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Car Remote Key Repair Modern car remote keys are useful and convenient, but they can be frustrating when they stop working. There are some quick solutions to make them work again. The first step is to replace the battery. The majority of fobs utilize lithium coin cells, which are cheap and readily available. Broken Electronics The electronic circuit board in your car key remote transmits and interprets signals for your vehicle. If the board is damaged, the key fob will not work correctly. Contrary to battery failure, which is generally very simple for most drivers to fix at home, damage to the transmitter or receiver of the remote key will require a professional auto locksmith or your dealer in the car. Most remote key fobs use lithium ion coin batteries which have a decent time-to-life, but won't last for long. If you've been using the batteries for a long period of time replacing them is likely to solve your issue. If you've been using your remote fob for a long time you may be shocked to find that the buttons don't respond at all, even when the batteries are fresh. Because the buttons on your key fob are subject to frequent jolts and can break or become inactive over time. If this happens, removing the buttons and cleaning them before replacing them can often solve the problem. If the buttons on your remote still don't respond, you may need to reprogramme it to work with the car's system. This is typically done by turning the ignition key a few times while the doors are closed. This will depend on the model and make of your vehicle, but you can locate the steps on the internet or ask a professional for assistance. If the key fob is made of an exterior made of plastic, it's possible to remove the cover and then pry it off. Be careful not to damage the buttons or other internal components. This can be done with needle-nosed pliers which have longer tips. They are able to grasp small parts. Lubricating the pliers with super glue, melted tallow, or putty can assist them to hold delicate parts. This is something that locksmiths in the automotive industry can do, as incorrect methods could damage the electronic components. The attempt to forcefully pull the fob off could damage the plastic, and it's possible to accidentally break any buttons that are connected to it. Faulty transponder chip If you've been able to start your car using the remote key, but it's not working again, it could indicate an issue with the transponder chip. This is because the key relies upon the tiny electronic component to communicate with the immobilizer system. It transmits the signal to the system to inform it that your key is valid, and you should be able start the vehicle. If the chip fails to properly transmit this message, the immobilizer disables your vehicle. This issue is frequent in older vehicles, but can also happen in modern vehicles too. This is because the transponder chip can wear out over time. This part can be replaced by a car locksmith however it is costly. In some cases the chip may be dead. If this is the case, it will need to be replaced by a dealer. This is the most costly but essential option to get your car back on the road. The other possibility is that the chip inside the key has become damaged, which means it no longer communicates properly with the immobilizer system. This could occur when the battery is replaced or it can occur if there is physical damage to the key. A Mesa auto locksmith can solve this issue, however you may have to visit the dealer to have your key programmed. If you are having problems with your remote key, you should first try a backup. If this does not solve the issue, you can disassemble the key fob to conduct a visual inspection. Make sure there are no buttons that appear to be damaged or loose. These parts see a lot of use and can easily be moved around over time. If they are loose, it's recommended to have them soldered back in place by an experienced professional. In a lot of instances, this will return your key fob's functionality. This is particularly applicable to keys that were accidentally inserted into the wrong ignition lock. remote key fob repair If the key fob is not working after you've tried a different one it could be due to other problems. Fobs may be damaged by water, or dropped or stepped on. Internal connections, such as ones that connect to battery terminals of the remote, may also be broken or disconnected. You may have to reprogram your key fob if you do not have a spare that is the same kind and model. Modern key fobs need to be programmed to work with the vehicle to ensure that only you are able to unlock the doors of your car. This is an essential step to safeguard your vehicle and stop other people from using your key fob to gain access to your vehicle or cause electrical system issues. Certain engine error codes or even normal wear-and-tear can corrupt the programming and prevent your key fob from functioning. It is crucial to have your key fob reprogrammed correctly by a professional who has the proper equipment. It's possible that the problem is with the buttons, which is a much easier fix than replacing the whole key fob. Key fobs usually come with rubberized buttons that could be damaged or loosen over time. If you're able to determine that the buttons aren't damaged you might try manually adjusting them. Open the fob that you are using to examine it, but be cautious. Certain fobs do not have an easy release mechanism, so you might need a small screwdriver or some other device to open them. Some fobs are sealed, and cannot be opened without specialized tools. You'll need to bring them to a professional to have them professionally opened. If you have an extra key fob from the same model and make you want to use it, try using it to start the mode of programming for your car. Depending on your car it could involve closing and locking the doors, switching the lights and other electronics off and on and pressing a certain set of buttons in a specific order. Failing Buttons Mechanical damage could be to blame if the buttons on your key fob don't function or require you to press them hard. The key fob being dropped on concrete or accidentally hitting one of the buttons with a sharp object may affect how well it functions. If this happens, you'll need to take the key fob apart and inspect it thoroughly to check if any of the buttons appear to be broken or out of place. A locksmith can fix it for you if this is the case. Failure of buttons could be caused by dirt or crud trapped between the buttons. Clean your key fob using the help of a cotton swab which has been submerged in alcohol. You may need to clean the surface of the keys. It is also important to determine if the problem is related to the locks on your vehicle or with the key fob itself. If you don't own an extra key, try using the keys of a different vehicle to see if the problem is solved. The condition of the battery will also determine whether or not you should change the programming of the key fob. If your key fob fails to function after replacing the batteries, it likely indicates that the battery's terminal contacts are damaged. You can also deprogram your electric key fob by pressing the buttons too often when you are not in range or disconnecting the battery in your car. If the key fob is still not working after replacing the battery, be able to reprogramme it with your vehicle. This will depend on the particular vehicle model however, generally, you'll have to manually lock and unlock the doors of your car and then insert the key fob into the ignition, rotate it to the accessory position and then push the button on the remote. If this works the exterior and/or interior lights should flash. You can test the key fob in order to confirm that it has been successfully programmed. In rare instances the key fob might not function due to a problem with the door lock.