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Temp Display went Metric for a While

Discussion in 'Gen 2 Prius Technical Discussion' started by TonyPSchaefer, Feb 12, 2010.

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  1. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
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    I have three threads indicating that it is not possible to change the temp display from F to C. At least, not intentionally. Yesterday, When I started up Priapus, I noticed that it was -2ºC instead of 28ºF.

    http://priuschat.com/forums/gen-ii-...ay-changed-celsius-fahrenheit-2008-prius.html
    http://priuschat.com/forums/gen-ii-prius-main-forum/42957-converting-metric-display.html
    http://priuschat.com/forums/gen-ii-prius-technical-discussion/36889-us-metric.html

    For those who don't know, the sheep is my way of marking the picture as mine. As in, I didn't search the internet for it and when you see it posted on another forum you'll know where it came from.
     

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    #1 TonyPSchaefer, Feb 12, 2010
  2. dogfriend

    dogfriend Human - Animal Hybrid

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    I'm sorry, what was the problem again? I was distracted by the sheep. :madgrin:
     
    #2 dogfriend, Feb 12, 2010
  3. Tideland Prius

    Tideland Prius Moderator of the North
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    It was messing with you, hoping you'd think it's -2F outside.
     
    #3 Tideland Prius, Feb 12, 2010
  4. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
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    So is it just me? This isn't the first time this has happened but the first time I was able to grab a picture.

    Doesn't anyone else think this is odd?
     
    #4 TonyPSchaefer, Feb 12, 2010
  5. patsparks

    patsparks An Aussie perspective

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    How good is that? You Prius knows metric is better than imperial measurements. Unfortunately the MPG display is a bit slow to catch on.
     
    #5 patsparks, Feb 12, 2010
  6. hyo silver

    hyo silver Awaaaaay

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    I don't see a problem with the temperature display either. :D
     
    #6 hyo silver, Feb 12, 2010
  7. Rae Vynn

    Rae Vynn Artist In Residence

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    Personally, I think it's a baaaaaaaaaaaaaad thing.
     
    #7 Rae Vynn, Feb 12, 2010
  8. Patrick Wong

    Patrick Wong DIY Enthusiast

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    This is quite odd. I take it that the display is switching back and forth on its own?

    I posted 12V battery photos on one of the Yahoo Prius groups as well as on PriusChat. I recently noticed a Russian Prius website poster "borrowed" a photo. Once it's in the public domain, who knows where a photo might travel.
     
    #8 Patrick Wong, Feb 12, 2010
  9. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
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    The sheep was introduced in reply to a photo I posted a couple years ago. Some loudmouthed newbie was arguing that the Prius was incapable of mileage above 60mpg because he was incapable of it himself. I posted a picture of my 73.3mpg tank. His reply was to accuse me of finding that image on the internet and claiming it as my own.
     
    #9 TonyPSchaefer, Feb 12, 2010
  10. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Back to your issue of C vs. F temp display. My guess is that the MFD has a soldered jumper on a circuit board that enables F temp display (with default being a C display). The connection is intermittent, which allows you to see a C display from time to time.

    This is good news: Your Prius' market value can only increase, as it has become a unique vehicle equipped with this unusual feature! :rolleyes:
     
    #10 Patrick Wong, Feb 13, 2010
  11. Tideland Prius

    Tideland Prius Moderator of the North
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    Guess mine's a permanent bug, tony ;). no I've never had it switch to fahrenheit. Do note that the temperature display is calculated in celsius (that's why it skips certain numbers in fahrenheit)
     
    #11 Tideland Prius, Feb 14, 2010
  12. GrumpyCabbie

    GrumpyCabbie Senior Member

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    Isn't it just programmed in to display F in the US and C everywhere else? Is it something the dealer can change when they plug their computer in?

    I'm not a great fan of metric but the one metric measurement that really does make sense is Celsius. We used F here until the early 1980's and some people often use F in summer and C in winter. I suppose it's what you get used to.
     
    #12 GrumpyCabbie, Feb 14, 2010
  13. Tom Banjo

    Tom Banjo New Member

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    Maybe outdoors it is F sometime and C other times, so it is just reporting the actual temperature.

    J/K ... it does sound like an intermitant connection ....
     
    #13 Tom Banjo, Feb 14, 2010
  14. TonyPSchaefer

    TonyPSchaefer Your Friendly Moderator
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    It just occurred to me that some of the temperature sensors we make (where I work) have physical resisters that determine the temperature scale. To switch from F to C is a simply matter of snipping the wire thus removing the resister. This triggers the switch.

    Does anyone have a wiring schematic that might show something similar.
     
    #14 TonyPSchaefer, Feb 14, 2010
  15. 2009Prius

    2009Prius A Wimpy DIYer

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    A related question. Does everyone see the drop down banner across the entire width of the MFD (at the top) announcing the outside T being 37 F?
     
    #15 2009Prius, Feb 15, 2010
  16. Rae Vynn

    Rae Vynn Artist In Residence

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    Yes. The 'snowflake' graphic reminds me strongly of the aliens featured in the Outer Limits episode, "Behold, Eck!"

    That's my usual response when I see it.... behold, Eck!
     
    #16 Rae Vynn, Feb 15, 2010
  17. Tideland Prius

    Tideland Prius Moderator of the North
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    snowflake symbol. On 2004-2005 models, we got that AND the snowflake icon on the dashboard.
     
    #17 Tideland Prius, Feb 15, 2010
  18. BAllanJ

    BAllanJ Active Member

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    I thought we didn't get the snowflake icon in Canada.... I didn't.... I guess only in the 2010?
     
    #18 BAllanJ, Feb 15, 2010
  19. vertex

    vertex Active Member

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    I get the 37 degree message, no snow flake, 2006
     
    #19 vertex, Feb 15, 2010
  20. Tideland Prius

    Tideland Prius Moderator of the North
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    2004 and 2005 models only.
     
    #20 Tideland Prius, Feb 15, 2010
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