sounds like the rear door are stuck in double lock mode. i had the same problem, i removed the rear seat and door sill trim. Next I removed the rubber seal around the door as much as possible. this is the only way to remove the door panel with the door still locked..slide a long flat rod down the inside of the panel to help pop out as many plugs as you can. now from the outside, reach in and pull up on the door panel and remove it. now you can access the door lock actuator.