Hello
I have a class 70 with sound and F10 button is set for flange ,wheel squeal .
I believe it only works at slow speeds ,But mine will only work when i press f10 and then its works but only for a few seconds . I have read up that this could be f10 none latching .
So i press f10 sound come on then off on its own .
I want it to stay on at low speeds . so F10 press on ,Then i press F10 to turn off .
Any help how to do this please .
Thank you
Neil