Citroen C3 Key Fob Troubleshooting
The Citroen c3 keyfob may not function for a variety of reasons. Some of these include worn buttons that are not in contact with the battery, water damage, and receiver module problems. Check the 12 volt batteries.
Deprogramming may be the cause the key fob's not unlocking your car. This happens when certain key sequences send an alert to the onboard computer to erase the key from its access list.
Dead coin battery
If your C3's keys fob is not working the first thing you should check is if the battery is dead. Fobs are small, coin-shaped batteries that can be replaced in just a few minutes. These can be found in general stores, home improvements stores and auto parts stores. Make sure you purchase the correct type, though. The batteries for fobs are usually CR2025 or CR2032, however, you should consult the owner's manual of your vehicle to determine what kind is required.
Before replacing the battery, take off the button pad and rub it with alcohol and cotton swabs. They will remove the corrosion and clean the contacts which typically have a gold color. Once the contacts are cleaned, it is now time to install the new battery. Be careful not to mix the two batteries as they have different voltages, sizes and diameters.
The next step is to test the battery's voltage. A multimeter that is set to the battery's voltage range will provide a precise reading. If the battery shows a value above or below its threshold, it needs to be replaced. Try the car's start using a spare key, but this might not be successful in all instances. If the issue continues, visit an CITROEN dealer with your V5 registration document and personal identifi cation documents. A CITROEN dealer will be able to retrieve the code for your vehicle's immobiliser and get the replacement battery.
Water damage
When the key fob goes submerged, it could lose its signal to the car. It is recommended to remove it as quickly as you can from the puddle or pool. Once you do, dry out the circuit board as much as you can using a cotton swab that has been dipped in isopropyl alcohol, or electronic cleaner. If the key fob still isn't working, it may be time to purchase another one.
Signal interference is a different cause of Citroen remote controls not working. This could happen if there is an electrical signal near the car or other transmitters on the same frequency. Once you have left the interference area your key fob should start working again.
Additionally, the Citroen c3 key fob can stop working due to worn buttons, signal interference, receiver module issues, a dead 12 volt battery, or a defective electronic chip. If this happens, then you'll require it to be replaced by a skilled technician. This can be done by a skilled mechanic or at a Citroen dealership. If the problem is severe then you'll have to get it replaced. It's a fairly simple and affordable fix. But you must take action quickly. The longer you delay fixing the issue, the more difficult it gets. If the issue doesn't get resolved, it can be dangerous for the passengers and yourself.
Issue with the Receiver module
If your key fob isn't working, the receiver module may have developed an issue. Water damage is among the many reasons. This could happen if you drop your keys, or wash them. It is possible to solve the issue by removing and cleaning the chip with isopropyl alcohol, or electronic cleaner. G28CarKeys will keep the chip from getting damaged.
You can also reset the receiver module if you disconnect it from the battery and wait 10 seconds. Then, reconnect the battery to the vehicle and repeat the process. If this doesn't resolve the issue, you can visit a dealership to get it replaced.
Interference can also cause your key to stop working. This can be caused either by other transmitters that operate on the same frequency or objects in your vehicle. If you're unable fix the issue, visit 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 isn't correct the receiver module will not recognize the key and will display the message "Key not detected. This could be a very frustrating issue, especially if you're trying to start your car.
Dead 12 volt battery
It is possible that your key fob may have been damaged if it ceases to function after the change of batteries. This is most likely to happen in the event that your key fob has been thrown or stepped on, but can also be the result of a service that requires the removal of panels and then reinstallation. Wires are exposed when these panels are removed. If your fob was damaged, it might require replacement.
Another possibility is that the remote receives interference from other devices or locations. The RF signals can cause to weaken and block the car from recognizing the remote. You can reset the on-board computer in this situation, by disconnecting the 12-volt battery for 15 minutes. This will erase any remaining electrical charge and allow the system to restart again.
Before replacing the battery it is important to ensure it is the correct size and type. The circuit board that is inside the fob's key can become damaged when the battery you replace is too big or has an incompatible voltage. You should also clean any corrosive materials from the chip inside the fob before installing a new battery. The right battery type can ensure that the key fob is properly sealed and protected from moisture. After the key fob has been put back in place, it should function normally. You should be able to use the second key even when your car displays a message that says "key not found." It could be necessary to press the button a few times before it responds.