Mike L

hi, I'm not familiar with fahrenheit so that I wanna change it to celsius. but I have no idea how to change it. For camry, I just pushed the button for 3 seconds then it was changed. Is there any solution for this? help me. thanks.. ^^ ps. other vehicles (small white & red dot) are on the navigation. It's so annoying. How can I remove it? (I tried to command "hide all icons", but it doens't work.) thanks.