Display shows centigrade not Farenheit and other problems

Does the dealership know what they are doing? Without knowing more details, it may be a good guess that maybe the dealership isn't quite as knowledgeable as others. They installed the MFD a second time and it still showed temperature in metric? Did they just give it back to you and called it "good as fixed"?

 

Centigrade has not been used since the late 1940s. In the SI ("metric") and US system of measurement, temperature is measured in degrees Celsius. The US is a metric nation whether most people realize it or not (money, videos, computers, cars, paper, guns, skis, soft and hard drinks, etc.). Be thankful, that as with your Prius, you are ahead of the curve. To visualize and create a mental map, remember:

30's hot
20's nice
10's cold
Zero's ice

 

Centigrade has not been used since the late 1940s. In the SI ("metric") and US system of measurement, temperature is measured in degrees Celsius. The US is a metric nation whether most people realize it or not (money, videos, computers, cars, paper, guns, skis, soft and hard drinks, etc.). Be thankful, that as with your Prius, you are ahead of the curve. To visualize and create a mental map, remember:

30's hot
20's nice
10's cold
Zero's ice

 

well if the new screen didn't fix it, sounds like it's time to try something else.

hubby has been extremely busy lately (sigh) but i can see if i can get some ideas from him tonight.

 

I don't see how it can be anything but the display. Especially with the graduated color, though that could be the background 'wallpaper'. It does sound as if they installed the same display, either intentionally or accidentally.
But perhaps a power reset might be in order. Try disconnecting the 12V battery for a while. A bit drastic, as you lose all your presets (but not any of the NAV settings I believe) but that's a small price to pay.

 

isnt there a way to change from Celsius to Fahrenheit? seems to me that was user settable. might want to check atilla's web site.

 

<div class='quotetop'>QUOTE(RobinJM @ Nov 23 2006, 11:42 AM) [snapback]353498[/snapback]</div>

http://www.vassfamily.net/ToyotaPrius/

 

well i looked and at a glance it looks like changing the temp scale isnt an option on the secret screens. sorry bout that. didnt mean to lead ya on. still a nice site to visit. lots of good info

 

It might be one of the country settings. There's a 2nd level screen that is reached by doing the taillight flash sequence a 2nd time.

 

I posted this in November 2005. I had the same problem and first had the MFD replaced. The correct solution was to have the AC ECU (the air conditioner computer) replaced (as suggested by DanMan32 who apparently forgot his good advice to me!) Note the part number I cite. It fixed it!

By the way: you could have found this by searching for Celsius!


Here's the link to that discussion, but the following should be sufficient to solve your problem.

http://priuschat.com/index.php?showtopic=1...&hl=celsius
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Replace the AC ECU (air conditioner electronic computer unit?) also known as the air conditioner amplifier. The techs are unlikely to have seen this problem, but I had it and someone on priusonline.com had it as well. The replacement of the AC ECU fixed it. (The replacement of the MFD [Multifunction Display] did not.)

Here's my experience.

I posted the following on priuschat.com in March. I made an original posting in September of last year:

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I have had a problem which I thought appeared after the SSC-40D reprogramming. I described it here in September in a discussion about Celsius versus Fahrenheit display:

Sometimes (seemingly at random) upon starting the car up, the outside temperature in the upper right of the screen comes up in Celsius even though the ODO is set to miles.

A workaround for what is clearly a bug is to select the "Climate" display. The Outside temperature will be on the upper left, still in Celsius. However, if you push the "Climate" button again, you will get the Energy Monitor display with the Outside temperature in Fahrenheit.

When this happens, the internal temperature is reset to 75 degrees Fahrenheit and must be reset by hand.

After seeing the recent descriptions of the problems with the Multifunction Display (MFD) resulting in TSB EL002-05, I demonstrated the problem at my dealer. They ordered a new MFD (which arrived in three days) and replaced the MFD. See TSB on Multifunction Display - EL002-05 (http://www.priuschat.com/forums/viewtopic.php?t=6549 )

My dealer did an excellent job: no rattles or scratches. I now have the added functionality of being able to toggle the Energy and Consumption screens via the steering wheel info button.

Unfortunately, last night (one day after the switch) the screen came up in Celsius again.

Thus it probably was not the MFD (which probably cost Toyota a bundle to replace.)

Any ideas?

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Clearly parameter ram is not being maintained. I have not brought my car back to the dealer (Stevens Creek Toyota) since everything else is working, but my 20,000 mile service is coming up, and would like to have this fixed.

DanMan32 said the following:

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[***]

Anyway, if it wasn't the MFD, then it may be the AC amplifier AKA AC ECU.

What they could try first is reset/toggle the AC customizable configurations. Sometimes toggleing things back and forth fixes little glitches like this.

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Someone else on priusonline.com had a similar problem with a similar solution.

After calling Toyota, the dealer indeed replaced the AC ECU (air conditioner electronic computer unit.) I haven't had the problem since September.

On the invoice for the warranty repair, the part that was replaced is listed as FP Number 88650-47050 Amplifier Assy. A.