Hi, I'm new here but have been a lincoln town car owner for years. I use to have a 93 signature that was recently totaled in an accident. I'm looking to buy a 97 executive but the passenger door electronic lock does not work. In other words, when I press the unlock button on the remote in inside the car, it will not unlock. How expensive, worst case and best case, would it be to fix this. I just want to get an idea before I buy this car.