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Hybrid Control ECU location?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Mcrogers22, Jan 25, 2019.

  1. Mcrogers22

    Mcrogers22 New Member

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    Location:
    Tempe AZ
    Vehicle:
    2008 Prius
    Model:
    Touring
    2005 Toyota Prius

    Code is U0111 with no sub code.

    Where is the Hybrid Control ECU located and are all 2nd gen HV Control ECU’s compatible? The ECU’s forsale online all say for 06-09. Since mine is 05 I just want to make sure it’s going to work if I put an 08 ECU in it as I have a parts car.

    Haven’t rulled out the Battery ECU just yet but want to be able to fix the issue once I start working on the car.
     
    #1 Mcrogers22, Jan 25, 2019
  2. SFO

    SFO Senior Member

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    Welcome to PriusChat!!

    For the sub codes (INFs) you will need to scan with a hybrid compatible OBD2 device, or a mini-vci cable with techstream ($20 or less).

    Here is the workup for the following DTC/INFs : U0100/212, U0100/530 U0111/208, U0111/531, U0129/220, U0129/222, U0129/528, U0128/529, U0131/433, U0131/434, U0146/435 :

    https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Prius%20Service%20Manuals%202004/%E4%BF%AE%E7%90%86%E6%89%8B%E5%86%8C/04pruisr/05/21bpm/0100211.pdf

    Here is an image that might help you locate the ECU in question :

    [​IMG]
     
    #2 SFO, Jan 25, 2019
    Raytheeagle likes this.
  3. Umerpk

    Umerpk Junior Member

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    Guys what is the location of Intelligent Parking Assist ECU in Japanese Prius 2006?
     
    #3 Umerpk, Apr 30, 2019
  4. Scott Caputo

    Scott Caputo Junior Member

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    Location:
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    Vehicle:
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    I changed the hybrid vehicle control ECU. Do I need to reprogram it?
     
    #4 Scott Caputo, Aug 18, 2022
  5. ContraAl

    ContraAl Junior Member

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    I know this is an old post but I had the same question as Scott.
    The answers is sort of.
    If you replace the Hybrid Vehicle Control ECU the donor unit will have a VIN. For this you will need Techstream or Autel or some other tool. Updating the VIN with these tools can be done offline. Once the VIN is transferred, do a "handshake" process and you should be good to go.
     
    #5 ContraAl, May 9, 2023
    SFO likes this.
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