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. Britprius

    Re-hydrating the battery modules.

    Britprius, May 6, 2015 ... 23 24 25
    Replies:
    480
    Views:
    223,045
    T1 Terry
    T1 Terry
    Aug 6, 2025
  2. Dale I

    fuel tank EVAP lines

    Dale I, Jul 22, 2025 ... 2
    Replies:
    23
    Views:
    1,383
    Dale I
    Dale I
    Aug 4, 2025
  3. Bitsandbytes

    What is this wire for? P0A4C and P0A4D codes and mice chewing

    Bitsandbytes, Jul 29, 2023
    Replies:
    7
    Views:
    5,367
    James Analytic
    James Analytic
    Jul 31, 2025
  4. Alvie johnson

    Need help on my 2009 toyota prius

    Alvie johnson, Jul 28, 2025
    Replies:
    8
    Views:
    669
    Alvie johnson
    Alvie johnson
    Jul 31, 2025
  5. speedway dave

    Why is my hybrid battery draining?

    speedway dave, Jul 8, 2025
    Replies:
    12
    Views:
    867
    speedway dave
    speedway dave
    Jul 29, 2025
  6. squidster

    2007 Prius - Key Fob not unlocking

    squidster, Jul 24, 2025
    Replies:
    0
    Views:
    313
    squidster
    squidster
    Jul 24, 2025
  7. John Capel

    HID to Halogen/LED Conversion

    John Capel, Jul 18, 2025
    Replies:
    1
    Views:
    510
    ebikeman
    ebikeman
    Jul 23, 2025
  8. rkoska

    Emergency Shift lock override

    rkoska, Feb 5, 2007 ... 2
    Replies:
    34
    Views:
    61,748
    ChapmanF
    ChapmanF
    Jul 21, 2025
  9. prius_newb66

    which direction are the drum brake ratchets intended to turn?

    prius_newb66, Feb 18, 2024 ... 2
    Replies:
    24
    Views:
    3,055
    Tombukt2
    Tombukt2
    Jul 21, 2025
  10. Banksy

    How can I test the hybrid battery fan to see if it's working properly?

    Banksy, Apr 5, 2020
    Replies:
    14
    Views:
    16,868
    pasadena_commut
    pasadena_commut
    Jul 20, 2025
  11. Ed480

    2008 Prius water pump

    Ed480, Jul 18, 2025
    Replies:
    2
    Views:
    445
    Tombukt2
    Tombukt2
    Jul 18, 2025
  12. Tyler Pryjda

    Reviewing & Preparing for ABS Replacement

    Tyler Pryjda, Jun 18, 2025
    Replies:
    2
    Views:
    862
    Tyler Pryjda
    Tyler Pryjda
    Jul 18, 2025
  13. repnatl

    How to convert from hid to halogen

    repnatl, Aug 11, 2017 ... 3 4 5
    Replies:
    88
    Views:
    68,437
    Tombukt2
    Tombukt2
    Jul 15, 2025
  14. Genevos

    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    Genevos, Dec 7, 2022 ... 2
    Replies:
    39
    Views:
    9,252
    amitt
    amitt
    Jul 14, 2025
  15. Tombukt2

    autel ap200

    Tombukt2, May 17, 2024 ... 2
    Replies:
    25
    Views:
    4,298
    pasadena_commut
    pasadena_commut
    Jul 11, 2025
  16. JeffAnd

    2004 Prius Check engine light on. EVAP P0446

    JeffAnd, Jun 18, 2025
    Replies:
    16
    Views:
    1,206
    JeffAnd
    JeffAnd
    Jul 10, 2025
  17. Tombukt2

    AC on and off

    Tombukt2, Jul 8, 2025
    Replies:
    4
    Views:
    524
    AzWxGuy
    AzWxGuy
    Jul 9, 2025
  18. TMR-JWAP

    C1256/1391--anyone ever try using DOT4 brake fluid?

    TMR-JWAP, Feb 8, 2021 ... 2 3
    Replies:
    59
    Views:
    18,687
    dolj
    dolj
    Jul 7, 2025
  19. pasadena_commut

    Force ICE to start before SOC bars purple when A/C on?

    pasadena_commut, Jul 5, 2025
    Replies:
    14
    Views:
    806
    pasadena_commut
    pasadena_commut
    Jul 7, 2025
  20. ToySup

    Rear hatch won't open with car running

    ToySup, Oct 17, 2012
    Replies:
    11
    Views:
    4,367
    Marty2go
    Marty2go
    Jul 4, 2025
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