hello everyone,

I am a new HUMMER H3 owner from france.

I am wondering if anybody knows how to shift from °F to °C in the mirror display.they said to press the on/off button to cycle from °F to °C but ... it does not work.[:@]

thanks to all.

 

Hey Jmm, WELCOME

I don't know if the H3's have steering wheel controls??? But on my H2, you can change from imperial to metric from there!!

 

What you do is push the power button on the mirror to turn it off. Then push it again and it will come on but hold it in for a few seconds. The temp will begin to flash, and then release the button. Push it again and the temp will change to Celcius. After a few second, it will stop flashing and you are good to go.