Gen 2 Prius Technical Discussion

Come discuss the technical ins and outs of the 2nd Generation 2004-2009 Toyota Prius and the Hybrid Synergy Drive System.

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  1. donzoh1

    2008 has howling noise rear end

    donzoh1, Sep 17, 2025
    Replies:
    1
    Views:
    418
    pasadena_commut
    pasadena_commut
    Sep 18, 2025
  2. Eman123

    disable key fob due to stolen registration

    Eman123, Sep 10, 2025
    Replies:
    6
    Views:
    595
    Eman123
    Eman123
    Sep 16, 2025
  3. pasadena_commut

    "Mushy" transition from OFF to ACC

    pasadena_commut, Sep 16, 2025
    Replies:
    0
    Views:
    354
    pasadena_commut
    pasadena_commut
    Sep 16, 2025
  4. pasadena_commut

    Adding water to 12V battery

    pasadena_commut, Aug 5, 2025
    Replies:
    5
    Views:
    710
    pasadena_commut
    pasadena_commut
    Sep 13, 2025
  5. Tom600x

    Problem dash is completely dead and Ignition switch no lights

    Tom600x, Nov 15, 2020 ... 2
    Replies:
    24
    Views:
    21,793
    gdanner
    gdanner
    Sep 12, 2025
  6. Clarence Pascual

    Key Fob Doesn't Start Car When in Slot

    Clarence Pascual, Sep 10, 2025
    Replies:
    10
    Views:
    612
    Prius_Gnome
    Prius_Gnome
    Sep 11, 2025
  7. J Conner

    How to know if control arm needs replacement?

    J Conner, Jan 26, 2019 ... 2
    Replies:
    20
    Views:
    10,464
    TBM
    TBM
    Sep 10, 2025
  8. Straha

    Red Triangle of Death and Engine not starting, but no OBDII error code.

    Straha, Sep 9, 2025
    Replies:
    1
    Views:
    426
    dolj
    dolj
    Sep 10, 2025
  9. monoshock

    Anybody on here repair the instrument cluster ?

    monoshock, Aug 30, 2022
    Replies:
    12
    Views:
    4,508
    Tombukt2
    Tombukt2
    Sep 8, 2025
  10. PartlyEVDave

    In a pickle with a Prius!

    PartlyEVDave, Aug 28, 2025
    Replies:
    13
    Views:
    791
    PartlyEVDave
    PartlyEVDave
    Sep 8, 2025
  11. caliwaves

    OEM hybrid battery vs newpriusbatteries?

    caliwaves, Jan 17, 2021 ... 2
    Replies:
    24
    Views:
    12,921
    PriusCamper
    PriusCamper
    Sep 6, 2025
  12. Vysse

    Recommended Mechanic Northwest Arkansas Area

    Vysse, Jul 30, 2018
    Replies:
    5
    Views:
    2,714
    2Fats
    2Fats
    Sep 3, 2025
  13. MonkButter

    Worth repairs? (Bad Cat and Coolant System)

    MonkButter, Aug 16, 2025
    Replies:
    15
    Views:
    1,179
    Brian1954
    Brian1954
    Aug 31, 2025
  14. pasadena_commut

    12V voltage recovery curve used by battery testers? Probably not.

    pasadena_commut, Aug 17, 2025
    Replies:
    4
    Views:
    545
    pasadena_commut
    pasadena_commut
    Aug 28, 2025
  15. gdanner

    Why do hybrid battery control module connectors get corroded?

    gdanner, Jul 21, 2025 ... 2 3 4
    Replies:
    64
    Views:
    5,056
    gdanner
    gdanner
    Aug 27, 2025
  16. WSCC

    Electrical SKS Woes

    WSCC, Aug 19, 2025
    Replies:
    4
    Views:
    562
    WSCC
    WSCC
    Aug 26, 2025
  17. Smychnyk

    Why don’t refurbished Prius battery sellers show cell specs?

    Smychnyk, Aug 23, 2025
    Replies:
    4
    Views:
    758
    T1 Terry
    T1 Terry
    Aug 25, 2025
  18. Dion Kraft

    Water valve controller disasembly

    Dion Kraft, Aug 22, 2025 ... 2
    Replies:
    31
    Views:
    2,040
    Tombukt2
    Tombukt2
    Aug 24, 2025
  19. Cyon Kim

    Testing individual battery cell with load applied (how many amps should I apply?)

    Cyon Kim, Apr 23, 2016
    Replies:
    3
    Views:
    9,733
    gdanner
    gdanner
    Aug 23, 2025
  20. 80sguy

    Odd Trio of codes

    80sguy, Aug 22, 2025
    Replies:
    3
    Views:
    459
    dolj
    dolj
    Aug 22, 2025
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