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How to Fix a Key Fob That isn't Working If your key fob does not work and you're not sure why, you can fix it by following a few simple steps. The first step is to make sure that it's not the backup remote. If the backup can lock and unlock your car door, then there's a likely issue with the main remote. The most common causes of key malfunctions for car remotes are circuitry or battery issues. Battery The battery in a key fob can be worn out over time. It is easy to replace batteries. However it is essential to select the right kind. You can check the owner's manual or contact the manufacturer to inquire about the correct type. It is also essential to inspect the battery compartment, as batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the battery doesn't solve the issue, there may be other issues that require attention from a professional. If the buttons are stuck or broken, for example it could be necessary to remove the remote and rebuild each component. You can also try reprogramming your vehicle to recognize the new key fob. Buttons Key fobs may become dirty and worn-out from repeated use. It is not uncommon for buttons to stop working, or to require a hard push to make them work. This can be very frustrating especially when you're away from your home and have to switch on your car. Even malfunctioning or worn-out buttons are often fixable with a bit of time and the tools you already have at home. First, make sure the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully open up the remote and inspect the circuit board. Check for signs of corrosion or other indications that the buttons are worn out or damaged, like missing the conductive paint. Use the Q-tip, dipped in alcohol to gently clean any membrane contacts that have worn or have conductive paint missing. Be careful not to rub too hard, since this could cause damage to the conductive painting and prevent the button firing when pressed. Check the battery connector terminals for loose solder connections. If broken key repair near me is the case, soldering them back in place may bring back function to the button. You can apply the same method to restore functionality to any other loose connection in the fob. Finally, if any of the buttons made of rubber on the front of the key fob stop functioning or require a difficult press to function it is likely that the graphite disks on the back of the button are wearing out and need to be replaced. This can be done by rubbing a pencil over the disks, which will bring the button back to its original state. If none of this is useful, or if the button does not respond to a firm press It could be the case that the circuit board has gone bad. It is possible to fix the issue by cleaning and re-soldering your fob but you should also have a spare in case it does not work. Circuitry If the key fob buttons function the circuit board that is inside your remote might be dirty. This issue can be fixed through a thorough examination. The most frequent causes of dirty circuit boards are water and damaged cases. A damaged case could allow water and other debris to enter the circuit board, which can cause it to short. Water can also get through pins and vias, which are small connectors on the board. If you're able to open your key fob, and you don't mind making an mess, you can remove the buttons from their sockets and put in new ones. It's also worth checking the connections between the battery terminals. They can become very dirty and if they're loose, the buttons might not work or may even remain in their down position. Soldering terminals and buttons back into place is usually enough to restore a non-working fob to a working condition. Non-Remote Transponder Chips Sealed non-remote transponder chips are much more durable than remote fobs they are contained in, but they can still be damaged by a hole that is drilled into them or run over by a lawnmowers or car door handle. Most of the time non-remote transponder chip malfunctions can be blamed on a blown fuse. If you are not comfortable opening the key fob, you can remove the circuitboard and use a multimeter to check that the diode is working properly. If you're not comfortable with this, you can go to your local Oreilly or hardware store and test their RF frequency tester. This will let you know whether the key fob is sending signals. Programming Key fobs are not indestructible and are susceptible to being damaged by a lot of things. They can lose their pairing to the car's receiver because of shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob to get it back up and running. If resetting or replacing your key fob fails, you may need to replace it.

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