How do you change temperatures from fraenheight to celcius as we have no booklet on it

Have you Googled it? Some examples on YouTube

Best to just keep a conversion chart nearby...or label your gauge with Celcius...

The stock settings on your car are meant to show temperatures in Fahrenheit. To change it to Celsius press and hold the up and down buttons together, and that will change the temperature display. If you want to go back to Fahrenheit, do the same process.

On the Luxpro PSD111, Farenheit or Celcius are selected using the Jumper Switch J2 on the rear of the unit's circuit board:
Open = Celcius
Closed = Farenheit

found this

Read more: How to Change Ford Focus Temperature Display to Celsius ' eHow.com http://www.ehow.com/how_5989096_change-focus-temperature-display-celsius.html#ixzz2Nd8mOf00

Scroll through the digital display used to display trip distance, until it displays the outdoor air temperature.
Read more: How to Change Ford Focus Temperature Display to Celsius ' eHow.com http://www.ehow.com/how_5989096_change-focus-temperature-display-celsius.html#ixzz2Nd8mOf00

You can use a fahrenheit to celsius converter on this WEB site.
http://www.metric-conversions.org/temperature/fahrenheit-to-celsius.htm

A subtropical species used to a water temperature of 18-25°C In that case fish in the artic region can suvive even colder temperatures that -6 degrees celcius

just push and hold button and it should ask you what you want to do if that does not work refer to manual or call a toyota dealer and ask