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

B--Engine braking

Discussion in 'Gen 2 Prius Main Forum' started by malibucarl, May 27, 2005.

  1. malibucarl

    malibucarl Member

    Joined:
    Apr 26, 2005
    237
    4
    0
    Location:
    Malibu, Ca
    Vehicle:
    2007 Prius
    Model:
    N/A
    Is it Ok to leave the "transmission" in B after the batteries are completely recharged ?? Typically on long downhill runs.
    The loud noise change has me wondering.
    Thanx,
    Carl
     
    #1 malibucarl, May 27, 2005
  2. coloradospringsprius

    coloradospringsprius Member

    Joined:
    Feb 25, 2005
    171
    0
    0
    Yes, long downhill runs are exactly what "B" is for. I've only used it once - descending a mountain pass in Colorado - but it was great; I hardly had to touch the brakes. Though like you, I found the noise disconcerting. The engine made more noise on the descent than on the ascent.
     
    #2 coloradospringsprius, May 27, 2005
  3. richard schumacher

    richard schumacher shortbus driver

    Joined:
    Mar 27, 2004
    7,663
    1,039
    0
    Location:
    United States
    Vehicle:
    2004 Prius
    Model:
    N/A
    But don't leave it in "B" when you're *not* going down a long hill; it will reduce your fuel economy.
     
    #3 richard schumacher, May 30, 2005
  4. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    44,944
    16,162
    41
    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Also, the engine will not shut off when you stop in B-mode
     
    #4 Tideland Prius, May 30, 2005
  5. malibucarl

    malibucarl Member

    Joined:
    Apr 26, 2005
    237
    4
    0
    Location:
    Malibu, Ca
    Vehicle:
    2007 Prius
    Model:
    N/A
    Thanx for the info.
    Carl
     
    #5 malibucarl, May 30, 2005
  6. V8Cobrakid

    V8Cobrakid Green Handyman

    Joined:
    Jun 6, 2004
    3,790
    152
    0
    Location:
    Park View, Los Angeles, CA. U.S.A
    Vehicle:
    2004 Prius
    Model:
    N/A
    B will never do harm to your engine. Like everyone else said, you can leave it in B, but it will reduce gas mileage. At stops it takes up electricity to keep the engine spinning. In some conditions the engine will run with fuel ( if stopped and in B mode ).

    I would have to say B mode is the most common questions. Even my parents ask me about it.. several times. The own the 400h.
     
    #6 V8Cobrakid, May 30, 2005
(You must log in or sign up to post here.)