Power window will not go up.Window
 

My Hyundai I10 2012 . for ages the passenger window would not go up. it would go down and it would go up and down when using the drivers side switch. However i decided to fix it. First took the switch off. Then carefully took switch apart. saw the contacts were black. light polish with emery and then put back together. Tested and i was over the moon that i fixed it.