Switch on the ignition and between 1.5 and 4 seconds hold the mode button for over 10 seconds you should see the lcd change and it will come up with code and a 0 the numbers will change by themselfs when u get to the right number press mode enter the code 423 and the first thing u should see is sel kmh and you have to hold the mode button for just over 3 seconds and it will change to mhp then switch off the ignition and there you go

Yh you have to select a certian mode and put in a code or something like that i got told in a shop i got mine from so if u have a booklet or a shop near you they would probly do it for free but i THINK you need a code