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B Mode - ICE never shuts down when car is not moving

Discussion in 'Gen 3 Prius Main Forum' started by co_prius_3, May 9, 2014.

  1. co_prius_3

    co_prius_3 Member

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    Location:
    Colorado, USA
    Vehicle:
    2011 Prius
    Model:
    Two
    I've been experimenting with 'B' mode while commuting. While stopped at a light, the ICE never shuts down. Is that normal? It seems like it should, regardless of the drive mode. The ICE was fully warmed up (190 F). I believe the battery was fully charged, as well. It tends to stay charged while in B mode.

    If I switch from Drive to B while stopped at a light, the ICE stays off until the car starts moving. But if it was in B mode already, it never shuts down when the car is stopped.
     
    #1 co_prius_3, May 9, 2014
  2. peterjmc

    peterjmc Ping pong in Ding Dang...

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    2012 Prius Plug-in
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    Plug-in Advanced
    The ICE will stay on with B mode on during a stop. B mode uses engine braking to slow the car down.
     
    #2 peterjmc, May 9, 2014
  3. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    Three
    B mode, which is required by Federal law, is only useful when descending large mountain passes.

    http://www.gpo.gov/fdsys/pkg/CFR-2011-title49-vol6/pdf/CFR-2011-title49-vol6-sec571-102.pdf

    (As implemented by Toyota, there is no maximum speed for B, it just gets lower MPG than D)
     
    #3 JimboPalmer, May 9, 2014
  4. bisco

    bisco cookie crumbler

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    b mode is a bad job.
     
    #4 bisco, May 10, 2014
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