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Citroen C3 Key Fob Replacement If your C3's keypad stopped completely it could be due to a defective receiver module. If the key fob remains operational, the issue could be due to something else, like water damage or a dead coin battery. The eC3 is targeting the mass market, and Citroen has worked to make service simple for customers. It has a range of features including virtual remote diagnosis and an app specifically designed for customer service. Dead coin battery If the unlock button on the key fob does not work, it could be that the battery inside the coin is defective. Battery life should be between three and four year with regular use. However, it is possible that it will abruptly die. The automakers have created fail-safes that allow you to lock and start your car even if your key fob is dead. The battery on the key fob is held in place with metal clips that complete an electrical circuit. If the clips are worn or filthy, the battery might not receive the power. Also, the battery needs to be the right size and type. If the battery is too small or large, it will not fit on the fob and will not function properly. Batteries for key fobs are sold under many names like CR2016 or CR2032. These batteries are not interchangeable. The best way to know the type to buy is to read the owner's manual or look over the fob for the label which provides you with the precise information. If you've found the right battery, it can be replaced in just a few moments. Most fobs have either a slider or switch or a gap that can be used to pry the cover and replace the old battery. Make sure the new one is of the same voltage and is inserted in the correct way. Water damage Water is bad for electronics even if they've been through an wash cycle or dip. It can cause damage to the chip and ruin a battery. Fortunately, there are some things you can do to limit the damage. It is important to first take out the battery, then dry out the interior as possible. You can also employ a cotton swab that has been dipped in 90 percent isopropyl alcohol to clean the battery and the circuit board. After you've cleaned the key fob, wait a few days for it to completely dry. You can speed it up by placing it high on a shelf so it won't get disturbed. After you've confirmed that it's bone dry put in a new battery and operating it in the same way as you normally would. If citroen c3 replacement key www.thekeylab.co.uk fob doesn't work, you may have a problem with the receiver module that cannot transmit signals to your vehicle. This can be quite expensive to fix, but it's worth trying if you want to avoid having to buy a new one. The simplest method to fix a damaged key fob is to replace the battery. Changing the battery should restore the radio signal and make your key fob work again. If the issue persists you should seek professional assistance. A malfunctioning receiver module In certain situations the key fob's transmitter module may have a defect that is preventing it from receiving or transmitting the proper signal. If this is the case, your car won't recognize your remote control key and will not be able to unlock or start the engine. In this case you'll need another replacement. Check out the owner's guide prior to attempting to modify the key fob by yourself. First, ensure that the battery of the key fob is in good working order and that all buttons are working. It is also recommended to shut the doors and disconnect any other aftermarket devices, such as radios or alarm systems from the vehicle. You can also clean the chip using isopropyl or electronic cleaner. If the chip is fried, it will probably need to be replaced. After you've cleaned your key fob, take it off its circuit board. Then apply alcohol swabs clean the contacts and let them air dry. After the contacts have dried then you can reassemble and test the key fob. If it's not working you may have to replace the battery. Make sure you use the latest battery that has the same voltage as the previous one. It is recommended to double-check that the battery is in correctly in the first place, since the contact points can be very sensitive. Keyless entry system that isn't working properly The key fob can be a fantastic convenience in vehicles However, it can be frustrating when it stops working. The good news is that the majority of the time, it's easy to get it back up and running. A dead battery in the coin slot is the most common cause of a malfunctioning fob. This can be easily replaced in a matter of minutes. Other causes are signal interference, the receiver module is defective and other electrical issues. The first step is to make sure that the battery is properly inserted and has the right voltage. It is also crucial to use the correct type. The internal circuitry of the device could be damaged if you use the wrong battery, or one that isn't the proper size or the correct polarized. Check the fuses for damage or if they have melt. Another possible problem is that the transponder contained in the key might have been damaged or gone missing. This issue will require an examination by a professional mechanic or dealer in cars. Auto locksmiths and dealers will reprogram the key fobs of vehicles for a small fee. However, this can be costly. It could be worthwhile to reprogram your spare fob in case you have one. It is possible to find instructions in the owner's manual. If you don't have the manual, you can look up instructions online or on YouTube. It is imperative to check the owner's manual prior to making any repairs to the key fob.