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2001 prius service mode affects mpg

Discussion in 'Gen 2 Prius Technical Discussion' started by statultra, Jun 16, 2006.

  1. statultra

    statultra uber-Senior Member

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    you know those secret buttons in the display, audio thing to get into service mode, well i noticed when i leave it in service mode and drive the vehicle my gas mileage goes up sky high, resulting in 99 mpg for well forever.
     
    #1 statultra, Jun 16, 2006
  2. tumbleweed

    tumbleweed Senior Member

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    So apparently it doesn't measure fuel flow when it's in the service mode? Or perhaps the software just doesn't compute mileage in that mode?

    I have had mine in the service (or maintenance) mode a couple of times just to see if I could but I have never driven it that way.
     
    #2 tumbleweed, Jun 16, 2006
  3. tochatihu

    tochatihu Senior Member

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    do not know about the mpg calcs, but we are advised not to drive that way because the drivetrain is not protected against (damaging) overspeed in case you get one front wheel spinning.

    Or maybe you were trying to get unstuck from sand??
     
    #3 tochatihu, Jun 16, 2006
  4. statultra

    statultra uber-Senior Member

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    this is not the inspection mode as outlined in the manual that turns off the motor TRAC function. This service mode is on the MFD where it checks gateway ecu, navi, etc. I noticed that when its on this function it seemingly reads 99 mpg or i believe more while driving. ( maybe )
     
    #4 statultra, Jun 16, 2006
  5. tochatihu

    tochatihu Senior Member

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    Now I understand. Please excuse the error.

    This may be a good hint for the next mpg rally: "99.9 mpg - I win."
     
    #5 tochatihu, Jun 17, 2006
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