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Car Remote Key Repair Modern remotes for cars are useful and convenient, however they can be frustrating when they stop working. There are a few quick solutions to get them working again. First, you should replace the battery. Most fobs are equipped with lithium coin cells, which are affordable and easily accessible. Broken Electronics The electronic circuit board that is in your car key remote transmits and interprets signals for your car. The key fob will cease to function in the event that this board is damaged. Unlike battery failure, which is usually quite easy for most drivers to fix at home damage to the receiver or transmitter of your remote key will probably require a professional locksmith or your car dealer. Most remote key fobs are powered by a lithium ion coin batteries, which have an extended shelf life. However they will not last for a long time. If you've used the batteries for a long period of time replacing them is likely to solve your problem. If you've been using your remote fob for a while, you might be surprised to discover that the buttons aren't working at all, even when the batteries are new. Since the buttons on your key fob undergo lots of rubbing and can break or become inactive over time. If this happens, removing the buttons, cleaning them, and placing them back in place will usually resolve your issue. If the buttons on your remote aren't responding, you may have to change the programming to match your car's system. This is typically done by turning the key in the ignition several times with the doors shut. This will depend on the make and model of your vehicle, however you can find the instructions online or seek professional help. If the key fob has an exterior made of plastic it is possible to take off the cover and pry it apart. However, be careful not to damage buttons or other internal components. The best tool for this is pliers with needle-nose tips with longer tips, which can more easily grasp small pieces. Lubricating pliers with putty melted tallow or super glue can aid in grabbing delicate components. It's recommended to employ an automotive locksmith take care of this, since improper techniques can damage the electronics inside. If you try to forcefully break the fob apart could break the plastic, and it's also possible to accidentally snap off any buttons that are attached to it. Chips in the transponder are defective. Transponder chips can fail if you've previously had the ability to start your vehicle using the remote key but are unable to do so 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 to inform it that your key is valid and you'll be able to begin the vehicle. If the chip does not correctly transmit this message, the immobilizer will disable your vehicle. This problem is more common in older cars, but it can also be found in more modern vehicles. This is due to the transponder chip can wear out over time. The chip can be repaired by a car locksmith, but it is expensive. In some cases the chip in your key might be dead. If this is the scenario, the chip will require replacement by an auto dealer. This is the most expensive option but is often necessary in order to get your car back on the road. Another possibility is that your key's chip has been damaged. This means that it will no longer communicate with the immobilizer. This can occur when the battery is replaced, or it can occur in the event of physical damage to the key. A Mesa auto locksmith can solve this issue, but you may need to go to the dealer to have your key programmed. If you're having issues with your remote key, you should first try a backup. If this does not solve the issue, you should disassemble your key fob to conduct a visual inspection. Make sure that no buttons appear to be broken or broken. These parts see a lot of use and may be jostled loose over time. It's best to have them put to the correct position by a professional if they are loose. This will often bring back the functionality of your key fob. This is particularly true for keys that were accidentally placed into the wrong ignition lock. 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 can be damaged by dropping them or stepping over them, and the internal connections, like the ones that connect the battery terminals within the remote, could be damaged or broken. You may need to reprogram your key fob if you don't have a replacement similar type and model. Modern key fobs need to be programmed to work with the vehicle to ensure that only you can unlock the car doors. This is a crucial step to secure your vehicle and stop other people from using your key fob to gain access to your car or cause electrical system issues. Certain engine error codes, or wear and tear from normal wear and tear could corrupt the program and stop your key fob from working. Professionals with the right equipment can reprogram your key fob properly. It's possible that the issue lies with the buttons and is an simpler fix than replacing the whole key fob. Key fobs typically feature rubberized buttons that can be damaged or loosen up over time. If you notice that the buttons do not appear to be damaged, you may need to adjust them manually. It's best to open up the key fob and take a look at it, but be aware. Certain key fobs don't have a simple release mechanism. You may need a screwdriver or small tool to break them. Some fobs are sealed, and cannot be opened without the use of specialized tools. You'll need to go to a professional to have them professionally opened. If you have an extra key fob for the same model and make use of it to access the programming mode of your car. This may require you to shut and lock the doors, switch on and off the lights and electronics, and use a set of buttons in an order that is specific to your vehicle. Failing Buttons If your key fob has buttons that do not work or need to be pressing very hard in order to work, it could be because of mechanical damage. The key fob's function could be affected by dropping it on concrete or accidentally hitting a button with a sharp object. If this happens you'll have to disassemble the key fob and examine it carefully to determine whether any buttons appear to be damaged or out of the right place. A locksmith can repair it for you if this is the case. The failure of buttons can be caused by dirt or crud that is trapped between the buttons. Clean your key fob using the help of a cotton swab which has been submerged in alcohol. repair car key remote may also be necessary to clean the surfaces of the keys. You should also try to determine if the issue is with your car's locks or with the key fob itself. If you don't have a spare key fob to test, consider using the keys on a different vehicle to determine if they work also. The condition of the battery will determine whether or not you need to reprogram the key fob. If your key fob is unable to operate after you replace the batteries, it probably indicates that the battery's terminal contacts are damaged. Pressing the buttons on your key fob too many times while you're out of range or disconnecting your car battery could also deprogram an electronic key fob. If your key fob isn't working after replacing the battery, you should have it reprogrammed to your vehicle. It will depend on your specific car model, but you'll generally require locking and unlocking the doors manually, insert the key into the ignition, set it to accessory, and press the wireless remote. If this is working the exterior and/or interior lights will flash. It is possible to test the key fob to confirm that it was successfully programmed. In rare instances, the key fob may be inoperable due to an issue with the door lock.