Anyway to change outside temperature from Fahrenheit to Celsius?

Discussion in 'Prime Main Forum (2017-Current)' started by kortik, Dec 30, 2017.

  1. kortik

    kortik New Member

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    Any tricks to go from F to C. I am not used to Fahrenheit , Celsius makes more sense!
     
  2. Elektroingenieur

    Elektroingenieur Senior Member

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    Subtract 32, multiply by 5, divide by 9.

    More seriously, the consensus, at least in this thread about the fourth-generation liftback Prius, which has a combination meter similar to the one on the Prius Prime, is that there isn’t a convenient way to change the outside temperature display from °F to °C. It might be possible to replace the meter circuit plate with the Canadian or European version; I don’t know if these are otherwise compatible with U.S.-specification cars.
     
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  3. Prodigyplace

    Prodigyplace Senior Member

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    It would likely involve firmware changes too. In fact the difference may be only in the firmware to reduce stocking different meter circuit plates.
    Toyota does not release their firmware except as patches to dealers to address specific safety or reliability issues.
     
  4. bwilson4web

    bwilson4web i3 and Prime

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  5. Elektroingenieur

    Elektroingenieur Senior Member

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    It wouldn’t surprise me if there are only two versions of the hardware, for LHD and RHD vehicles, with the firmware loaded before the parts are distributed. There are different part numbers for the meter circuit plate in different markets, and I’d expect they come pre-loaded with the correct firmware. This avoids the need for dealers to do initial programming, which depending on the design, might have to be done over an interface like JTAG or I²C, rather than the CAN bus accessible to a Toyota Techstream diagnostic system in the field.
    Yes; that’s one reason I think the only alternative might be to buy the Canadian or European part. The hardware might be identical to the U.S. version, but it would have firmware that displays the temperature in the desired units, assuming it works at all.
     
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  6. Prodigyplace

    Prodigyplace Senior Member

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    Canada uses the same speed, economy, and temperature units as Europe. That is why the big fuss over the early 2016 Prius that would not display Km/h. Toyota has said the only solution was to replace the car.
     
  7. Sid786

    Sid786 Active Member

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    Yes, unit conversion from F to C is an option and it was one of my query to one of the sales person, who showed me. It is buried in the settings.
     
  8. Tideland Prius

    Tideland Prius Moderator of the North
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    -40°C = -40°F
    -35°C = -31°F
    -30°C = -22°F
    -25°C = -13°F
    -20°C = -4°F
    -18°C = 0°F
    -15°C = 5°F
    -10°C = 14°F
    -5°C = 23°F
    0°C = 32°F
    3°C = 38°F (OAT display blinks at 37°F)
    5°C = 41°F
    10°C = 50°F
    15°C = 59°F
    20°C = 68°F
    25°C = 77°F
    30°C = 84°F
    35°C = 95°F
    38°C = 100°F
    40°C = 104°F


    Print and attach to dashboard :p

    Alternatively, just remember that 10°C = 50°F and add/subtract 9°F for every 5°C change in temperature.
     
    #8 Tideland Prius, Jan 2, 2018
    Last edited: Jan 2, 2018
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  9. Prodigyplace

    Prodigyplace Senior Member

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    In the US the temperature blinks at 37. I have sometimes seen it blink below that.

    I think you meant 10C equals 50 F.
     
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  10. kortik

    kortik New Member

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    why does it blink? at 37F?
     
  11. bwilson4web

    bwilson4web i3 and Prime

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    To trigger a cryogenic epileptic event?

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  12. stevepea

    stevepea Senior Member

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    For our International Members.. Look out the windscreen, and if the two egg yolks you placed on the bonnet begin sizzling, you know it's hot. If it turns into a small, white frisbee, it's time for the heater.

    All kidding aside, I hear you. It's little things like this that don't make sense. I recently posted wondering why you can set the dash clock to either 12hr or 24hr format -- but the nav clock only displays 12hr format. So yes, some things just don't make sense.
     
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  13. Tideland Prius

    Tideland Prius Moderator of the North
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    That's the air temperature at which black ice could form.

    Air temperature is taken at 2 metres above the surface as the international standard so that means it could be freezing or just below on the road surface. It's a reminder that just because it's above freezing, doesn't mean there isn't ice on the road.
     
  14. Prodigyplace

    Prodigyplace Senior Member

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    Mine actually blinked at 32 yesterday

    BTW when I wondered about the blinking I referred to the electronic version of the paper documentation you received with your car.
    The manuals are not just supplied for added ballast or packing. They actually contain useful information about your vehicle.
     
  15. Tideland Prius

    Tideland Prius Moderator of the North
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    Doesn't it blink at any temperature below 37?

    In the Gen 2, it did... well that and you had the yellow/amber icon (road/snowflake) on all winter.
     
  16. huskers

    huskers Senior Member

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    It likes you.

    Or it warns you that black ice may form soon.
     
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  17. Prodigyplace

    Prodigyplace Senior Member

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    I thought it was to get you to read the manual.
     
  18. UltraJetRefill

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    Is this true? Is this only for the Prime? I can't seem to find it in the settings of my Two.
     
  19. citiprius

    citiprius Active Member

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    Don't do that, it will be colder outside once you change form F to C. Instead of 10, it will be -12, much colder :p
     
  20. virgoboi

    virgoboi Junior Member

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    IMG_8049.jpeg
    The Fahrenheit thing is driving me nuts. I think they did this on some of the units to drive the 7.4 billion of us metric system users crazy! Has ANYONE found a fix for this for real though? :ROFLMAO: And one that doesn't involve SARCASM? :mad:
     
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