I sometimes have this
problem but this is how I seem to fix it don't know if it's the right way but
find a way so it doesn't come back down and once it's stoped
hold the switch up for about to seconds and whilst holding it take the key out the ignition
And from the on that stoped it for me.
But as I say I dint think it's the right way but it works
I know some people suffer from this as well so they might have another way
Good luck