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. ski.dive

    12V battery-11.9v engine off &13.7v with Hybrid battery 'only'running

    ski.dive, Apr 11, 2019
    Replies:
    10
    Views:
    5,438
    bisco
    bisco
    Oct 10, 2025
  2. Spencer MaeCroft

    P0a72-515 engine error code help

    Spencer MaeCroft, Oct 6, 2025
    Replies:
    5
    Views:
    1,495
    ChapmanF
    ChapmanF
    Oct 9, 2025
  3. arlofleenor

    Reverse polarity issue 2009 Prius

    arlofleenor, Oct 6, 2025
    Replies:
    7
    Views:
    1,518
    Hayslayer
    Hayslayer
    Oct 9, 2025
  4. Kadian rutty

    Gen 2 Prius will not crank

    Kadian rutty, Oct 4, 2025
    Replies:
    12
    Views:
    2,135
    dolj
    dolj
    Oct 7, 2025
  5. pasadena_commut

    Current by Power State and Option combinations

    pasadena_commut, Oct 6, 2025
    Replies:
    0
    Views:
    1,180
    pasadena_commut
    pasadena_commut
    Oct 6, 2025
  6. gen2prius

    Actuators and Blinkers Go Off When Door is Unlocked Keylessly

    gen2prius, May 14, 2025
    Replies:
    12
    Views:
    2,778
    gen2prius
    gen2prius
    Oct 1, 2025
  7. PapaDiZz

    2007 Prius Combination Meter - No Odometer/Speedometer after Full Recap

    PapaDiZz, Sep 13, 2025
    Replies:
    3
    Views:
    1,672
    PapaDiZz
    PapaDiZz
    Sep 26, 2025
  8. Duncwarw

    Urgent Help Needed!

    Duncwarw, Jul 8, 2025 ... 2
    Replies:
    34
    Views:
    5,070
    mr_guy_mann
    mr_guy_mann
    Sep 22, 2025
  9. donzoh1

    Upstream O2 Sensor removal

    donzoh1, Sep 21, 2025
    Replies:
    2
    Views:
    1,075
    mr_guy_mann
    mr_guy_mann
    Sep 22, 2025
  10. viciousthinker

    2005 Pri, small hose from ICE reservoir cap is pointing down and disconnected, dumps coolant!

    viciousthinker, Sep 20, 2025
    Replies:
    4
    Views:
    1,039
    Mendel Leisk
    Mendel Leisk
    Sep 20, 2025
  11. Freeport

    Gen 4 modules for Gen 2 pack

    Freeport, Jan 25, 2023
    Replies:
    19
    Views:
    4,299
    PriusCamper
    PriusCamper
    Sep 19, 2025
  12. donzoh1

    2008 has howling noise rear end

    donzoh1, Sep 17, 2025
    Replies:
    1
    Views:
    1,010
    pasadena_commut
    pasadena_commut
    Sep 18, 2025
  13. Eman123

    disable key fob due to stolen registration

    Eman123, Sep 10, 2025
    Replies:
    6
    Views:
    1,373
    Eman123
    Eman123
    Sep 16, 2025
  14. pasadena_commut

    "Mushy" transition from OFF to ACC

    pasadena_commut, Sep 16, 2025
    Replies:
    0
    Views:
    927
    pasadena_commut
    pasadena_commut
    Sep 16, 2025
  15. pasadena_commut

    Adding water to 12V battery

    pasadena_commut, Aug 5, 2025
    Replies:
    5
    Views:
    1,438
    pasadena_commut
    pasadena_commut
    Sep 13, 2025
  16. Tom600x

    Problem dash is completely dead and Ignition switch no lights

    Tom600x, Nov 15, 2020 ... 2
    Replies:
    24
    Views:
    24,919
    gdanner
    gdanner
    Sep 12, 2025
  17. Clarence Pascual

    Key Fob Doesn't Start Car When in Slot

    Clarence Pascual, Sep 10, 2025
    Replies:
    10
    Views:
    2,351
    Prius_Gnome
    Prius_Gnome
    Sep 11, 2025
  18. J Conner

    How to know if control arm needs replacement?

    J Conner, Jan 26, 2019 ... 2
    Replies:
    20
    Views:
    12,714
    TBM
    TBM
    Sep 10, 2025
  19. Straha

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

    Straha, Sep 9, 2025
    Replies:
    1
    Views:
    1,018
    dolj
    dolj
    Sep 10, 2025
  20. monoshock

    Anybody on here repair the instrument cluster ?

    monoshock, Aug 30, 2022
    Replies:
    12
    Views:
    6,215
    Tombukt2
    Tombukt2
    Sep 8, 2025
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