How to Repair Car Lock Actuator
If your door locks that are powered don't respond when you press the lock button on the keyfob, this could be a sign that your actuator is damaged. In this case, you can usually repair it by lubricating the actuator.

It is recommended to speak with an expert auto locksmith.
Unlocking the door
Locked out of the vehicle can be a stressful experience, but there are several options to get back inside. If you're a member of AAA or another organization that provides roadside assistance, they'll send a locksmith to assist you, but you may be able to get back in using some DIY tools and techniques. These methods work best with cars that have power door locks that can be opened by pressing the lock button on the armrest, or using keys.
This method requires a straightened out wire hanger with an end with a hook or another long, rigid tool that will not bend under pressure. It will need to be sufficient in length to reach the door handle or the lock button, and it should include a hook on one end to catch the latch inside the door. You will also need pliers as well as long tweezers to move the hanger.
First, you'll need to create a space between the window frame and the body. Place the rod or hook of the hanger into the gap you created and then try to slide it or press the door lock flipper button or switch with it. With a little luck the door will then open.
If your car has a digital lock, you will need to find a way to open the door from inside without knowing the code. There is a lever within the door that can be pulled to open it, however you will have to figure out a way to reach it. You can use a Slim Jim or another long tool to reach the lever.
In some cases none of the methods above are effective and you'll have to call an expert locksmith for help. Ask them what they'll charge you prior to their arrival.
Unblocking the Keyhole
If the lock is jammed because the key was not fully engaged and the pin was not fully engaged, gently push the tumblers back to the proper position within the cylinder's interior. This could fix the issue but pushing too hard can cause further damage, so it is best to contact locksmiths to address the problem.
Keep the lock lubricated with graphite spray, or a silicone based product. mobile car lock repair G28CarKeys are superior to oils-based products, like WD-40 which are more likely to attract dirt and dust. Apply the product to the lock, then insert and turn the key several times, then move the key around into the hole to distribute the lubricant across the mechanism.
Another item that is useful to have on hand is powdered graphite, which works similar to a dry oil lubricant. It allows for smooth movement between metal surfaces without attracting dirt or grime, and is safe to use on locks that have internal pin tumblers. Try rub a few grains the powder inside the lock to help lubricate it and remove any gunk that may have built up in the keyhole.
In the end, it's essential to replace the key on a regular basis to ensure it's in good shape and to prevent it from becoming stuck over time. This will also help it last longer and perform more efficiently.
If the key isn't turning freely or is prone to jamming, the key itself may be worn and requires replacement or a key cut. You can use an instrument to smooth the sharp points on the teeth of the key to avoid any further sticking, but this is a job best left to an experienced.
If the above suggestions do not work If you are unable to solve the problem, try to get rid of the key stuck on by removing the strike plate from the door frame. You'll have to sand down the lower lip to make it larger opening where the key is placed. If this doesn't work, it's best to call a locksmith who has the necessary tools to disassemble a locked car door and solve the problem. They will have special tools designed to enter the locking mechanisms to detach them. They will also be able to determine why the lock isn't working properly.
Unfreezing the Lock
Locks that are frozen are commonplace during the Polar Vortex, which brings cold temperatures and winter storms. The good news is that there are a few simple ways to free the lock so you can open your car. The first thing to do is to try and remove any large ice chunks that are blocking the lock cylinder from accepting the key. It is essential to take care in this process to ensure that you don't damage your car door or lock cylinder.
Another common trick is to pour boiling water onto the lock. While this might work at first but it could damage your lock in the long term and will likely re-freeze any moisture which remains inside the lock cylinder. Pouring hot water can also cause thermal shock that can cause damage to modern electronic components in the lock cylinder and door sensor. Using metal or sharp objects to break the lock or try to push the key in could also cause damage to your car's door or lock and could potentially result in breaking the lock.
An alternative is to heat the key using a lighter or match and then insert it into the lock. Heating the key using a lighter or a hair dryer will create enough warmth to melt the ice that is coating the lock cylinder, making it easier to insert the key and open the door. If you're unable to insert the key in completely into the lock, warm it again and try again. Using a commercial deicer on your key or spraying the lock with a grease can help remove any ice from the lock.
Another great idea is to place your car in the sun and let the sunlight help melt the lock. It could take a while, but this is an easy and inexpensive solution to a locked that has frozen. A de-icer bottle in your car for emergencies like this is beneficial as the chemicals will quickly melt any ice and stop future freezing.
Replace the Actuator
The actuator is the tiny motor that rotates the lock via a set of gears. It can be activated by turning a key inside the door, or pressing an appropriate button from an electronic device, using keyless entry, or activating it from a central control unit. It is a low-power device which can wear out over time. If it wears out, it will create a buzzing or machine gun noise that won't stop until the actuator is replaced.
Most people can replace the actuator with basic tools and perseverance. The steps may vary slightly between cars since manufacturers build the parts in different ways however the fundamental process is the same. First, disconnect the battery to avoid electrical issues from arising during the repair. Remove the door panel with care from the vehicle. Depending on the model of your car, you may need to take off the window or the regulator in order to access the actuator.
Once you have removed the panel, you will be visible the actuator that is attached to the door latch. Usually the bolts holding it in place can be removed with a screwdriver. The actuator can then be pulled out of its mount. After the new actuator is in place, carefully reconnect the connector to the wiring harness. Connect the rods and cables to the actuator, latch and door panel.
Replace any clips that have been removed during the removal. Check all screws to ensure they are tightened properly. This will avoid any looseness or rattle. Reconnect all wires that have been disconnected and test the actuator to ensure it works. If it does, reinstall the door panel as well as the trim piece, and then reconnect the battery, and conduct a test to ensure the locks are functioning in the way they should. If your doors don't function as they should, it may be time to replace the actuator.