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Citroen C3 Key Fob Replacement If your C3's key fob stops suddenly, it could be due to a malfunctioning receiver module. If the key fob is operational, the issue could be due to something else, like water damage or a dead battery for the coin. The eC3 is going after the mass market and Citroen has focused on making service easier for customers. It has a range of features, such as remote diagnostics through virtual computers and a specialized customer service application. Dead coin battery If the key fob's unlock button isn't functioning, there could be a problem with the battery of the coin. The battery is expected to last between three and four years if used regularly, but it can die abruptly. Fortunately, car manufacturers have built-in fail-safes so that you are able to start and lock your vehicle even if the key fob is dead battery. The battery in the key fob is held in place with metal clips that complete the circuit. If they are worn out or dirty, the battery will not be able to receive electricity. The battery must also be the correct size and type. The battery will not fit into the fob if it is too large or small. Key fob batteries are usually sold under different names, like CR2016 and CR2032 (though these are not interchangeable). The best way to know which type to purchase is to refer to your owner's manual or look at the fob to find the label that provides the exact details. If you've found the right battery and it's replaced, it's possible to replace it in just a few moments. Most fobs have a slider, gap, or switch that you can use to pry open the cover and exchange the old battery to get an alternative. Make sure the new battery has the same voltage as your old one and is correctly inserted. Water damage Water can be harmful to electronics even if they've been through a wash cycle or a dip. It can cause damage to the chip, and even destroy a battery. Fortunately, there are some actions you can take to minimize the damage. It is important to first take out the battery, then dry out the interior as much as you can. You can also clean the battery using a cotton-swab that has been dipped in 90 percent alcohol. After you've cleaned the key fob, wait for a few days to completely dry. You can accelerate the process by placing it on a high shelf where it won't be disturbed. Once you're certain that the battery is completely dry, replace it with a new one and use it in the same way as before. If your key fob not working, it could be that the receiver module in your car is faulty and is unable to transmit signals. It can be expensive to repair, but worth it if your goal isn't to replace your vehicle. The simplest way to fix a malfunctioning key fob is to change the battery. The radio signal will be restored and your key fob will work again after changing the battery. However, if the problem persists and you are unable to resolve it, you should seek assistance from a professional. Faulty receiver module In certain situations the key fob's transmitter module may be affected by a fault that stops it from receiving and transmitting the correct signal. In this situation the car will not recognize the remote control key. It won't unlock or start. In this situation, a replacement remote control will be required. Consult your owner's guide before trying to reprogram the key fob on your own. Check that the battery on the key fob is in good working order and that all buttons are functioning. You should also close the doors and disconnect any additional devices such as alarm systems or radios from the vehicle. You could also try cleaning the chip using isopropyl alcohol or electronic cleaner. If the chip has become damaged, it will probably need to be replaced. After cleaning the key fobs, remove the circuit board. Clean the contacts using alcohol swabs. Let them dry. Once the contacts are dry then you can reassemble the key fob and test it. If the key fob still isn't working, it could be required to replace the battery. Make sure to use the new battery with the same voltage as the old one. Verify the battery's position as the contact points are very sensitive. A malfunctioning keyless entry system It can be very frustrating when the key fob stops functioning. The good news is that the majority times, it's easy to get it working again. A dead battery in the coin slot is the most frequent reason for a malfunctioning fob. This can be easily replaced in a matter of minutes. Other causes include signal interference, the receiver module is defective and other electrical issues. The first step is to make sure that the battery has the right voltage and is correctly put in. It is also important to use the correct battery type. The internal circuitry of the device could be damaged if you use an unsuitable battery. the right size or one that is not polarized. Examine the fuses for damage or burned. Another possibility is that the transponder in the key could have been damaged or gone missing. This is a problem that will require further diagnostics by a dealer in the car or professional mechanic. Dealerships and auto locksmiths will reprogram the key fob of the vehicle for a fee. However, this can be costly. If citroen berlingo replacement key cost thekeylab.co.uk have a spare, it might be worth attempting to reprogram the fob yourself. The instructions are usually found in the owner's manual. If you do not have the manual, you can find instructions online or on YouTube. Before attempting to fix the key fob, it's important that you consult the owner's guide.