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10 Tell-Tale Warning Signs You Need To Find A New Citroen Ds3 Key Fob Replacement
Citroen C3 Key Fob Troubleshooting

The key fob of the Citroen C3 can not function for different reasons. These include worn buttons poor contact with the battery, water damage and receiver module problems. Check the 12 volt battery.

Deprogramming could be the reason the key fob's not unlocking your car. This happens when certain key sequences send an instruction to the onboard computer to remove the key from its access list.

Dead coin battery

If your C3's keys fob isn't working The first thing you need to look for is if the battery is dead. Fobs utilize small coins-shaped batteries that can be replaced in just a few minutes. They are available at the general stores, home improvement stores, and some auto parts stores. Be sure to buy the correct kind. Fobs usually require CR2025 or CR2032 However, you should refer to the owner's manual of your vehicle to determine the kind of battery your vehicle requires.

Before you replace the battery, take off the button pad and rub it with cotton swabs and alcohol. They will remove the corrosion and clean the contacts which are usually colored gold. After cleaning the contacts then you can put in the new battery. Be careful not to mix the two batteries because they differ in their voltages and diameters.

Next, you will need to test the voltage of the battery. A multimeter set to the battery's voltage range will provide you with a precise reading. If the battery is at the value that is either above or below its threshold, it will need to be replaced. You can also try starting your car with a spare key, however this may not work in all cases. If the problem continues, visit a CITROEN dealership with your V5 registration as well as personal identity documents. G28CarKeys can locate the code for your vehicle's immobiliser and order a replacement battery.

Water damage

When the key fob goes underwater it may lose its signal to the car. If this happens, it's a great idea to get it out of the puddle, pool, or washing machine as soon as you can. Once you've done that using a cotton swab and isopropyl or electronic cleaner to clean the circuit board. If the circuit board is still not working it could be time for a new key fob.

Signal interference is another frequent reason for Citroen remote controls not working. It can happen when there is an intense electrical field in the vicinity of the car or from other transmitters on the same frequency. The key fob should start working again after you are out of the area of interference.

The Citroen C3 key fob may not function due to worn buttons or signal interference, receiver module issues or a dead 12 volt battery, or a damaged electronic chip. You'll need to have it changed to a new program when this happens. This can be done by a certified mechanic or at an Citroen dealership. If the problem is severe, you'll need to have it replaced. It's a simple and affordable fix. But you have to take action quickly. The longer you delay to resolve the issue, the worse it will become. If the issue isn't resolved it could pose a danger for the passengers and yourself.

Receiver Module Issue

If your key fob ceases functioning, it could be due to the receiver module having developed an issue. Water damage is among the many causes. This could happen if you accidentally drop your keys or wash them. It is possible to repair the issue by removing the chip and cleaning it with isopropyl and electronic cleaner. This will prevent the chip from corrosion.


You can reset the receiver module if you disconnect it from the battery for 10 seconds. Then, reconnect the battery to the car and repeat the procedure. If this isn't enough to fix the issue, you can take it to a dealership to have it replaced.

Interference can also cause your key to stop working. It can be caused by other transmitters using the same frequency or by objects inside your vehicle. If you're unable to fix the issue, bring your key fob to an authorized dealer and have it replaced.

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 in order the receiver module won't recognize the key and will display an error message that states the key is not detected. This could be a frustrating issue, especially if you're trying to start your vehicle.

Dead 12 volt battery

If your key fob ceases working after an upgrade to a battery it could be damaged. This is most likely to happen when your key fob has been thrown around or stepped on However, it can be the result of a service that requires the removal of panels and then reinstallation. When the panels are removed, wires are exposed. If your fob was damaged, it might require replacement.

Another possibility is that the fob receives interference from other devices or places. This can cause RF signals to become weaker and prevent the car from recognizing the remote. It is possible to reset the onboard computer if this is the situation by disconnecting the 12-volt battery for 15 minutes. This will erase any remaining electricity and allow the system to restart over.

It is crucial to determine the size and type of the battery prior to replacing it. If the battery you replace is too small or has an unsuitable voltage, it could harm the circuit board within the key fob. Before installing a battery, you should clean the chip inside the fob to get rid of any harmful substances. Using the right type of battery will ensure that it is sealed and protected from moisture. Once the key fob is replaced, it should work normally. In the majority of cases, you can use the second key to start your vehicle even if it shows a message saying "key is not detected." It may be necessary to press the button several times before it responds.