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. dcwenger

    Brakes Pulsating and Hesitating on 2005

    dcwenger, May 16, 2025
    Replies:
    17
    Views:
    3,454
    BiomedO1
    BiomedO1
    Nov 2, 2025
  2. SBP Mike

    2007 Prius won't light up

    SBP Mike, Apr 24, 2025 ... 2 3
    Replies:
    49
    Views:
    10,416
    pasadena_commut
    pasadena_commut
    Oct 14, 2025
  3. JoeVR

    2007 Prius Tapping - timing chain or rod knock? (how to test?)

    JoeVR, Aug 19, 2025
    Replies:
    9
    Views:
    2,292
    Tombukt2
    Tombukt2
    Oct 13, 2025
  4. ski.dive

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

    ski.dive, Apr 11, 2019
    Replies:
    10
    Views:
    5,558
    bisco
    bisco
    Oct 10, 2025
  5. Spencer MaeCroft

    P0a72-515 engine error code help

    Spencer MaeCroft, Oct 6, 2025
    Replies:
    5
    Views:
    1,568
    ChapmanF
    ChapmanF
    Oct 9, 2025
  6. arlofleenor

    Reverse polarity issue 2009 Prius

    arlofleenor, Oct 6, 2025
    Replies:
    7
    Views:
    1,597
    Hayslayer
    Hayslayer
    Oct 9, 2025
  7. Kadian rutty

    Gen 2 Prius will not crank

    Kadian rutty, Oct 4, 2025
    Replies:
    12
    Views:
    2,253
    dolj
    dolj
    Oct 7, 2025
  8. pasadena_commut

    Current by Power State and Option combinations

    pasadena_commut, Oct 6, 2025
    Replies:
    0
    Views:
    1,249
    pasadena_commut
    pasadena_commut
    Oct 6, 2025
  9. gen2prius

    Actuators and Blinkers Go Off When Door is Unlocked Keylessly

    gen2prius, May 14, 2025
    Replies:
    12
    Views:
    2,947
    gen2prius
    gen2prius
    Oct 1, 2025
  10. PapaDiZz

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

    PapaDiZz, Sep 13, 2025
    Replies:
    3
    Views:
    1,812
    PapaDiZz
    PapaDiZz
    Sep 26, 2025
  11. Duncwarw

    Urgent Help Needed!

    Duncwarw, Jul 8, 2025 ... 2
    Replies:
    34
    Views:
    5,597
    mr_guy_mann
    mr_guy_mann
    Sep 22, 2025
  12. donzoh1

    Upstream O2 Sensor removal

    donzoh1, Sep 21, 2025
    Replies:
    2
    Views:
    1,136
    mr_guy_mann
    mr_guy_mann
    Sep 22, 2025
  13. viciousthinker

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

    viciousthinker, Sep 20, 2025
    Replies:
    4
    Views:
    1,103
    Mendel Leisk
    Mendel Leisk
    Sep 20, 2025
  14. Freeport

    Gen 4 modules for Gen 2 pack

    Freeport, Jan 25, 2023
    Replies:
    19
    Views:
    4,563
    PriusCamper
    PriusCamper
    Sep 19, 2025
  15. donzoh1

    2008 has howling noise rear end

    donzoh1, Sep 17, 2025
    Replies:
    1
    Views:
    1,094
    pasadena_commut
    pasadena_commut
    Sep 18, 2025
  16. Eman123

    disable key fob due to stolen registration

    Eman123, Sep 10, 2025
    Replies:
    6
    Views:
    1,470
    Eman123
    Eman123
    Sep 16, 2025
  17. pasadena_commut

    "Mushy" transition from OFF to ACC

    pasadena_commut, Sep 16, 2025
    Replies:
    0
    Views:
    996
    pasadena_commut
    pasadena_commut
    Sep 16, 2025
  18. pasadena_commut

    Adding water to 12V battery

    pasadena_commut, Aug 5, 2025
    Replies:
    5
    Views:
    1,553
    pasadena_commut
    pasadena_commut
    Sep 13, 2025
  19. Tom600x

    Problem dash is completely dead and Ignition switch no lights

    Tom600x, Nov 15, 2020 ... 2
    Replies:
    24
    Views:
    25,526
    gdanner
    gdanner
    Sep 12, 2025
  20. J Conner

    How to know if control arm needs replacement?

    J Conner, Jan 26, 2019 ... 2
    Replies:
    20
    Views:
    13,211
    TBM
    TBM
    Sep 10, 2025
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