Prime Technical Discussion

Here you can discuss the technical ins and outs of the Prius Prime and related Plug-in hybrid components.

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  1. Sticky Threads
  2. priuscatprimeguy
    Sticky

    How does the heat pump work in a Toyota Prius Prime plug-in hybrid?

    priuscatprimeguy, May 24, 2017 ... 2 3
    Replies:
    46
    Views:
    61,664
    lech auto air conditionin
    lech auto air conditionin
    Oct 29, 2022
  3. bwilson4web
    Sticky

    Weber State University does P610 deep dive

    bwilson4web, Jun 15, 2017 ... 2
    Replies:
    38
    Views:
    35,272
    jerrymildred
    jerrymildred
    Sep 6, 2020
  4. erikrocketman1
    Sticky

    Prius Prime Regeneration Braking Efficiency Experiment

    erikrocketman1, Jun 1, 2018
    Replies:
    17
    Views:
    26,959
    JimLudden
    JimLudden
    Apr 13, 2026 at 11:28 AM
  5. iregret
    Sticky

    2017 Prius Prime Steering Ratio. What is it?

    iregret, Apr 24, 2018
    Replies:
    9
    Views:
    16,004
    Silas Wentworth
    Silas Wentworth
    Apr 28, 2025
  6. vomwezogi
    Sticky

    Traction battery indicator breakdown

    vomwezogi, Oct 3, 2023
    Replies:
    15
    Views:
    5,796
    Gokhan
    Gokhan
    Aug 30, 2025
  7. Normal Threads
  8. CEJ

    MPG in Hybrid Mode

    CEJ, May 13, 2019 ... 17 18 19
    Replies:
    379
    Views:
    263,170
    vvillovv
    vvillovv
    Feb 10, 2023
  9. john1701a

    Prius Prime: detail about Charge-Mode

    john1701a, Oct 20, 2018 ... 5 6 7
    Replies:
    122
    Views:
    157,459
    vvillovv
    vvillovv
    Oct 30, 2023
  10. Robyn Jackey

    12V Battery open voltage low?

    Robyn Jackey, Sep 29, 2017 ... 2
    Replies:
    33
    Views:
    141,082
    Andyprius1
    Andyprius1
    Nov 18, 2017
  11. Krzysiek_KTA

    Most decent way to run your 115V essentials out of Prius Prime

    Krzysiek_KTA, Jun 7, 2020 ... 6 7 8
    Replies:
    143
    Views:
    112,260
    vertex
    vertex
    Jul 15, 2022
  12. john1701a

    Charge-Mode for Prius Prime

    john1701a, Aug 9, 2017 ... 2
    Replies:
    34
    Views:
    102,113
    Larry F.
    Larry F.
    Mar 28, 2018
  13. jungleland1972

    Newby battery question - EV battery and front engine battery and nothing else?

    jungleland1972, Sep 11, 2017 ... 2
    Replies:
    27
    Views:
    73,387
    benagi
    benagi
    Nov 20, 2017
  14. mr88cet

    No, It’s Real: EV Range Down

    mr88cet, Jul 12, 2018 ... 6 7 8
    Replies:
    153
    Views:
    70,725
    Tideland Prius
    Tideland Prius
    Jun 24, 2019
  15. GT4Prius

    Prime may start ICE in EV mode if Windshield Defogger switched on

    GT4Prius, Nov 6, 2016 ... 4 5 6
    Replies:
    102
    Views:
    63,524
    pasta4breakfast
    pasta4breakfast
    Nov 27, 2022
  16. SR-71

    Catalytic Converter Protector

    SR-71, Mar 14, 2022 ... 2 3 4
    Replies:
    71
    Views:
    59,361
    jerrymildred
    jerrymildred
    Jun 23, 2023
  17. Insirt

    Regenerative Braking Details?

    Insirt, Jan 16, 2017 ... 3 4 5
    Replies:
    83
    Views:
    57,306
    ChapmanF
    ChapmanF
    Oct 5, 2021
  18. Salamander_King

    Can using CHG Mode be more efficient?

    Salamander_King, Oct 8, 2021 ... 6 7 8
    Replies:
    141
    Views:
    57,281
    Salamander_King
    Salamander_King
    Dec 6, 2021
  19. ED23LL

    Issue: Depress Brake Pedal and Push Power Switch to Start

    ED23LL, Dec 12, 2017
    Replies:
    17
    Views:
    55,481
    bisco
    bisco
    Jan 15, 2022
  20. mczouav

    Rear wheel camber adjustment on prime keeps getting off

    mczouav, Sep 6, 2018 ... 2 3
    Replies:
    49
    Views:
    55,377
    Shaunius
    Shaunius
    Sep 21, 2022
  21. yoyoman

    Coolant level low

    yoyoman, Jul 27, 2019 ... 2
    Replies:
    35
    Views:
    49,659
    Gokhan
    Gokhan
    Aug 27, 2022
  22. Can Doan

    2018 Prius Prime EV battery problem

    Can Doan, Aug 15, 2021 ... 2 3
    Replies:
    47
    Views:
    48,231
    jerrymildred
    jerrymildred
    Apr 11, 2023
  23. Yukyae

    Battery voltage of my prius prime advanced after 1 month

    Yukyae, Apr 13, 2017 ... 2
    Replies:
    27
    Views:
    44,761
    Andyprius1
    Andyprius1
    Nov 26, 2017
  24. Prius Primer

    Prius Prime Advanced, car lower battery mileage suddenly?

    Prius Primer, Jan 11, 2018 ... 2 3
    Replies:
    59
    Views:
    43,216
    jerrymildred
    jerrymildred
    Mar 19, 2020
  25. Bobenhaus

    ALL EV Modes explained

    Bobenhaus, Sep 4, 2017 ... 2 3
    Replies:
    52
    Views:
    43,023
    Andyprius1
    Andyprius1
    Oct 21, 2017
  26. Gaëtan Lafrance

    B mode: What is the advantage to use B mode when driving, more regeneration? more economy?

    Gaëtan Lafrance, Jul 5, 2018 ... 4 5 6
    Replies:
    104
    Views:
    42,296
    axle2152
    axle2152
    Oct 9, 2018
  27. sonomac

    Inside fuse panel location

    sonomac, Jan 19, 2017
    Replies:
    10
    Views:
    42,200
    POSPrius
    POSPrius
    Jan 4, 2021
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