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How to Repair Car Key Fobs Although we put them through a lot keys are not indestructible. In fact, they are able to break down in a variety of ways. While the most common issue is a dead battery, other issues can be more serious. The majority of these issues can be resolved with a quick fix at home. Dead Battery A dead battery is the most frequent reason for the key fob not functioning. Fob batteries are prone to draining quickly, particularly if they're exposed to extreme conditions like humidity, temperatures or even water. Keep an extra battery in your wallet in case you need it. The LED light will usually cease to blink when the battery in your car key fob is low. It's also possible that the fob won't work from the same distance it used to. In this scenario, it may be necessary to re-program your key fob or even replace it entirely. Fortunately, replacing the car key fob battery is simple. First, determine what type of battery is used. The type of battery should be engraved on the side of the fob. If you are not sure then an easy Google search can help. The key fob can be opened along the seam once you've identified the battery type. Use a flathead screwdriver, or even your fingernail to break the two halves. Take the old battery out, and replace it with a new one. Insert the new battery so that the positive (+) face is facing the buttons on the fob. Some drivers aren't aware that their fob has gone out of service until they lock or unlock their vehicle and the buttons no longer work. This can be fixed by reprogramming your 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 car and get it back on the road. If you have tried both of these solutions and your car still won't start, then it's time to call a professional. A trained technician can tell the computer in your car needs reconfiguring, or if your key fob simply needs replacement batteries. They can also recommend a reputable auto repair shop to replace your key fob. Sometimes, however, a new fob could be the best option. Circuit Board Damage A key fob can take some physical abuse and is not indestructible. The battery, the circuit board, and buttons all get their fair share of wear and tear over time It is therefore essential to be aware and take care of them to ensure that your car key fob operating well. The most straightforward thing to do is that the battery in your key fob isn't dead. Replace the battery to see if it fixes the issue. If not, you'll have to remove the key fob and clean the contact surfaces. It is sometimes difficult to open certain key fobs due to the fact that they don't have an easy release mechanism. You could cause damage to your fob by trying force it apart. You can purchase a specific tool to open your key fob. However, you should adhere to the guidelines of the manufacturer to avoid damaging the. A damaged or corrupted key fob circuit board is another frequent issue. It can be caused by many things, including moisture or dirt getting into the battery compartment. Software issues or an accident firmware update could be the cause for this. If your key fob isn't working, you may be interested in getting it reprogrammed. This can be done by a locksmith who is skilled in this work. Radio interference is another possibility. This can happen if there are other wireless devices that transmit on the same frequency your key fob, for instance radar detectors or home security systems. If this is the situation you need to contact the other device manufacturer to make sure that your key fob will not be affected by their signals. You may also need to replace a switch or another electrical component of your key fob. This is a difficult fix however, you can find guides online that explain how to fix it yourself. Be cautious, however, as the circuit board that is inside your key fob is small and can easily break if handled with care. If you're doing this yourself, be sure to use a good quality SMT switch and then solder it in place correctly. Out Buttons Out Buttons Car key fobs are susceptible to a lot wear and tear. They are susceptible to being dropped and spend a lot time being jostled in your pocket or purse. The constant jostling can cause buttons to wear out or become stuck. If this happens, a simple adjustment may be all that's needed to restore the button's functionality. Modern key fobs are equipped with sensors that are able to detect when they've been press. They're made to do this so that they can lower the risk of thieves stealing your car. If the buttons on your key fob don't respond when pressed, they are damaged and should be replaced. The circuit board inside the key fob transmits signals to your car. These signals include commands to unlock and lock your car, as well as commands to start your engine. If the circuit board inside your vehicle is damaged then the key fob you have may not allow you to unlock your car or start the engine. Most of the time, this kind of damage is caused by water, blunt force, or something scratching the circuit board. If you have to press the buttons more than normal to activate them If this is the case, then your fob's buttons are becoming worn out. In addition your fob could stop transmitting a signal to the car or have less range than before. Contact a locksmith immediately if you are not able to use the key fob to start your vehicle. central locking key repair 'll be able determine whether the key fob itself is damaged or if your ignition cylinder has worn down. Luckily, most key fob issues in cars aren't too serious or complex. The best way to avoid being caught off guard by a malfunctioning key fob is to have an extra key in your possession at all times. You'll never be caught in the middle because of an unresponsive or lost key. If you have lost your spare key, a professional locksmith can rekey it to work with your vehicle's engine. They'll also be able repair any internal damage that may have occurred on the key fob. Broken Case The case for your key fob provides more than just protection for the battery and buttons. The case also houses the circuitry that does all the electrical magic every time you press a key fob button. The board transmits the signal from your keyfob to your car. Your key fob won't work if this board is damaged. Sometimes a dead key fob may need to be reset which is something your local auto locksmith or the dealership can assist you with. Batteries may be the cause of your key fob not working. This is a simple solution that can be done at home by replacing the battery. You can find the replacement battery from the local auto parts store or on the internet. These batteries are not only for key fobs. Depending on the kind of key fob you have, there are different ways to open it and gain access to the inside. A quick internet search should show you which type of key fob you have and what kind of battery it uses. From there, you can buy an alternative and then simply pop the old one out and the new one in. 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. If you attempt to pry away the key fob with a screwdriver or other hard edge, it can crack the plastic or damage the case. A replacement case isn't expensive and you can buy the entire fob including the electronics on eBay or Amazon for under $40. If your key fob isn't working, check to see if the batteries are depleted or whether the circuit board has been damaged. If that's not the situation, a professional could repair it quickly and cost-effectively. If not, it could be time to replace the fob. Be sure to check the warranty on any replacement or used fobs that you purchase online.