welcome to the werkz, well I can't claim to have the answers you need but first of all is the key remote lock working, try replaceing the battery it might be weak,it is a 98 who knows the last time someone changed it out . next I had a similar problem after my daughter used my car ,seemed the drivers side lock would not work although all the others did. what I did was cycle the locks on and off with the center consol switch and it started working. I'm not saying this will fix yours , but who knows.Up untill then I had never had one problem with the lock function. I would look in the diys for the window malfunction. Good luck.......