1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Dead Cruise Control on two day old Advanced.

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by iSequoia, Apr 21, 2017.

  1. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

    Joined:
    Nov 1, 2016
    11,801
    11,363
    0
    Location:
    Central Virginia
    Vehicle:
    Other Hybrid
    Model:
    XLE
    Prime has a 40 page "quick Reference, over half devoted to charging & related functions. This is on Page 30.
    upload_2017-4-24_15-50-25.png

    Apparently, there is some regenerative braking in B mode. Page 37.
    upload_2017-4-24_15-51-51.png
     
    #21 Prodigyplace, Apr 24, 2017
    Last edited by a moderator: Apr 24, 2017
  2. Captmiddy

    Captmiddy Active Member

    Joined:
    Dec 15, 2016
    225
    204
    1
    Location:
    Massachusetts
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    To say Toyota isn't good with interface design may be under selling how horrible they truly are. Ergonomics within Toyota's infotainment systems are almost to the point of non-existent. Honda's systems from 10 to 12 years ago, are better than Toyota's systems today. In my Ridgeline I can operate a lot of things just by touch without looking, that is nearly impossible with the Toyota. That said, for all the other things that the Prius is versus alternatives in the market, I would still pick the Toyota. They know how to build a car that does what it is supposed to do, the problem is all the bells and whistles just aren't well thought out add-ons. My car before this, a Camry Hybrid, we used the built in navigation about 3 times in the 9 years we owned the car. And I even, for some stupid reason, paid for one upgrade of the maps.
    I was hopeful that the Ford partnership would trickle into this version of the Prius to provide a better phone integration feature, but now I am thinking that also will not make it into this rev of the vehicle. Still love the car, not aware of another vehicle on the road I would trade it out for.
     
    bisco likes this.
  3. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

    Joined:
    Feb 14, 2010
    6,035
    3,855
    0
    Location:
    Rocky Mountains
    Vehicle:
    2006 Prius
    Model:
    Three
    Why is everyone so opposed to reading what the manufacturer told you to read??? All the info for these basics questions is there. It's not just a paperwight it is telling you what your multi-thousand pound road beast should and should not do. Most people spend more times looking at sport scores than reading the owners manual for one of the largest purchases of theirs that carries them at high speeds among other giant metal traps. There is no excuse for such ignorance. A large manual is not a problem. If you don't read it, fine. But don't complain when it wasn't more clearly labeled when it obviously was told to you in the manual.
     
  4. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,557
    10,324
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Wow, a 5X expansion in just 5 years, compared to my liftback's quick reference.
     
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,060
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    not sure anyone at toyota knows what b is for either.
     
    Mendel Leisk likes this.
  6. jaymac

    jaymac membore

    Joined:
    Feb 21, 2012
    179
    57
    0
    Location:
    Oregon ( Umpqua Valley )
    Vehicle:
    2013 Prius v wagon
    Model:
    Five
    On our gen 3 lift back the cruise control is non-functional if the front tires loose traction and slip. The cruise will not function until the car is turned off completely and then " re-booted "
     
  7. iSequoia

    iSequoia New Member

    Joined:
    Apr 21, 2017
    6
    4
    0
    Location:
    Marin, CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Advanced
    I see that the manual says that using B mode reduces milage. Does anyone know why it reduces milage? I haven't driven enough yet to do a test myself.
     
  8. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,060
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    b mode uses the engine to slow the car down to save the brake pads, coming down kilimanjaro. no need for that friction under normal driving circumstances.
     
    Mendel Leisk likes this.
  9. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,693
    39,238
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Operative word: Kilimanjaro.
     
    bisco likes this.
  10. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

    Joined:
    Nov 1, 2016
    11,801
    11,363
    0
    Location:
    Central Virginia
    Vehicle:
    Other Hybrid
    Model:
    XLE
    When using B mode the engine spins to slow down the car instead of using the motion to recharge the traction battery.
    Basically the energy is wasted in engine motion rather than heating up the friction brakes.
     
  11. CharlesH

    CharlesH CA HOV Decal #5 on former PiP

    Joined:
    Nov 27, 2005
    2,788
    1,153
    0
    Location:
    Roseville, CA
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    I could not even get all of the manuals into the glove compartment. I had to put one of them in the rear center compartment.
     
    bisco likes this.
  12. CharlesH

    CharlesH CA HOV Decal #5 on former PiP

    Joined:
    Nov 27, 2005
    2,788
    1,153
    0
    Location:
    Roseville, CA
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    In the Prime, B mode does not necessarily use engine braking. In EV + B mode, if there is remaining capacity in the battery, the system will enhance regeneration, exactly like pressing lightly on the brake pedal. Only when the battery gets full will it resort to engine braking.
     
  13. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,060
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i guess we cold go with denali, k2 or even pikes peak.:cool:
     
  14. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,060
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    can you give us a picture shot of the pip or prime o/m explaining this? thanks!
     
  15. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,557
    10,324
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    In HV mode, it will prevent auto-shutoff of the gasoline engine, thus wasting fuel. It also wastes some energy in engine compression braking that could otherwise be used for coasting, gliding, or regeneration back into the traction battery. So, in HV mode, don't use it in situations where the traction battery won't fill up and the friction brakes won't get overly hot. That is, unless you like it for other reasons and don't care about the MPG loss. It won't hurt the car, just MPG.

    EV mode considerations are different, and many of us with non-plugins won't be able to adequately guide you on B mode in your Prime.
     
  16. CharlesH

    CharlesH CA HOV Decal #5 on former PiP

    Joined:
    Nov 27, 2005
    2,788
    1,153
    0
    Location:
    Roseville, CA
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    I haven't dug through the manuals on this. I am just passing on reports from what people actually observed with their own cars. There was a lot of discussion about this in the first-generation PiP forum a couple of years ago. The observation was that in HV mode or when the battery was full or when going over the EV-only speed limit (62mph in the first-generation PiP), then engine braking occurred when using B mode. When in EV mode with remaining capacity and below the EV-only speed limit, then aggressive regeneration and no engine braking was observed in B mode.
     
    bisco likes this.
  17. drysider

    drysider Active Member

    Joined:
    Apr 14, 2008
    823
    332
    1
    Location:
    Liberty Lake WA
    Vehicle:
    2012 Prius
    Model:
    Four
    The Prime is a complicated car. I think you can expect the owners manual to reflect that. What, exactly, should Toyota leave out in order to make a smaller manual? If you want to get in and just drive, you can. If you want to maximize your mileage and understand the car, then you will have to read the manual and, perhaps, stay current on Prius Chat or some other online source. Plug-and-Play is getting harder and harder to come by. No pun intended.
     
    tanner9868 likes this.
  18. PT Guy

    PT Guy Senior Member

    Joined:
    Nov 23, 2016
    1,085
    711
    0
    Location:
    Washington, the state
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Advanced
    The 784 page owner's manual could be much better edited and better indexed. Most of what I want is in there, but it could be easier to find and to understand. There are pages and pages of stuff that seem like they're in there because of lawyers, not good technical writers.
     
  19. DavidA

    DavidA Prius owner since July 2009

    Joined:
    Jul 14, 2009
    2,329
    1,812
    18
    Location:
    Chicago western burbs
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    Get an electronic copy as a PDF. Searching is made much easier that way.
     
  20. bingee3

    bingee3 Active Member

    Joined:
    Aug 31, 2012
    171
    105
    0
    Location:
    Michigan
    Vehicle:
    2012 Prius
    Model:
    Two
    Other than going down a long steep hill , why would B ever be used ,, if left B while
    Driving on flat roads ,, wouldn't that hurt ones MPG ??