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How to Repair Car Key Fobs Although we test them many a times keys are not indestructible. They are able to break down in various ways. Other issues could be more serious than a dead battery. Fortunately, many 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 when they are exposed or humid temperatures, or water. Keep an extra battery in your wallet in case you need it. You will usually know that the battery of your car key fob is depleted because the LED light will cease to blink. The fob might be unable to function from the same distance it used to. In this instance, the key fob may require reprogramming or replaced completely. Fortunately, replacing a car key fob battery is a simple task. Find out the type of battery that is used. The type of battery you are using should be stamped on the back of your key fob. Google can help you if you're not sure. Once you've found the battery type you want to use, open the key fob at the seam. Make use of a flathead screwdriver or your fingernail to pry apart the two halves. Take the old battery out, and replace it with a new one. Make sure to insert the new battery with the positive (+) side facing upwards towards the buttons on the fob. Some drivers aren't aware that their fob has died until they lock or unlock their vehicle and the buttons stop working. In some instances this issue can be resolved by reprogramming the fob but that can be costly and time-consuming. You can also call roadside assistance to determine whether they can restart your car and get it back on the road. If repair car key tried every solution and your car still doesn't start, it's the right time to speak with a professional. A trained technician will be able to determine whether your vehicle's computer system requires reprogramming or the fob simply requires a new battery. They will also suggest a reputable auto repair shop to replace your fob's key. Sometimes, however, a new fob may be the best option. Circuit Board Damage A key fob is not indestructible, but it can be able to withstand a variety of physical damage. The circuit board, battery and buttons are all subject to wear and tear. It is crucial to take care of these parts to ensure that your key fob is in good working order. The easiest thing to check is to make sure the battery in your key fob isn't dead. Replace the battery to determine if it resolves your issue. If this doesn't work, you may need to open the fob and clean the contact surfaces. This can be a challenge since some key fobs do not have easy-release mechanisms that allow you to open them and you may end up damaging your key fob if attempt to break it. You can purchase a special tool to open your key fob. But, you must follow the directions of the manufacturer to avoid damaging the. Another problem that is frequently encountered is a damaged or faulty circuit board inside the key fob. This can be due to many things like dirt or moisture getting into the battery compartment, software issues or even an unintentional firmware update. If your key fob is not working, you may be interested in getting it replaced. This can be accomplished by a locksmith who is skilled in this kind of work. Radio interference is another possible cause. It could happen if you have other wireless devices that transmit on the same frequency, for example, radar detectors or home security systems. If this is the situation you must get in touch with the manufacturer of the other device to make sure that your key fob will not be affected by their signals. It is also possible to replace a switch or another electrical component of your key fob. This is a harder fix, but you can find guides online that explain how to fix it yourself. It is important to be cautious when doing this, though, as the circuit boards in the key fob are tiny and are susceptible to breaking when handled rough. If you decide to do this yourself, be sure to use a high quality SMT switch and solder it to the correct place. Buttons that are worn out Car key fobs are susceptible to a lot wear and tear. They're susceptible to being dropped and spend a lot of time jostled around in your purse or pocket. The jolting can cause buttons to wear out or become stuck. A simple adjustment can fix the problem. Modern key fobs are equipped with sensors that detect when they have been hit. This is because they lower the chance of someone else stealing your vehicle. If the buttons on your key fob aren't responding when pushed, that's an indication that they're worn out and require to be replaced. Key fobs also have an electronic circuit inside that sends signals to the car. These signals include commands to unlock and lock, as well as instructions to start your engine. If the circuit board inside your vehicle is damaged, your key fob might not allow you to unlock your car or even start the engine. Most of the time, this kind of damage is caused by water, blunt force, or something scratching the circuit board. You'll be able to tell that the buttons on your key fob are wearing down If you're finding yourself pressing the buttons more than normal in order to get them working. In addition, your fob may stop sending a signal to the car or have less range than before. Contact a locksmith right away if you are not able to use the key fob to access your car. They'll be able determine whether the key fob is damaged or the ignition cylinder has worn down. Fortunately, most key fobs for cars issues aren't very complicated or even serious. The best way to avoid being taken by surprise by an issue with your key fob is to have 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'll also be able fix any internal damage that may have occurred to the key fob. Broken Case The case of a key fob does more than just protect the batteries and buttons. The case also houses the circuitry that does all the electrical magic every time you press the key fob button. The circuit board relays the signal from your keyfob to your car. If the board is damaged or dead, your key fob won't be able to function. Sometimes a dead key fob will just need to be reprogrammed which is something your local auto locksmith or the dealership can help you with. Batteries could be the cause of your key fob not working. The battery can be replaced at home. You can get the replacement battery from the local auto parts store or on the internet. These batteries aren't only for key fobs. Depending on the kind of key fob, there is different ways to open it up and get inside. You can determine what type of battery your key fob has by conducting a quick online search. You can then purchase a new replacement and pop the old one out, and then insert the new one into. The biggest concern when repairing an old car key fob is that you don't want to cause damage to the circuit board or buttons any further. If you attempt to pull apart the key fob using an instrument like a screwdriver or any other sharp edge, it could break the plastic or damage the case. Fortunately, a replacement for the case isn't expensive and you can purchase an entire fob with the electronics on eBay or Amazon for less than $40. If your key fob doesn't work look into whether the batteries are depleted or whether the circuit board has become damaged. If that's not the situation, a professional could repair it quickly and inexpensively. Otherwise, it might be time to consider an upgrade. Just be sure to check for a warranty on any replacement or used fobs you buy online.