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How to Repair Car Key Fobs Key fobs can be damaged even if we utilize them frequently. They can break down in a variety of ways. While the most common problem is a dead battery but other issues can be more serious. The majority of these issues can be resolved by a quick fix at home. Dead Battery A dead battery is probably the most frequent reason a car key fob stops working. Fob batteries drain quickly, particularly if they're exposed to extreme conditions like humidity, temperatures or even water. It is a good idea to keep an extra battery in your wallet just in case. You can usually tell that the battery of your car key fob is dying by the fact that the LED light will cease to glow. super fast reply 's also possible that your key fob won't function from the same distance it did in the past. In this instance it might be necessary to re-program the key fob or replace it completely. It is simple to replace the battery in a car keyfob. Find out the kind of battery used. The type of battery you are using should be stamped on the side of your key fob. Google can help you in case you're unsure. Once you have found the type of battery you want to use, open the key fob at the seam. Use a flathead screwdriver, or your fingernail to pry apart the two halves. Remove the old battery, and replace it with a brand new one. Then, insert the new battery so that the positive (+) face is facing the buttons on the fob. Some drivers might not be aware that the fob is dead until they try to lock or unlock their vehicle and the buttons aren't responding. This can be fixed by reprogramming your fob. However, it can be costly and time-consuming. Another option is to call roadside assistance and see if they are able to jump your vehicle and get you back on the road. If you've tried both of these solutions and your car still won't start and you're not sure why, it's time to contact a professional. A qualified technician will be able to determine if your car's computer system needs reprogramming or if the fob requires a replacement battery. They can also recommend a reputable auto repair shop to replace your fob's keys. In the end, though, sometimes a brand new fob is the best solution. Circuit Board Damage A key fob is not indestructible, but it can withstand a lot of physical harm. The battery, the circuit board buttons, and other components all suffer their fair amount of wear and tear over the course of time It is therefore essential to be aware and take care of them to keep your car key fob operating well. The most straightforward thing to do is that the battery in your key fob isn't depleted. If it is, replace the battery and determine if this fixes the issue. If this does not work, you might need to open the fob and clean the contact surfaces. This can be difficult since some key fobs don't have a release mechanism that is easy to unlock them and you may end up damaging your key fob if attempt to break it. You can buy a tool to open your key fob. But, you must always follow the instructions of the manufacturer to avoid damaging the. Another problem that is frequently encountered is a damaged or faulty circuit board inside the key fob. It can be caused by a number of things, such as dirt or moisture that gets into the battery compartment software, hardware issues or even an accidental firmware update. If your key fob isn't functioning completely, you should consider having it reprogrammed by an expert locksmith who specializes in this type of work. Radio interference is another possible cause. This could happen when you have other wireless devices that transmit at the same frequency, like radar detectors or home security systems. If this is the case, you should check with the other manufacturers of the device to ensure that your key fob isn't being affected by their signals. It's also possible that your key fob may have an issue with the switch or another electrical component that needs to be replaced. This is a more difficult fix however, there are guides online that explain how to fix it yourself. Be cautious, however, as the circuit board inside the key fob is tiny and can easily break when handled rough. If you're doing this yourself, make sure to use a good quality SMT switch and then solder it into place properly. Buttons that are worn out Car key fobs can get quite a bit of wear and wear and tear. They are prone to being dropped, and they often are frequently being tossed around in your purse or pocket. Sometimes, this jolting can cause the buttons to become worn out or become stuck. When this happens it's possible that a simple adjustment will be all that's needed to restore the button's functionality. Most modern key fobs come with sensors that tell if they've been pressed. They're designed to do this so that they can decrease the chance of thieves stealing your car. If your key fob's buttons aren't responding when you press them, that's an indication that they're worn-out and need to 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 instructions to start your engine. If your internal circuit board is damaged, your key fob might not be able to unlock your vehicle or even start the engine. Generally, this kind of damage is caused by water, blunt force or something that scratches the circuit board. You'll be able to tell that the buttons on your key fob are wearing out when you press the buttons more than usual in order to get them working. Your fob might be unable to send signals to your car or have a lower range. Contact a locksmith right away if you are not able to use the key fob to access your car. They can determine if your key fob is damaged or the cylinder of your ignition is worn out. Fortunately, the majority of key fob issues in cars aren't too serious or complex. Keep an extra key fob in your vehicle at all times to avoid being shocked by a malfunctioning key. You won't be left stranded because of an issue with your key or a lost one. Of course, if you do happen to lose your car key spare, a locksmith will be able to reset it to work with the ignition in your car. They'll also be able to repair any internal damage that's occurred on your key fob. Broken Case The case of the key fob does more than just shield the batteries and buttons. It also houses the circuit board that is responsible for doing all of the electrical magic when you press the button on your key fob. This board takes the signal from your key fob and sends it to your car. If the board is damaged or dead your key fob will not be able to operate. Sometimes, a key fob that is dead can be reset 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. The battery can be replaced at home. You can purchase a replacement battery at the local auto parts store or on the internet. These batteries are not only for key fobs. There are a variety of ways to open a key fob and get inside it, depending on the kind. You can find out what type of battery your key fob has by conducting a quick online search. From there, you can purchase the replacement and simply take the old one out and the new one in. When fixing a damaged key fob, the main goal is not to harm the circuit or buttons in any way. When you try to break a key fob with an edge that is sharp like screwdrivers can break the case or scratch the plastic. Fortunately, a replacement case isn't expensive and you can get a whole fob assembly with the electronics on eBay or Amazon for less than $40. So, if your key fob doesn't work Check to see if the batteries are dead or if the circuit board is damaged. If this isn't the case, you can have it repaired quickly and easily by a professional. If not, it might be time to replace the fob. Be sure to check the warranty of any replacement or used fobs that you purchase online.