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How to Repair Car Key Fobs Although we use them numerous times keys are not impervious to destruction. In fact, they are able to be destroyed in a variety of ways. Other issues can be more serious than a dead battery. Most of these issues can be resolved with a quick fix at home. Dead Battery A dead battery is likely the most frequent reason the car key fob stops working. Fob batteries are prone to draining quickly, particularly if they're exposed to extreme temperatures, humidity or water. Keep an extra battery in your wallet in case you need it. The LED light will generally stop glowing when the battery in the car key fob is low. It's also possible that your key fob won't work at the same distance it did in the past. In this case, it may be necessary to re-program the key fob or even replace it entirely. Fortunately, replacing the car key fob battery is a simple task. Find out the kind of battery used. The type of battery you are using should be engraved on the back of your key fob. If you are not sure, doing a quick Google search will be helpful. Unlock the key fob across the seam after you have identified the battery type. You will need to use a small flathead screwdriver or even your fingernail pry the two halves apart. Then, take out the battery that was removed and replace it with an alternative one in its place. Make sure you insert the new battery with the positive (+) side facing up toward the buttons in the fob. Some drivers don't realize that their fob has gone out of service until they lock or unlock their car and the buttons don't work anymore. In some cases, this can be solved by reprogramming your fob, however, it can be costly and time-consuming. You can also contact roadside assistance to determine whether they are able to restart your car and get it back on the road. If you have tried both of these solutions and your car is still unable to start, then it's time for an expert. A qualified technician can determine if your car's computer needs reprogramming, or if the fob is only in need of replacement batteries. They can also recommend a reputable auto shop to replace your fob's key. Sometimes it is possible that a new fob could be the best option. Damaged Circuit Board A key fob is not impervious to destruction, but it can endure a lot of physical harm. The circuit board, battery and buttons are all susceptible to wear and wear and tear. It is crucial to take care of these parts to ensure that your key fob is in good condition. The most straightforward thing to do is to make sure the battery in the key fob isn't dying. If it is, replace the battery and check if it fixes your issue. If this doesn't work, you may need to open the fob and clean the contact surfaces. This can be difficult since some key fobs do not have a release mechanism that is easy to open them up and you may harm your device if you try to pull it apart. You can purchase a specific tool to open your key fob, however it is recommended to adhere to the manufacturer's guidelines to avoid damaging it. A damaged or defective key circuit board for the fob is another common problem. It can be caused by a number of things like dirt or moisture getting into the battery compartment software problems or even an accidental firmware update. If your key fob has stopped functioning completely, you should consider having it reprogrammed by an expert locksmith who specializes in this kind of work. Radio interference is a different possibility. This could happen if there are other wireless devices that transmit at the same frequency as your key fob, for instance radar detectors, home security systems. If this is the case, consult with other device manufacturers to make sure that your key fob's signal isn't affected by their signals. It's also possible that your key fob is equipped with an issue with the switch or another electrical component that should be replaced. There are online guides that guide you through the process of fixing this yourself. Be careful when doing this, however, because the circuit board in your key fob is small and is prone to breaking when handled rough. If you're doing 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 quite a bit of wear and tear. They are prone to being dropped and often spend a lot of time jostled around in your pocket or purse. The constant jostling can cause buttons to wear out or become stuck. If this happens it's possible that a simple adjustment will be all it takes to make it work again. Modern key fobs are equipped with sensors that can detect when they've been hit. This is due to the fact that they decrease the possibility of someone taking your vehicle. If the buttons on your key fob don't respond when you press them, they're worn out and need to be replaced. Key fobs also contain a circuit board inside them that sends signals to the car. These signals include commands to unlock and lock your car, and commands to start the engine. If the circuit board inside your vehicle is damaged, your key fob may not allow you to unlock your car or even start the engine. This type of damage is typically caused by water or blunt force. If you have to press the buttons harder than usual in order to activate them the fob's buttons are becoming worn out. The fob may also stop sending signals to your car or have a smaller range. If repair broken car key unlock your key fob, unlock or start your car, it's important to contact a locksmith near you immediately. They'll be able to determine whether the key fob itself is damaged or your ignition cylinder has worn out. Fortunately, the majority of car keyfob problems aren't too difficult or serious. Keep a spare key fob in your car at all times to avoid being thrown off by a malfunctioning key. This will ensure that you're never stuck in a bind because of an unreliable or lost key. Of course, if you do happen to lose your spare car key A locksmith can reset it so that it works with the ignition in your car. They'll also be able to repair any internal damage that's been caused to your key fob. Broken Case The case of your key fob does more than just protect the battery and buttons. The case also houses the circuitry that does all the electrical magic every time you press the key fob button. The board transmits the signal from your keyfob to your car. Your key fob will not work if the board is damaged. A dead key fob may require reprogramming by a local auto locksmith or dealership. Batteries may be the cause of your key fob not working. The battery can be replaced at home. The good news is that you can get the replacement battery on the internet or at a local auto parts store since the batteries aren't limited to key fobs. There are a variety of ways to open up the key fob and go inside, based on the type. You can determine the type of battery your key fob uses by conducting a quick online search. From there, you can buy a replacement and easily pop the old one out, and then the new one in. The most important thing to consider when fixing a broken car key fob is that you don't want to damage the circuit board or buttons any further. If you attempt to remove a key fob with an edge that is sharp like a screwdriver could damage the case or even scratch the plastic. A replacement case isn't much and you can buy an entire fob, including the electronic components on eBay or Amazon for under $40. If your key fob won't work, you should check if you have damaged the circuit board or the batteries. If this is not the case, you can have it repaired quickly and easily by a professional. If not, it might be time to replace the fob. Make sure you check the warranty on any replacement or used fobs that you purchase on the internet.