Laser module won't switch to Precise mode just stays in Normal mode

When I press the button on the laser head it won’t switch into the 22w precision mode. I have to cut/engrave everything at the full 40w setting and I don’t need that all the time. Has anyone else experienced the same?

You need to press the button for 3-4 seconds for it to change.

Thank you. I have tried that and no matter how long I hold it down it does not switch the modes. I don’t know if the button has gone bad. I have updated the firmware, taken the laser module apart and cleaned it out well but it still doesn’t respond.