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Citroen C3 Key Fob Replacement If your C3 key fob suddenly stopped working it could be because of an issue with the module. If the key fob remains operational, the issue could be caused by something else, like water damage or a dead coin battery. The eC3 is aimed at the mass market, and Citroen has worked to make service easy for customers. It comes with a variety of features, including virtual remote diagnosis as well as an app specifically for customer service. Dead coin battery If the key fob's unlock button isn't working, there is an issue with the coin battery. Battery life should be between three and four year with regular usage. However, it could abruptly die. Luckily, car makers have built-in fail-safes to ensure that you are able to lock and start your vehicle even if your key fob is dead battery. The battery in the key fob is secured by clips made of metal that form a circuit. The battery might not be charged if the clips are worn or dirty. Also, the battery needs to be the correct size and type. The battery won't fit in the fob if it's too large or small. Key fob batteries are sold under various names such as CR2016, and even CR2032. These are not interchangeable. Check out the owner's manual or look for a sticker on the fob that has the information. Once you've got the right battery that you want to replace, it can be done in a matter minutes. Most fobs come with either a slider or switch, or a gap that can be used to pry the cover off and replace the old battery. Make sure the new battery is of the same voltage and is inserted in the correct way. Water damage Water can be harmful to electronics, even if they have survived washing cycles or a dip. It can cause damage to batteries and cause serious damage to the electronic chip inside. There are several things you can do to limit damage. First, it's crucial to get rid of the battery and dry out the interior and circuit board as much as you can. You can also use a cotton swab dipped in 90-percent isopropyl alcohol to clean the battery and circuit board. After you've cleaned your key fob, wait a few days for it to completely dry. You can accelerate the process by placing it on a shelf that isn't disturbed. Once you are sure that the battery is totally dry, insert the new battery and use it in the same way as before. If your key fob is still not working it could be because the receiver module inside your car is malfunctioning and is unable to transmit signals. This can be quite expensive to fix, but it's worth trying to avoid having to buy a new one. The easiest way to fix a malfunctioning key fob is to change the battery. The radio signal should be restored and your key fob should work once you replace the battery. However, if the problem persists then you should seek out assistance from a professional. Receiver module that is defective In some cases the key fob's receiver module may be affected by a fault that stops it from receiving and transmitting the proper signal. In this case, the car will not recognize the remote control key. It will not unlock or start. In this instance it is likely that a replacement remote is required. The steps to reprogram the key fob differs based on model and make therefore, you should consult the owner's guide before trying to do it yourself. Ensure that the battery of the key fob is in good health and that all buttons work. Also, close the doors and disconnect any other aftermarket devices, such as alarm systems or radios from the vehicle. You might also try cleaning your chip using isopropyl alcohol, or an electronic cleaner. If the chip has become fried, you will need to replace it. Once you've cleaned the key fob, you can remove its circuit board. Clean the contacts using alcohol swabs. Let them dry. After the contacts have dried you can reassemble your key fob and test it. If the key fob doesn't work, then it might be required to replace the battery. Make sure you choose the new battery with the same voltage as your old one. It's recommended to check that the battery is installed correctly because the contact points are very sensitive. Keyless entry systems that aren't working properly It can be frustrating when the key fob stops working. It's generally easy to get your key fob back running. A dead battery for the coin is the most frequent cause of a malfunctioning fob. It can be repaired in just a few minutes. Other reasons include signal interference, the receiver module is defective and other electrical issues. try this website is to ensure that the battery is correctly placed and has the proper voltage. The correct type of battery is also vital. If you use a battery that is not properly sized or polarized batteries could harm the internal circuitry. It is also advisable to check the fuses to ensure they're not blown or have not melted. A transponder that is inside the key may be damaged or gone. This problem will require further diagnosis by a professional mechanic or car dealer. Auto locksmiths and dealers will reprogram the key fob on vehicles for a small fee. However it can be expensive. If you have a spare, it might be worthwhile to try reprogramming the fob yourself. In most cases, you can locate the steps in your owner's guide. If you don't own the manual, you can locate instructions on the internet or on YouTube. It is imperative to check the owner's manual prior to making any repairs on the key fob.