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Car Door Locks Repair If it's a manual lock that isn't able to engage or the door handle won't open, car doors may be stuck due to many reasons. The latch mechanism is usually the culprit. The good news is, most of these issues are easily solved with just a few easy techniques. Learn how to do it by reading further! Check the Key Over time, the tumblers in the door lock of your car could become clogged with dirt and rust. It can stop the lock from working when you insert the key fob or turn the ignition key. This can cause the mechanism of the lock to become jammed. If this happens, you may require removing the door handle and then access the lock mechanism to unjam it. This is a simple DIY project that you can complete at home. There are many reasons that your door lock could be stuck. It could be caused by a physical obstruction in the latch mechanism or an electrical problem with your key fob or solenoid for your door lock. Another possibility is that someone knocked the latch into a locked position when the door was open. If you suspect the problem is your key be sure to go through it repeatedly to determine whether the tumblers move freely. This will reset the lock. You can also try a lock de-icer to melt the ice and allow you to open the door. If you still have a difficult time you can try spraying a multi-purpose lubricant inside the mechanism of the door lock. Make sure you turn off the lock before you do this. Otherwise, you may damage the latch mechanism. You should be able open the lock with your door handle once it's well-lubricated. If you aren't, there's a problem with the latch mechanism itself, and you might need to have it replaced. You can attempt to fix a latch that is stuck by using a screwdriver that can be used to manually push the latch up to the unlocked position. To do this begin by pulling the interior and then the handle on the outside of the car. Then using a screwdriver, apply pressure to the left leg of the latch so that it can be pushed up to the unlocked position. Repeat the process for the left side of the latch in order to reset it. Close the door once the latch has been unlocked to test the latch. Check the Battery The car door lock functions by sending electronic signals to the solenoid of each door. The solenoid then converts these signals into mechanical action. In this instance it is turning a steel bar that latches the doors. If your doors aren't locking or unlocking via the key fob, or not opening from the outside or inside the car, it could be a frustrating experience. Fortunately, you can usually solve the issue without taking your vehicle to a mechanic. The door lock mechanism could be blocked. To test this, open up your door and inspect the mechanism of the latch. It should be apparent that it has “open” jaws at the outside that are designed to catch the anchor in the door jamb and turn into a closed position in order to fix the latch to the anchor. If the latch is closed and it isn't able to rotate to the correct position, the latch won't engage the anchor and close the door. You can fix the issue by applying WD-40 or a different oil-lubricant to the interior of the door. Utilizing a screwdriver, you can push the latch to an open position. Then, it will rotate to its normal position. This process can be challenging to complete without breaking something. You may want to ask someone in your family or a trusted someone you trust to assist you. It's crucial not to put the key in the lock after you've lubricated it. You may break the key in the lock if you attempt this. If you're having issues locking or unlocking your car with the key fob, and you have tried all the above steps you should contact a professional technician who will do more sophisticated diagnostics and repairs. They'll be able to help you determine the source of the issue and determine the best solution for you and your vehicle. Verify the Wire A malfunctioning control module could be the cause of a non-working door lock button inside the car. These modules are the brains behind the electronic locking and unlocking mechanisms. They connect to the actual latch and handle using a series of rods that allow them to move up and down. When they begin to wear out, the system will stop working correctly. This is a frequent issue in older cars. Other issues can cause the door lock to then get stuck in a locked state due to dirt or grime accumulating on the lock mechanism or a jammed handle. A simple lubrication solution can solve the problem. A penetrating catalyst or WD-40 can be purchased at most home improvement stores or auto supply stores or on the internet, and used to lubricate car door locks through the keyhole. Examine the fuses and wiring for any problems that may arise if you aren't able to unlock the door with the key or button inside the car. If the wiring is in good condition the issue is likely to be related to the solenoids of the power lock and actuators. A professional locksmith can identify and fix any issues with the door locks of your car. They can also install new features, such as smart keys, which can make your car more convenient in the future. The process of removing the interior door handle and the panel varies slightly from vehicle to vehicle, but the basic concept is the same. You'll need to locate and remove all fasteners holding the handle plate or the panel in place, then gently pry up the panels without damaging them. Then, you can gain access to the door latch and lock actuator to determine what's happening. Once you've gotten the panel out and the door latch is unlocked, you can usually get to the latch that is locked by placing a screwdriver between the legs of the door latch and pushing it upwards until it reaches its final, unlocked position. Close the door to determine if the latch is reset. Check the Actuator The door lock actuator like all electrical devices, can fail over time. This could be due to a variety of reasons, such as corrosion from exposure to water or other contaminants. The actuator could also be damaged or misaligned due to excessive pressure or mechanical stress. One of the most frequent signs that the door lock actuator is starting to go bad is when you're unable unlock the doors even if you use the key fob or manually activate the switch inside the vehicle. This could be a serious issue since it implies that someone is able to lock the car without having the proper keys. To determine the condition of a door lock actuator first, you need to determine whether it is receiving power from the central locking system or the power windows control module. Then you can test the functionality of the actuator with a multimeter, observing any unusual or erratic behavior. You can also inspect the actuator to identify evidence of wear and tear, and make sure that the linkage hasn't been obstructed. It is important to know that the actuator isn't repairable and should be replaced in the event it goes bad. It is possible to do this with the assistance of a professional, but it is important to know that you will probably need to remove the door panel to access the actuator. It's a good idea, prior to performing any tests on the actuator for the door lock, to put on safety glasses and consult the owner's manual of your vehicle to learn about recommended safety precautions. You should also make sure you're working on a level surface and have a socket available. To test the actuator, you must locate the latch inside the front door, and also the gap or hole it is supposed to fall into. Once you've found it, insert a pen or key into the gap and then flick or push it towards the door in a semi-upward direction. If car central lock remote repair moves then it's most likely that the actuator is working correctly and that the problem is with the remote or key fob.