Hey everyone,

I recently got an MM3 through my local tuner, I’ve had him tune several vehicles for me so I went to him for my truck, but he isn’t out of town so I don’t want to bother him if I can solve this here.

I have an MM3 and I tried the whistle tune, and now I can’t get it to turn off.

I’ve gone through the other three sound tunes I have and it stays on through all of them, including the power tunes.

Any solutions?