just take the right top cap of with a 24mm socket(i think) ,empty the oil and put 130mm of 5wt(i use 7.5wt and it works well) in(check the rockshox site for oil levels im pretty sure thats right). Put the top cap on and see if it works ,if it still doesn't work put another 5-10ml in,i measured out the oil, put it back together and the lockout had stopped working, i put a little more in and it worked again
If its remote lockout you don't need to take off the adjuster and it just unscrews normally, you dont need to put it back on super tight ,just nicely snugg