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Citroen C3 Key Fob TroubleshootingCitroen c3 key fobs can stop working for a variety of reasons. The most common reasons are worn buttons and poor contact with the battery, water damage, and receiver module problems. Make sure the batteries are 12 volts.If your key fob does not unlock your car, it could be experiencing deprogramming. This occurs when certain buttons send an email to the onboard computer asking that the key be removed from its list of keys.Dead coin batteryIf the fob that you use to open the door on your Citroen C3 is no longer working, first make sure the battery has failed. Fobs have small coin-shaped batteries which can be replaced in just a few minutes. You can find these in general stores, home improvement stores, and even auto parts stores. Make sure you buy the correct one, however. Batteries for fobs are typically CR2025 or CR2032 However you should check the owner’s manual for your vehicle to determine which type is required.Take off the button pad and use cotton swabs and alcohol to clean it. This will help remove corrosion and clean the contacts, which are usually colored gold. After the contacts have been cleaned, you can then add the new battery. Be careful not to mix the two types because they have different voltages and sizes.The next step is to examine the battery’s voltage. A multimeter set to the battery’s voltage range will give you an accurate reading. If the battery has the value that is either above or below its threshold, it is required to be replaced. You may also try getting your car started using a spare key, but it may not work in all cases. If the issue continues then visit 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 order an alternative battery.Water damageWhen the key fob gets underwater, it may lose its signal to the car. It’s best to remove it as quickly as possible from the puddle or pool. Once you have done that dry the circuit board as well as you can with a cotton swab dipped in isopropyl alcohol or an electronic cleaner. If the key fob still doesn’t function, it might be time to invest in an additional one.Another reason that is commonly cited for Citroen c3 remote control not working is signal interference. This can occur when there is an intense electrical field close to the vehicle, or from other transmitters operating on the same frequency. Once you have left the interference area your key fob will begin working again.The Citroen C3 key fob can stop working because of worn buttons problems with signal interference, receiver module problems as well as a dead 12-volt battery, or a defective chip. It will need to be reset in the event of this. This can be done by a trained mechanic or at an Citroen dealership. If the issue is severe, you’ll need to have it replaced. It’s a simple and inexpensive fix, but it’s crucial to act fast. The longer you wait to address the issue, the more severe it will be. It could pose a risk to passengers and you in the event that the issue isn’t resolved.Issue with the Receiver moduleIf your key fob isn’t working, the receiver module may have developed a fault. Water damage is one of the numerous causes. This can happen when you lose your keys or wash them. It is possible to fix the problem by removing and cleaning the chip with isopropyl alcohol or electronic cleaner. This will help to prevent corrosion of the chip.You can also reset the receiver module if you disconnect it from the battery and then wait 10 seconds. Then reconnect the battery to the car and repeat the procedure. If this isn’t enough to fix the problem, you can bring it to a dealer to be replaced.Interference can also cause your key to stop working. This can be caused either by other transmitters operating on the same frequency or objects in your vehicle. If you’re unable to fix the issue, you can take your key fob in to a dealer and have it 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 correct the receiver won’t recognize the car key and display a message saying “key not detected”. This is a problem that can be frustrating especially when you attempt to start your car.Dead 12 volt batteryIt is possible that your key fob has been damaged if it stops working after the change of batteries. This is most likely to happen in the event that your key fob has been dropped or stepped upon, but can also occur following a repair that requires the removal of panels and reinstallation. When the panels are removed, wires are exposed. If your fob was damaged, it may require replacement completely.A fob that is receiving interference from other devices and locations is another possibility. This could make RF signals weaker and hinder the car from recognizing the remote. You can reset the onboard computer in this situation. You can do this by disconnecting the 12-volt battery for 15 minutes. This will eliminate any remaining electrical charge and allow the system to start over.Before replacing www.thekeylab.co.uk , it’s important to make sure it’s the correct size and type. The circuit board that is inside the key fob can be damaged when the replacement battery is too large or has an incompatible voltage. Also, you should clean any corrosive materials off the chip in the fob before installing a new battery. The correct battery type will ensure that the key fob is sealed and shielded from moisture. After the key fob has been installed, it will function normal. In the majority of instances, you can use the second key to start your car even if it shows a message of “key is not detected.” It may be necessary to press the button multiple times before it responds.