March the check engine light comes on every time the headlights are turned on.


    I took it to our dealership to get some idea of what was wrong.

    On 8 March 2025 the dealership says that I need to replace the headlight assembly and its computer. The assembly costs $1700 and the computer $200. With projected labor fees the total cost will be $2700.

    For a failing head light, or I assume a loose connection [since it has been an intermittent failure]. This appears to be an extremely out of proportion remedy.
     
    #1 ForestBeekeeper, Mar 11, 2025 at 11:53 AM
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    This is how Toyota has evolved. Even gen 2 had some messed up lights iirc.
    It’s likely that all manufacturers are following this model to keep manufacturing costs down.
    Pay me now, or…
     
    #2 bisco, Mar 11, 2025 at 2:13 PM
    ForestBeekeeper likes this.
  3. BiomedO1

    BiomedO1 Senior Member

    Joined:
    Mar 27, 2021
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    Location:
    SacTown, Ca
    Vehicle:
    2021 Prius Prime
    Model:
    LE
    IMHO; at that price I'd start looking online for a left headlamp assembly and replace it yourself. Re: the computer; is that integrated into that headlamp or does it control both? While it's just $200 bucks, you may be able to find one and try replacing that first?

    Good Luck.
     
    #3 BiomedO1, Mar 11, 2025 at 4:33 PM
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