Another Rear Window Problem

I Have A 90 Runner, And The Keyhole In The Tailgate For The Rear Window Won't Turn At All, Also The Front Passenger Keyhole Won't Turn Either, Can Somebody Help Me?

I had a similar problem on a '92 Camry. Turned out that the key was too worn down to trip the tumblers. Got a new key made at the hardware store and it still wouldn't work. Finally got a new key from the dealer and the locks work fine. Hope this helps.