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I have a 1999 ford explorer sport. I have always had a bit of difficulty with the locks, but it has always worked. Recently, The driver's side door lock will not turn all the way to unlock itself, though it will unlock everything else with the power lock system. It almost feels like its getting stuck on something but I don't know how to check that. If I pull the handle on the inside, after about 2 pulls, it'll open, but otherwise no. The outside handle feels much looser than it used to as well. I can also sometimes get the outside lock to open if the door isn't closed. What could this be? Is this something I will have to completely replace the lock for? And if I do have to replace the lock, does that mean getting a new key made with the electronics part that makes it skyrocket in cost?

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  • Welcome to Motor Vehicle Maintenance & Repair! If you're talking about the key lock, have you tried shooting a little bit of WD40 or graphite into the keyhole? Feb 12 '19 at 2:39
  • They also make "lock grease", specifically designed to be used on locks. It comes in a little spray bottle. I use it a couple times a year. It doesn't attract dust and dirt like wd40 does.
    – sam
    Feb 12 '19 at 23:36
  • And when you say The driver's side door lock will not turn all the way, do you mean the key does not rotate all the way?
    – sam
    Feb 12 '19 at 23:37
  • The lock will not turn all the way on one side. It feel like its stuck on something. I have tried wd-40 in the locks and it did not help the driver side. In fact, this actually fixed my passenger side door.
    – tdat314
    Feb 15 '19 at 21:22

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