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How to Repair Car Key Fobs Key fobs can be damaged even if we utilize them a lot. They can actually break down in different ways. While the most common issue is the battery being dead, other issues can be more grave. Many of these issues can be resolved with a quick fix at home. Dead Battery A dead battery is the most common reason for the key fob not functioning. Fob batteries are prone to draining quickly, especially if they're exposed to extreme temperatures, humidity or water. Keep an extra battery in your wallet in case you need it. You will usually know when the battery in your car key fob is running low because the light on the LED will stop glowing. It's also possible that the fob will no longer work from 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. It is simple to replace the car keyfob battery. First, you need to determine the type of battery is used. The type should be embossed on the back of the fob. Google can assist you in case you're unsure. Open the key fob along the seam after you have identified the type of battery. You'll need small flathead screwdrivers or even your fingernail to break the two halves. Remove the old battery and replace it with a new one. Be sure to insert the new battery with the positive (+) side facing up toward the buttons on the fob. Some drivers may not be aware the fob is dead until they try to lock or unlock their car and the buttons aren't responding. This can be fixed by reprogramming the fob. However it can be time-consuming and expensive. You can also call roadside assistance to find out if they are able to jumpstart your car and get it back on the road. If you've tried every solution and your car still doesn't start, it's the right time to speak with an expert. A trained technician will be able to determine if the car's computer system needs reprogramming or if the fob needs an upgrade in battery. They may also recommend an auto shop to replace the fob that you use to access your car. Sometimes an entirely new fob might be the best solution. Circuit Board Damage A key fob is able to withstand many physical abuses and is not indestructible. Battery, circuit board and buttons are all susceptible to wear and wear and tear. It is essential to take care of these parts to ensure your key fob remains in good condition. The most straightforward thing to do is to make sure the battery in your key fob isn't depleted. If it is then replace the battery and see if that fixes your issue. If not, you may require opening the key fob and clean the contact surfaces. This can be a challenge because some key fobs don't have easy-release mechanisms to open them up, and you can easily damage your fob if you try to pull it apart. You can buy a special tool to open your key fob, but you should always follow the instructions of the manufacturer to avoid damaging it. A damaged or defective key fob circuit board is another frequent issue. It can be caused by various factors, such as moisture or dirt that gets into the battery compartment, software issues or even an accidental firmware update. If your key fob isn't functioning completely, you should think about having it reprogrammed with a locksmith that specializes in this kind of work. Radio interference is another possibility. It could happen in the event that you have other wireless devices around that transmit at the same frequency, such as 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 is equipped with an unreliable switch or electrical component that should be replaced. This is a harder fix however, there are online guides that will show you how to fix it yourself. Be cautious when doing this, though, as the circuit boards that are inside your key fob are small and can break easily in the event of rough handling. If you decide to do this yourself, make sure to use a good quality SMT switch and solder it into place properly. Worn Out Buttons Car key fobs can suffer a lot of wear and tear. They're prone to being dropped and are frequently being tossed around in your pocket or purse. Sometimes, this can cause the buttons to wear out or become stuck. If this happens an easy adjustment could be all that's needed to get it working again. Modern key fobs are fitted with sensors that are able to detect when they've been hit. They're designed to do this because they can help lower the risk of theft by someone else of your vehicle. If your key fob's buttons aren't responding when you press them, that's an indication that they're worn out and need to be replaced. Key fobs also contain an internal circuit board which transmits signals to your car. These signals include commands to unlock and lock your car, and commands to start your engine. If the circuit board inside is damaged, then your key fob might not allow you to unlock or start your engine. nearby key repair shop of damage is usually caused by blunt force or water. If you're having to press the buttons more than normal to get them to function, then your key fob's buttons are wearing out. Your fob might be unable to send a signal to your car or have a smaller range. If you're unable to unlock your key fob, unlock or start your car, it's important to contact an emergency locksmith in your area. They can determine if the key fob is damaged or if the cylinder in your ignition is worn out. Fortunately, most key fob issues in cars aren't serious or complicated. The best way to avoid getting taken by surprise by a malfunctioning key fob is to keep a spare in your possession at all times. You'll never be caught in the middle due to 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 repair any internal damage to your key fob. Broken Case The case of the key fob is more than just shield the batteries and buttons. It also houses the circuit board that is responsible for performing all the electrical magic when you press a button on your key fob. This board receives the signal from your key fob and sends it to your car. Your key fob will not function if the board is damaged. A dead key fob might require reprogramming by a local auto locksmith or dealer. Batteries could be the reason your key fob's battery not working. This is a simple fix that can be accomplished at home by replacing the battery. You can purchase an alternative battery at your local auto parts shop or online. These batteries are not only for key fobs. Depending on the kind of key fob you have, there are various ways to open it and gain access to the inside. A quick internet search should identify the type of key fob yours is and the type of battery it takes. You can then purchase an alternative and take the old one out, and then put the new one into. When fixing a damaged key fob, the most important concern is not to destroy the circuit or buttons more. When you try to break the fob using a sharp edge, such as screwdrivers can break the case or damage the plastic. Fortunately, a replacement for the case isn't expensive and you can buy an entire fob with the electronics on eBay or Amazon for less than $40. So, if your key fob isn't functioning look into whether the batteries are dead or if the circuit board is damaged. If this isn't the situation, you can get it repaired quickly and inexpensively by a professional. In the event that it isn't, it's the time to purchase an upgrade. Make sure you check for a warranty on any used or replacement fobs you buy on the internet.