[tang]

It can be done through the car's speedometer/computer if you have it. I don't know whether Mazda Tributes came with the info-setup-reset buttons that Fords and Mercurys do.

 

[tang]

For my Escape, there's a way to do it through the dashboard. I wonder if there's a key button pressing method. I will look it up and tell if you if I find anything.

 

[tang]

you would have to get the upgraded speedometer too if you did...