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How to Repair Car Key Fobs Even though we test them a lot keys aren't impervious to destruction. In fact, they are able to break down in a variety of ways. Other issues could be more important than an unresponsive battery. Fortunately, many of these issues can be solved by a simple DIY fix at home. Dead Battery A dead battery is probably the most common reason why a car key fob stops functioning. Fob batteries can deplete quickly, especially if they are exposed to hot or cold temperatures, humidity, or water. It's a good idea to keep an extra fob battery in your wallet in case. It is easy to tell that the battery in your car key fob is running low by the fact that the LED light will stop glowing. It's also possible that the fob won't function from the same distance as it used to. In this scenario it might be necessary to re-program your key fob or replace it altogether. It is easy to replace the car keyfob battery. Find out the type of battery used. The type of battery should be engraved on the back of the fob. If you're not sure then doing a quick Google search will be helpful. Once you've found the type of battery, open the key fob at the junction. Make use of a flathead screwdriver or even your fingernail to break the two halves. Then, remove the battery that was removed and replace it with the new one in its place. Be sure to insert the new battery with the positive (+) side facing upwards towards 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. This can be corrected by reprogramming the fob. However it could be time-consuming and expensive. You can also call roadside assistance to see if they are able to jumpstart your car and get it back on the road. If you've tried all the options and your vehicle still won't start, it's the right time to contact an expert. A qualified technician can determine if the vehicle's computer system requires reprogramming or the fob simply requires a replacement battery. They can also suggest an auto shop that will replace the fob that you use to access your car. Sometimes it is possible that a new fob could be the best option. Circuit Board Damage 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 subject to wear and wear and tear. It is essential to take care of these components to keep your key fob in good working order. The most straightforward thing to do is that the battery in the key fob isn't dying. Replace the battery to see if it solves your problem. If this does not work, you might need to open the fob and clean the contact surfaces. It is sometimes difficult to open some key fobs due to the fact that they don't have an easy release mechanism. You could cause damage to the fob by trying to take it apart. You can buy a tool to open your key fob. But, you must always follow the instructions of the manufacturer to avoid damaging the. A damaged or damaged key fob circuit board is another frequent issue. This can be caused by many things like dirt or moisture getting into the battery compartment software, hardware issues, or even an accidental firmware update. If your key fob is not functioning, you might be interested in having it replaced. This can be accomplished by a locksmith who specializes in this kind of work. Radio interference is another possible cause. This could happen if there are other wireless devices operating on the same frequency as your key fob, for instance radar detectors, home security systems. If this is the case, inquire with the other manufacturers of your device to make sure that your key fob isn't affected by their signals. You may also need to replace a switch or other electrical component of your key fob. This is a more difficult fix however, you can find guides online that explain how to do it yourself. Be careful when doing this, however, because the circuit board inside your key fob is small and is prone to breaking if handled with care. If you do this yourself, make sure to use a good quality SMT switch and then solder it into place properly. Worn Out Buttons Car key fobs are susceptible to a lot wear and wear and tear. They are prone to being dropped and spend a lot of time moving around in your pocket or purse. This jostling can sometimes cause the buttons to wear down or become stuck. A simple adjustment can solve the issue. Most modern key fobs come with sensors on them that can detect when they've been used. This is because they lower the chance of someone else stealing your vehicle. If the buttons on your key fob aren't responding when you press them, that's an indication that they're worn-out and need to be replaced. The circuit board inside the key fob also sends signals to your car. These signals include unlock and lock commands, as well as commands to start your engine. If the internal circuit board is damaged, then your key fob might not unlock or start your engine. Generally, this kind of damage is caused by water, force blunt, or something scratching the circuit board. You'll notice that the buttons on your key fob are wearing down If you're finding yourself pressing the buttons more than usual to get them to function. Additionally your fob could cease transmitting signals to the car, or have less range than it did prior to. If car remote key repair 're not able to get your key fob to unlock or start your car, you need to call a locksmith near you immediately. They'll be able to determine whether the key fob itself is damaged or if your ignition cylinder is worn out. Fortunately, the majority of key fob issues in cars aren't serious or complicated. The best way to avoid being caught off guard by a malfunctioning key fob is to keep a spare in your possession at all times. This will ensure that you're not left stranded somewhere because of a lost or malfunctioning key. If you lose your spare key, an expert locksmith can rekey it to work with your car's engine. They'll also be able to repair any internal damage that has occurred to the key fob. Broken Case The case of the key fob does more than protect the batteries and buttons. It also houses the circuit board that is responsible for all the electrical magic when you press the button on your key fob. The circuit board relays the signal from your keyfob to your car. The key fob won't work if the board is damaged. A key fob that is dead may only need to be reprogrammed by your local auto locksmith, or dealer. Another reason why your key fob may not be working is that the batteries are dying. This is a simple solution that can be done at home by replacing the battery. You can purchase the replacement battery from your local auto parts shop or on the internet. These batteries are not only intended for key fobs. There are several ways to open up the key fob and go inside, based on the kind. A quick search online should identify the type of key fob you have and the type of battery it requires. You can then purchase a new one, take the old one out and then insert the new one in. The main concern when you repair the broken car key fob is that you don't want to damage the circuit board or buttons any further. If you attempt to pry off the key fob with an instrument like a screwdriver or any other sharp edge, it can crack the plastic or damage the case. A replacement case isn't expensive and you can purchase a complete fob assembly including the electronic components on eBay or Amazon for under $40. If your key fob isn't working Check to see if the batteries are depleted or whether the circuit board is damaged. If this isn't the case, you can have it repaired quickly and inexpensively by a professional. If not, it could be the time to purchase an upgrade. Make sure you check for a warranty on any used or replacement fobs you buy on the internet.