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Citroen C3 Key Fob TroubleshootingThe Citroen c3 keyfob may cease to function due to many reasons. Some of them include worn buttons, poor contact with the battery, water damage and receiver module problems. It is also recommended to check the battery's 12 volts.Deprogramming could be the cause the key fob's not unlocking your car. citroen c3 replacement key www.thekeylab.co.uk occurs when certain buttons send an alert to the onboard computer to erase the key from its access list.Dead coin batteryIf the fob that you use to open the door on your Citroen C3 is no longer functioning, first check if the battery has failed. The batteries that are in the fobs are small round coins that can be easily replaced in just a few minutes. They are sold in general stores, home improvement stores, and auto parts stores. Be sure to buy the correct kind. The majority of fobs require CR2025 or CR2032 However, it is recommended to look through the owner's guide to determine the type of battery your vehicle requires.Before replacing the battery, take off the button pad and rub it with cotton swabs or alcohol. They will remove the corrosion and clean the contacts, which typically have a gold color. Once the contacts have been cleaned, it is now time to insert the new battery. Be careful not to mix the two batteries as they have different voltages, dimensions, and shapes.The next step is to examine the battery's voltage. You can get a reliable reading with a multimeter that is set to the battery's voltage range. If the battery's reading is in the middle or above the threshold, then it needs to be replaced. Try to start your car using a spare key, however this may not be successful in all instances. If the issue persists then visit a CITROEN dealer with your V5 registration form and personal identifi cation documents. A CITROEN Dealer can retrieve the code for the immobiliser on your vehicle and purchase a new battery.Water damageIf the key fob falls under water, it could lose its signal to the car. It is advised to get it out as soon as you can from the puddle or pool. Once you have done that, dry out the circuit board as best you can using the help of a cotton swab, dipped into isopropyl ethanol or electronic cleaner. If the key fob isn't working, it may be time to get an additional one.Signal interference is another frequent reason for Citroen remote control not working. This can occur when there is a strong electrical field that is close to the vehicle or from other transmitters operating on the same frequency. The key fob should begin to work again once you are out of the area of interference.Finally, the Citroen C3 key fob might cease to function due to worn buttons signals, signal interference, receiver module issues or a dead 12 Volt battery, or a damaged electronic chip. It will need to be reset in the event of this. This can be done by a skilled mechanic or at an Citroen dealership. If the issue is severe it may be necessary to replace it. It's a fairly simple and affordable fix. However, you need to act quickly. The longer you take to resolve the issue, the more severe it will be. It could pose a risk to passengers and you when the issue is not addressed.Receiver Module IssueIf your key fob stops working, it could be due to the receiver module having developed a fault. This can be caused by various factors that include water damage. It can happen when you lose your keys, or wash them. You can try to fix the problem by taking off the chip and cleaning it with isopropyl and electronic cleaner. This will keep the chip from getting damaged.You can reset the receiver module when you disconnect it from the battery and wait 10 seconds. Then, reconnect the battery and repeat the process. If this doesn't resolve the issue, go to a dealer to have it replaced.Interference can also cause your key to stop working. It could be caused due to other transmitters that use the same frequency as your key fob, or even objects in your vehicle. If you are unable to resolve the issue, go to a dealer to have your key fob reset.The key fob contains a short-range radio transmitter/radio-frequency identification (RFID) chip and antenna, which sends a distinct coded signal to the receiver module in your car. If the signal is not right the receiver will not recognize the car key and display a message stating "key not recognized". This can be a frustrating issue especially when trying to start your car.Dead 12 volt batteryIf your key fob ceases working after the battery has been changed it could be damaged. This is most likely to happen if your key fob has been dropped or stepped upon, but can also happen after a service that requires the removal of the panels and reinstallation. When these panels are removed, wires are exposed. If your fob is damaged, you might have to replace it completely.A remote that receives interference from other devices and locations is also a possibility. This can cause RF signals to weaken, preventing the car from being able to recognize the remote. You can reset your on-board computer in this scenario by disconnecting your 12-volt battery for 15 minutes. This will take away any remaining power, allowing the system to restart.It is essential to verify the size and type of the battery prior to replacing it. If the battery you replace isn't big enough or has an unsuitable voltage, it could harm the circuit board within the fob's key. You should also remove any corrosive materials off the chip in the fob prior to installing a new battery. Making sure you choose the right battery will ensure that it is sealed and protected from moisture. Once the key fob is replaced, it should work normally. It is possible to use the second key if your car displays a message that reads "key is not recognized." You may need to press the button several times before it responds.