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How to Repair Car Key Fobs Although we use them a lot, key fobs are not indestructible. They are able to break down in a variety of ways. The most frequent issue is the battery being dead but other issues can be more serious. The majority of these issues can be solved with a quick fix at home. Dead Battery A dead battery is probably the most frequent reason the car key fob stops functioning. Fob batteries can be drained quickly, especially if they're exposed to extreme conditions like humidity, temperatures or even water. It's a good idea to keep an extra fob battery in your wallet just in case. The LED light will generally cease to blink when the battery in your car key fob is running low. The fob might be unable to function from the same distance it used to. In this scenario, it may be necessary to reprogram the key fob or replace it completely. Fortunately the replacement of the battery in a car key fob is easy. Find out the type of battery that is used. The type of battery should be engraved on the back of your key fob. If you are not sure, a quick Google search will be helpful. Once you've found the type of battery and the key fob, you can open it at the junction. Use a flathead screwdriver, or even your fingernail, to pry apart the two halves. Remove the old battery and replace it with a brand 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 died until they lock or unlock their car and the buttons don't work anymore. This can be fixed by reprogramming your fob. However, it can be costly and time-consuming. You can also contact roadside assistance to see if they are able to start your car and get it back on the road. If you have tried all of these options but your car won't start, then it's time for a professional. A qualified technician can determine whether your car's computer system needs reprogramming or the fob simply requires an upgrade in battery. They can also recommend a reputable auto shop to replace your fob's key. In the end it is not always the case that a new fob is the best solution. Circuit Board Damage Key fobs aren't indestructible, but it is able to withstand a lot of physical damage. Battery, circuit board and buttons are all subject to wear and wear and tear. It is essential to take care of these parts to ensure your key fob remains in good working order. car key repairs to do is that the battery in your key fob isn't dead. If it is replaced, determine if this fixes the problem. If not, you might need to open the key fob and clean the contact surfaces. This can be difficult because some key fobs don't have easy-release mechanisms that allow you to open them and you could damage your fob if you try to force it apart. You can purchase a specific tool to open your key fob, however you should always adhere to the manufacturer's guidelines to avoid damaging it. Another common problem is a damaged or faulty circuit board inside the key fob. It can be caused by many things, including dirt or moisture getting into the battery compartment. Issues with software or an accidental firmware update can be the cause of this. If your key fob has stopped working completely, consider having it reprogrammed by a locksmith that specializes in this type of work. Radio interference is also a possibility. It could happen if are other wireless devices that transmit on the same frequency as your key fob, for instance radar detectors, home security systems. If this is the case, check with the other manufacturers of your device to make sure that your key fob isn't affected by their signals. You may also need to replace a switch or other electrical component in your key fob. You can find online guides that show you how to fix this yourself. Be cautious when doing this because the circuit boards in your key fob are small and are susceptible to breaking in the event of rough handling. If you do this yourself, make sure to use a high quality SMT switch and solder it into place properly. Buttons that are worn out Car key fobs can suffer a lot of wear and wear and tear. They are susceptible to being lost and spend a significant amount of time being tossed around in your purse or pocket. The jolting can cause the buttons to wear out or get stuck. If this happens an easy adjustment could be all it takes to get it working again. Most modern key fobs come with sensors on them that detect if they've been pressed. They're designed to do this so that they can decrease the chance of theft by someone else of your vehicle. If your key fob's buttons aren't responding when you press them this is a sign that they're worn out and require to be replaced. Key fobs also contain a circuit board inside them that sends signals to the car. Those signals include unlock and lock commands, as well as commands to start your engine. If the circuit board inside your vehicle is damaged then your key fob might not be able to unlock your vehicle or even start the engine. This kind of damage is usually caused by blunt force or water. You'll be able to tell that the buttons on your key fob are deteriorating If you're finding yourself pressing more than usual in order to get them working. Your fob could not be sending signals to your car or have a smaller range. If you're unable to unlock your key fob, unlock or start your car, you need to contact a locksmith in your area immediately. They can determine if your key fob is damaged or if your ignition cylinder is worn out. Fortunately, most car keyfob problems aren't complicated or serious. The best way to avoid getting caught off guard by an issue with your key fob is to keep a spare in your possession at all times. You'll never be stranded because of an issue with your key or a lost one. If you have lost your spare key, a professional locksmith can reset it to work with your vehicle's engine. They can also fix any internal damage to the key fob. Broken Case The case for your key fob does more than just protect the buttons and battery. The case also houses the circuitry that performs all the electrical magic every time you press a key fob button. The circuit board receives the signal from your key fob and transmits it to your car. If the board is damaged or dead the key fob won't be able to operate. Sometimes a dead key fob can be reprogrammed which is something that your local auto locksmith or the dealership can assist you with. Batteries could be the reason your key fob's battery not working. This is a simple solution that can be done at home by replacing the battery. You can purchase an alternative battery at the local auto parts store or online. These batteries aren't just for key fobs. There are several ways to open up the key fob and go inside it, depending on the kind. You can determine what type of battery your key fob has by conducting a quick internet search. You can then buy a new replacement and pop the old one out and put the new one in. The biggest concern when repairing an old car key fob is that you don't want to harm the circuit board or buttons any further. When you try to break the key fob using a hard edge like screwdrivers can break the case or crack the plastic. Fortunately, a replacement case isn't expensive and you can purchase an entire fob with the electronics from eBay or Amazon for less than $40. If your key fob isn't functioning look into whether the batteries are dead or whether the circuit board is damaged. If this isn't the case, you can have it repaired quickly and inexpensively by a professional. Otherwise, it might be time to invest in an upgrade. Be sure to check the warranty on any fob replacement or used that you purchase online.