Overdrive button/light

For the past five months or so I noticed that my overdrive button may not be workin. Any idea of what could cause this and the fix for it. I guess I'm sayin I can't turn off the overdrive. It ain't essential since I don't tow very often and when I do it's a light atv trailer to the local pit. Btw the light don't come on on the dash. That why I say Its the swtich.

Thank you
Trevor


Thank you
Trevor

Your tow haul button? I remeber Nathan saying just to replace the switch.