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How to Repair Car Key Fobs Although we put them through a lot keys are not impervious to destruction. They are able to be destroyed in a variety of ways. While the most common problem is an unresponsive battery but other issues can be more grave. Fortunately, the majority of them can be resolved by a simple DIY fix at home. Dead Battery A dead battery is the most frequent reason for a key fob that is not working. Fob batteries drain quickly, especially if they're exposed to extreme temperatures, humidity or water. Keep an extra battery in your wallet in case you need it. You will usually know the moment the battery of your car key fob is running low because the light on the LED will stop glowing. It's also possible that your key fob won't function from the same distance it used to. In this instance the key fob could need to be programmed again or replaced completely. Fortunately replacing the car key fob battery is simple. Find out the type of battery that is used. The type of battery should be engraved on the side of the fob. If you're not sure then a quick Google search will help. Once you have found the kind of battery you want, open the key fob at the seam. Use a flathead screwdriver, or even your fingernail, to pry apart the two halves. Then, take out the battery that was removed and replace it with the new one in its place. Make sure to insert the new battery with the positive (+) side facing towards the buttons in the fob. Some drivers don't realize that their fob has died until they lock or unlock their car, and the buttons no longer work. This can be corrected by reprogramming the fob. However, it can be costly and time-consuming. You can also call roadside assistance to find out if they are able to jumpstart your vehicle and get it back on the road. If you've tried every solution and your car still doesn't turn on, it's time to speak with a professional. A qualified technician can determine if the car's computer system needs to be reprogrammed or if the fob requires a replacement battery. They can also recommend a reputable auto repair shop to replace your fob's key. In the end, though, sometimes a brand new fob is the most effective solution. Damaged Circuit Board A key fob is not impervious to destruction, but it can withstand a lot of physical harm. The battery, circuit board buttons, and other components all suffer their fair amount of wear and tear with time It is therefore essential to be vigilant and take care of them to ensure that your car key fob operating well. The easiest thing to check is to make sure the battery in the key fob isn't dying. Replace the battery to see if it fixes the issue. If not, you'll require opening the key fob and clean the contact surfaces. This can be a challenge since some key fobs do not have easy-release mechanisms to open them and you could end up damaging your key fob if attempt to break it. You can purchase a special tool to open your key fob, however you must always adhere to the manufacturer's guidelines to avoid damaging it. Another issue that is common is a damaged or corrupted circuit board inside the key fob. It can be caused by many things like moisture or dirt that gets into the battery compartment software, hardware issues or even an unintentional firmware update. If your key fob isn't functioning completely, you should think about having it reprogrammed by locksmiths who specialize in this kind of work. Radio interference is another possibility. This could happen when you have other wireless devices around that transmit at the same frequency, such as radar detectors or home security systems. If this is the situation you need to contact the other device manufacturer to ensure that your key fob won't be affected by their signals. It's also possible that your key fob has a bad switch or other electrical component that should be replaced. You can find online guides that show you how to fix this yourself. Be cautious when you do this, as the circuit boards that are inside your key fob are small and easily break in the event of rough handling. If you're doing this yourself, ensure you use an SMT switch of good quality and then solder the switch into the correct position. Buttons that are worn out Car key fobs can suffer lots of wear and wear and tear. They are prone to getting lost and spend a significant amount of time in your pocket or purse. This jostling can sometimes cause the buttons to wear down or get stuck. A simple adjustment can solve the issue. Most modern key fobs come with sensors on them that detect if they've been pressed. nearby key repair shop designed to do this to reduce the likelihood of thieves stealing your car. If the buttons on your key fob don't work when pressed, they are worn out and should be replaced. The circuit board that is in the key fob transmits signals to your car. These signals include commands to unlock and lock and also commands to start your engine. If the circuit board inside is damaged, your key fob may not unlock or start your engine. This type of damage is typically caused by blunt force or water. If you're forced to press the buttons harder than normal to make them function the key fob's buttons are wearing out. In addition, your fob may cease transmitting signals to the car or it'll have a lower range than it did before. Contact a locksmith immediately if you are unable to use your key fob to start your vehicle. They'll be able determine whether the key fob itself is damaged or if your ignition cylinder has worn down. Luckily, most car key fob issues aren't too serious or complex. Keep a spare key fob in your vehicle always in case you end up being thrown off by a malfunctioning device. This will ensure that you're not left stranded somewhere due to a lost or malfunctioning key. If electronic car key repair lose your spare key a professional locksmith can rekey it to work with your car's engine. They can also fix any internal damage to your key fob. Broken Case The case for your key fob provides more than just protection for the buttons and battery. It also houses the circuit board responsible for doing all of the electrical magic when you press the button on your key fob. The circuit board receives the signal from your key fob and sends it to your car. The key fob won't work if the board is damaged. Sometimes a dead key fob will just need to be reprogrammed, which is something your local auto locksmith or the dealership can assist you with. Batteries could be the reason the key fob's not working. This is a quick solution that can be done at home by replacing the battery. The good news is that you can find the replacement battery on the internet or at a local auto parts store, since these batteries are not exclusive to key fobs. Depending on the kind of key fob, there is various ways to open it and gain access to the inside. A quick search online should show you which type of key fob yours is and the type of battery it requires. You can then purchase a new one, take the old one out, and put the new one into. The biggest concern when repairing an old car key fob is that you don't want to damage the circuit board or buttons any further. Trying to pry apart the fob using an edge that is sharp like a screwdriver can break the case or crack the plastic. A replacement case is inexpensive and you can buy an entire fob, including the electronics on eBay or Amazon for under $40. So, if your key fob isn't working look into whether the batteries are depleted or if the circuit board is damaged. If nearby key repair shop isn't the situation, a professional could fix it quickly and inexpensively. If not, it could be time to replace the fob. Be sure to check the warranty of any fob replacement or used that you purchase on the internet.