Window switch light up but windows won’t roll down.

Hello, you could have a wiring issue or a master switch issue. Testing the circuits in the driver's door at the switch would be a good first step. Guessing at replacing the master switch is not a great idea, because it could be a big waste of money. Based on the switch lighting and not lighting at the opposite times, it sounds like you may have a wiring concern. All of this is a wild guess - so seek professional guidance near you. www.repairpal.com/repair-shops