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How to Repair Car Key Fobs Although we use them a lot keys aren't indestructible. In fact, they are able to break down in many different ways. Other issues can be more serious than an unresponsive battery. Fortunately, the majority of these can be fixed by a simple DIY fix at home. Dead Battery A dead battery is the most frequent cause of the key fob not functioning. Fob batteries can be drained quickly, especially if they're exposed to extreme conditions like humidity, temperatures or even water. It is a good idea to keep an extra fob battery in your wallet just in case. It is easy to tell when the battery of your car key fob is depleted because the light on the LED will cease to blink. It's also possible that your key fob won't function from the same distance it did in the past. In this scenario it might be necessary to reprogram the key fob or replace it altogether. It is simple to replace the car keyfob battery. Find out the type of battery used. The type should be engraved on the back of the fob. If you are not sure then doing a quick Google search will be helpful. Once you've found the kind of battery you want and the key fob, you can open it at the junction. Make use of a flathead screwdriver or even your fingernail, to separate the two halves. Then, take out the battery that was removed and replace it with a new one in its place. 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. In some cases this issue can be resolved by reprogramming the fob however, this can be expensive and time-consuming. You can also call roadside assistance to determine whether they can restart your vehicle and get it back on the road. If you've tried both solutions and your car still doesn't turn on, it's time to call an expert. A qualified technician can determine if your vehicle's computer system requires reprogramming or the fob simply requires an upgrade in battery. key fob repairs can also recommend a reputable auto repair shop to replace your fob's key. In the end, though sometimes, a brand new fob is the best solution. Circuit Board Damage Key fobs aren't indestructible, but it can be able to withstand a variety of physical harm. The battery, the circuit board and buttons will all experience their fair share of wear and tear over the course of time and it's crucial to be on guard and take care of them to keep your car key fob working well. Make sure that the battery still working on your key fob. If it is replaced, check if it fixes your issue. 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 to open them, and you can easily harm your device if you try to force it apart. You can buy a special tool to open your key fob, but you should always follow the manufacturer's instructions to avoid damaging it. Another common problem is a damaged or damaged circuit board on the key fob. It can be caused by many things, such as dirt or moisture getting into the battery compartment software problems or even an accidental firmware update. If your key fob isn't working, you may want to consider getting it changed. This can be done by a locksmith who specializes in this work. Radio interference is another possibility. This can happen if there are other wireless devices operating on the same frequency as your key fob, like radar detectors or home security systems. If this is the case you must get in touch with the manufacturer of the other device to ensure that your key fob will not be affected by their signals. It's also possible that your key fob may have an unreliable switch or electrical component that should be replaced. You can find online guides that will help you fix this yourself. Be careful when doing this, however, because the circuit board in your key fob is small and can easily break when handled rough. If you decide to do this yourself, make certain to use a top quality SMT switch and solder it into place properly. Worn Out Buttons Car key fobs can suffer quite a bit of wear and tear. They are more prone to being dropped and spend a lot of time in your pocket or purse. Sometimes, this jostling can cause the buttons to become worn out or become stuck. A simple adjustment can solve the issue. The majority of modern key fobs have sensors on them that can detect if they've been pressed. They're made to do this so that they can decrease the chance of thieves stealing your car. If the buttons on your key fob don't respond when you press them, they're damaged and should be replaced. The circuit board in the key fob transmits signals to your 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, the key fob you have may not be able to unlock your vehicle or start the engine. Typically, this type of damage is caused by water, force blunt or something that scratches the circuit board. You'll notice that the buttons on your key fob are wearing out when you press more than normal in order to get them working. Your fob could not be sending an alert to your car or have a lower range. Contact a locksmith immediately when you're not able to use the key fob to access your car. They'll be able to determine whether the key fob is damaged or the ignition cylinder is worn out. Fortunately, most car keyfob issues aren't very complicated or even serious. The best way to avoid getting taken by surprise by an issue with your key fob is to keep an extra key in your possession at all times. This will ensure that you're never trapped in a place because of an unreliable or lost key. If you do lose your spare car key A locksmith can change the key so that it works with the ignition in your car. They'll also be able to fix any internal damage that's occurred to your key fob. Broken Case The case of the key fob does more than protect the buttons and batteries. The case also houses the circuitry that executes all the electrical magic whenever you press a key fob button. This board takes the signal from your key fob and sends it to your car. The key fob won't function if the board is damaged. A dead key fob might require reprogramming by your local auto locksmith, or dealership. Batteries may be the cause of your key fob not working. This is a quick fix that can be accomplished at home by replacing the battery. You can get an alternative battery at the local auto parts store or online. These batteries aren't only intended for key fobs. Depending on the kind of key fob, there are various ways to open it and access the insides. A quick internet search should reveal what kind of key fob you have and what kind of battery it requires. You can then buy a new replacement and pop the old one out and then put the new one in. The main concern when you repair the broken car key fob is that you don't want to harm the circuit board or buttons any further. If you attempt to pry away the key fob with a screwdriver or other hard edge, it could crack the plastic or damage the case. A replacement case isn't much and you can purchase the entire fob including the electronics on eBay or Amazon for under $40. If your key fob won't function, make sure you've damaged the circuit board or batteries. If this isn't the case, a professional will repair it for you quickly and cheaply. If not, it may be time to replace the fob. Just be sure to check for a warranty on any replacement or used fobs that you purchase on the internet.