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Keeping your car doors locked is one important safeguard against auto theft and vandalism, but it can also backfire. For any of a variety of reasons, occasionally car keys won't turn in the door. There are a few reasons this can happen, but they are all solvable problems.
Power door locks are wonderfully convenient, as long as they work properly. When they do not work right, trying to pinpoint the problem can be frustrating if you are not educated on how the power lock system works. If you do understand the system, however, troubleshooting can be performed quickly. Additionally, if you are mechanically inclined, once you have pinpointed the problem, performing the repair should not take more than an hour, as long as you have the right tools and parts.