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Car Remote Key Repair Modern car remotes are convenient and useful, but can be frustrating if they stop functioning. Fortunately, there are quick fixes that will usually get them back up and running. Replace the battery first. Most fobs are equipped with lithium coin cells, which are inexpensive and easy to find. Broken Electronics The remote car key you have an internal electronic circuit board that transmits and interprets signals to your vehicle. If the board is damaged the key fob won't perform as it should. Contrary to battery failure, which is typically fairly simple for most drivers to fix at home damage to the transmitter or receiver of your remote key will require a professional auto locksmith or your dealer in the car. Most remote key fobs use lithium ion coin batteries, that have a long shelf life but will not last forever. The change of the batteries is likely to solve the issue, particularly if you've had them for a while. If you've been using your remote fob for a long time you may be shocked to find that the buttons aren't responding in any way, even if the batteries are new. Since the buttons on your key fob are subject to a lot of jostling and rubbing, they may fail or cease to function over time. If this is the case, removing the buttons and cleaning them before placing them back in place will usually resolve the issue. If your remote's buttons aren't working, you might have to program it again to work with the system in your car. This is usually done by turning the key in the ignition several times with the doors closed. This will depend on the model and make of your vehicle, but you can find instructions on the internet or ask a professional for assistance. If the key fob is made of plastic, you can take off the cover by pulling it apart. Be cautious not to damage the buttons or internal components. This can be done with a pair needle-nosed pliers that have longer tips. They are able to easily grasp small components. Lubricating pliers with putty, melted tallow or super glue can help them grasp delicate parts. This is something that an automotive locksmith can use, since improper methods could cause damage to the electronic components. The attempt to forcefully pull the fob apart can damage the plastic, and it's also possible to accidentally break the buttons that are connected to it. A defective transponder chip Transponder chips can fail if you've previously successfully started the car using the remote key but cannot do it again. This is because the key relies on a small electronic component in order to communicate with the immobilizer system. It sends a signal to the system that your key is legitimate and you should be in a position to start the engine. If the chip does not correctly transmit this message, the immobilizer will disable your vehicle. This issue is common in older vehicles however, it can happen in newer ones as well. This is due to the transponder chip can wear out over time. It is possible to get a locksmith for your car replace this part of your key, but this can be expensive. In some instances the chip in your key could be dead. In this instance, the dealer will have to replace it. This will be the most expensive option but is often necessary in order to get your car back on the road. Another possibility is that the key's chip is damaged. This means it can no longer communicate with the immobilizer. This can happen if the battery is changed or if the key has been physically damaged. A Mesa locksmith in your car can solve this issue, but it is possible to go to the dealership for your key programmed once more. If you are having problems with your remote key you must first attempt to backup your device. If this does not solve the issue, you should take apart your key fob and conduct a visual inspection. Make sure all buttons appear to be broken or loose. These parts get a lot of use and may be lost over time. It's best to have them put in place by a professional if they are loose. This is often a way to bring back the functionality of your key fob. This is particularly applicable to keys that were accidentally put in the wrong ignition lock cylinder. Damaged Battery If the key fob still not working after you've tried a new one it could be due to a variety of other issues. Fobs could be damaged by water or dropped or dropped or stepped on. Internal connections, such as ones that connect to battery terminals of the remote, may also be damaged or disconnected. You may have to reprogram your key fob in case you don't have a spare of the same kind and model. Modern key fobs must be programmed to match the car to ensure that only you are able to unlock the car doors. It's a must to safeguard your car and to prevent other people from using your key fob to gain access to your vehicle or cause issues with the electrical system. Certain engine error codes or even normal wear-and-tear can corrupt the programming and prevent your key fob from working. It's important to have your key fob reset correctly by a professional who has the right equipment. It's possible that the issue lies with the buttons that are a much simpler fix than replacing the whole key fob. Key fobs usually have rubberized buttons which can be damaged or loosen up over time. If you notice that the buttons don't appear to be damaged, you may need to adjust them manually. It is best to open the key fob and look at it, but be aware. Some key fobs do not have a simple release mechanism. You may require a screwdriver or small tool to break them. Certain fobs are sealed and are not openable without special tools. You'll need to bring them to a dealer to get them professionally opened. You can utilize a spare keyfob of the same make and model to access the programming mode of your car. Depending on your car it could involve closing and locking the doors, switching lights and electronics on and off and pressing a certain set of buttons in a particular sequence. Failing Buttons Mechanical damage could be the cause when the buttons on your key fob aren't working or require you to press them forcefully. Dropping the key fob on concrete or accidentally hitting one of the buttons with a sharp object could affect how well it functions. You'll have to dismantle the key fob and look over it to determine if there are any buttons that appear to be broken. If this is the situation, a locksmith will fix it. Dirt and crud can cause buttons to fail. car key immobiliser repair is important to clean your keys frequently using a cotton swab soaked in alcohol. It is also possible to clean the surfaces of the keys. You should also determine if the issue lies related to your car lock or the key fob. If you don't have a spare key, try the keys in a different vehicle to see if the problem is solved. If the key fob should be reprogrammed is also dependent on the condition of the battery. If your key fob is not able to function after replacing the batteries, it probably means that the battery terminal contacts are damaged. Pressing the buttons on your key fob too many times while out of range or disconnecting your car battery can also cause the deprogramming of an electronic key fob. If the key fob does not work after replacing the battery you should have it reprogrammed to your car. It will depend on your specific car model, but you'll typically have to lock and unlock the doors manually, insert the key into the ignition, turn it to accessory, and press a button on the remote that is wireless. If this is working, the exterior and/or interior lights should light up. It is possible to test the key fob to confirm that it was successfully programmed. In rare instances the key fob might be inoperable due to problems with the door locks.