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How to Repair Car Key Fobs Even though we use them numerous times keys aren't indestructible. In fact, they could break down in a variety of ways. Other issues could be more important than the battery being dead. Luckily, most of them can be resolved with a quick DIY fix at home. Dead Battery A dead battery is the most common cause of a key fob that is not working. Fob batteries are known to drain quickly, especially if they are exposed to hot or cold temperatures, humidity or water. It is a good idea to keep an additional fob battery in your wallet in case. 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 at the same distance it did in the past. In this case it might 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 used. The type of battery should be engraved on the side of the fob. If you're unsure it is, a quick Google search will be helpful. The key fob can be opened along the seam after you have identified the battery type. You will need to use an small screwdriver with a flat head or even your fingernail break the two halves. Then, take out the old battery and insert the new one in its place. Then, insert the new battery so that the positive (+) face is facing the buttons on the fob. Some drivers might not be aware that their fob is dead until they try to lock or unlock their vehicle and the buttons aren't responding. This can be corrected by reprogramming your fob. However, it can be costly and time-consuming. You can also call roadside assistance to see whether they can restart your car and get it back on the road. If you've tried both solutions and your car still doesn't start, it's the right time to call an expert. A qualified technician can determine if your vehicle's computer system requires reprogramming or the fob simply requires a replacement battery. They will also suggest a reputable auto repair shop to replace your fob's key. Sometimes, however, a new fob might be the best solution. Circuit Board Damage The key fob isn't impervious to destruction, but it can withstand a lot of physical damage. The battery, circuit board and buttons are all susceptible to wear and wear and tear. It is crucial to take care of these components to keep your key fob in good condition. The most straightforward thing to do is to ensure that the battery inside your key fob isn't dead. Replace the battery to see if it solves your issue. If this doesn't work, you may need to open the fob and clean the contact surfaces. This can be tricky because some key fobs don't have a release mechanism that is easy to open them up and you could harm your device if you try to force it apart. You can buy a special tool to open your key fob, but it is recommended to follow the instructions of the manufacturer to avoid damaging it. A damaged or damaged key fob circuit board is another common problem. This can be caused by various factors like moisture or dirt that gets into the battery compartment software problems or even an unintentional firmware update. If your key fob has stopped working completely, consider having it reprogrammed by an expert locksmith who specializes in this type of work. Radio interference is another possibility. This could happen if there are other wireless devices that transmit on the same frequency your key fob, such radar detectors or home security systems. If this is the case, you should inquire 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 has an unreliable switch or electrical component that must be replaced. There are online guides that show you how to fix this yourself. It is important to be cautious when doing this, though, as the circuit boards inside your key fob are tiny and easily break if they are handled roughly. If you're doing it yourself, make sure to make use of an SMT switch of good quality and put the switch in place in a proper manner. Out Buttons Out Buttons Car key fobs are prone to a lot wear and tear. They are prone to being dropped, and they often spend a lot of time jostled around in your purse or pocket. Sometimes, this jolting can cause the buttons to wear out or become stuck. A simple adjustment can solve the issue. Modern key fobs are fitted with sensors that are able to detect when they have been hit. This is because they reduce the chance of someone else stealing your vehicle. If the buttons on your key fob don't respond when pushed it's a sign that they're worn out and need to be replaced. Key fobs also contain a circuit board inside them that transmits signals to the car. Those signals include unlock and lock commands and also instructions to start your engine. If the circuit board within your vehicle is damaged, your key fob will not be able to unlock or start your engine. This type of damage is usually caused by water or blunt force. You'll notice that the buttons on your key fob are wearing down if you find yourself pressing more than usual to get them to function. Your fob could be unable to send a signal to your vehicle or have a shorter range. Contact a locksmith right away in the event that you are unable to use your key fob to access your car. They'll be able determine whether the key fob itself is damaged or the ignition cylinder has worn out. Fortunately, nearby key repair shop of car key fob issues aren't too serious or complex. Keep an extra key fob in your car always in case you end up being thrown off by a malfunctioning one. This will ensure that you're never trapped in a place due to a lost or malfunctioning key. If you lose your spare key, a professional locksmith can reset it to work with your car's engine. They can also repair any internal damage to your key fob. Broken Case A key fob's case does more than just protect the buttons and battery. It also houses the circuit board responsible for all the electrical magic when you hit a button on your key fob. This board takes the signal from your key fob and sends it to your car. Your key fob will not function if the board is damaged. Sometimes, a key fob that is dead will just need to be reprogrammed which is something that your local auto locksmith or the dealership can assist you with. Another reason your key fob might not be working is that the batteries are not working. The battery can be replaced at home. The positive side is that you can locate the replacement battery on the internet or at your local auto parts store since these batteries are not exclusive to key fobs. There are a variety of ways to open up a key fob to get inside, based on the type. A quick internet search should identify the type of key fob yours is and what kind of battery it uses. From there, you can purchase an alternative and then simply pop the old one out and the new one in. When repairing a broken key fob, the main concern is not to damage the circuit or buttons more. If you attempt to pull off the key fob with an instrument like a screwdriver or any other sharp edge, it can crack the plastic or break the case. Fortunately, a replacement case is cheap and you can purchase an entire fob 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 depleted or whether the circuit board is damaged. If that's not the case, a professional can fix it quickly and cost-effectively. If not, it could be the time to purchase a replacement. Make sure you check the warranty on any fob replacement or used that you purchase on the internet.