mileage and...

Discussion in 'Generation 1 Prius Discussion' started by bigblock67, Apr 26, 2012.

  1. bigblock67

    bigblock67 433K with new cells

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    If a cluster is changed ,what will display as far as mileage? Also check engine light on old cluster. Is all info within computer or cluster?
     
  2. electrontechnik

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    It will probably display the mileage stored in the car's main ECU. All info should be within the computer/ECU not the cluster, which is just a display by itself.
     
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    The odometer reading is stored within the combination meter ECU (which is what I believe you are calling the "cluster".) If you replace that with a used part, the odometer reading will be based upon whatever was stored in the used part.

    If the engine ECU has logged DTC, the check engine light will appear.
     
  4. bigblock67

    bigblock67 433K with new cells

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    Yes, The cluster will be replaced. Is there a way to identify and change the ECU within the cluster?

    Thanks
     
  5. Patrick Wong

    Patrick Wong DIY Enthusiast

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    I believe that the combination meter ECU is the same as what you are calling the cluster, and that it is not possible to separate the ECU from the display.