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Citroen C3 Key Fob Troubleshooting The key fob of the Citroen C3 can cease to function due to various reasons. Some of them include worn buttons, poor contact with the battery, water damage, and receiver module issues. You should also examine the battery's 12 volts. If the key fob can not unlock your car, you might be experiencing deprogramming. This happens when certain button sequences send an alert to the onboard computer to remove the key from its list of access. Dead coin battery If the fob that you use to open the door on your Citroen C3 is no longer working, first determine if the battery has gone out. Fobs utilize small coins-shaped batteries that can be replaced within a few minutes. You can find these in general stores, home improvement stores, and even auto parts stores. Make sure you purchase the correct kind. Batteries for fobs are typically CR2025 or CR2032 However you must consult the owner's manual of your vehicle to determine what type is required. Remove the button pad and use cotton swabs and alcohol to clean it. They will remove the corrosion and clean the contacts, which are typically colored gold. Once the contacts are cleaned, you can install the new battery. Be careful not to mix the two batteries as they have different voltages, dimensions and shapes. The next step is to check the battery's voltage. You can obtain a precise reading using a multimeter that is calibrated to the battery's voltage range. If the battery is at an amount that is above or below its threshold, it has to be replaced. You can also try starting your car with an additional key, however this might not be effective in all cases. If the issue continues go to an CITROEN dealer with your V5 registration documents and personal identification documents. A CITROEN dealer can locate the code for the immobiliser on your vehicle and request an alternative battery. Water damage If the key fob is submerged, it could lose its signal to the car. If this happens, it's a great idea to remove it of the puddle, pool or washing machine as fast as possible. After this then use an swab of cotton and isopropyl or electronic cleaner to dry the circuit board. If the key fob isn't working, it could be time to buy another one. Another common reason that can be the reason behind Citroen remote control c3 not working is signal interference. This could happen if there is an electrical field in the vicinity of the car or other transmitters operating on the same frequency. The key fob should begin to work again once you are out of the zone of interference. The Citroen C3 key fob might be inoperable due to worn buttons problems with signal interference, receiver module issues or a dead 12-volt battery, or a defective chip. You'll have to get it reset if this happens. This can be done by a trained mechanic or at a Citroen dealership. If the issue is serious it may be necessary to replace it. It's a fairly simple and affordable fix. But you should take action quickly. citroen dispatch remote key replacement The Key Lab delay fixing the issue, the more difficult it becomes. If the issue isn't fixed, it can be dangerous for passengers and you. Issue with the Receiver module If your key fob isn't functioning it could be because the receiver module might have developed a fault. Water damage is among the many causes. This can happen when you lose your keys or wash them. You can try to fix it by removing the chip and cleaning it with isopropyl or electronic cleaner. This will prevent the chip from corroding. You could also try to reset the receiver module by disconnecting it from the car battery and letting it sit for 10 seconds. Then, reconnect the battery to the vehicle and repeat the process. If this does not fix the issue, you can take it to a dealer to be repaired. Another reason your key could stop working is due to interference. It could be caused by other transmitters using the same frequency, or by objects inside your vehicle. If you're unable to fix the issue, you can go to a dealership to change the key fob's programming. 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 isn't correct, the receiver module won't recognize the key and display the message “Key not detected. This could be a very frustrating issue, particularly when trying to start your vehicle. Dead 12 volt battery It is possible that the key fob you have purchased has been damaged if it ceases to function after a change in batteries. This is more frequent in the event that your key fob has been thrown around or stepped on however, it can also occur following a repair that requires the removal of the panels and reinstallation. Wires are exposed as panels are removed. If your fob is damaged, you might require replacement completely. Another possibility is that the fob receives interference from other devices or locations. This could cause the RF signals to weaken, preventing the car from acknowledging the remote. You can reset the onboard computer if this is the situation, by disconnecting the 12-volt battery for 15 minutes. This will clear any residual power and allow the system to start again. It is essential to verify the size and quality of the battery prior to replacing it. If the battery you replace is too small or has a different voltage, it could harm the circuit board in the fob's key. Also, you should clean any corrosive materials from the chip in the fob before installing the new battery. The correct type of battery can ensure that the key fob is sealed and protected from moisture. After the key fob has been reinstalled, it should function normally. It is possible to use the second key even the car displays a message that says “key not detected.” It is possible to press the button a few times before it responds.