Citroen C3 Key Fob Troubleshooting
The key fob of the Citroen C3 can stop working due to various reasons. These include worn buttons poor contact with the battery, water damage and issues with the receiver module. Check the 12 volt batteries.
If the key fob can not unlock your car, you may be experiencing deprogramming. This happens when certain buttons send an email to the onboard computer asking that the key be removed from its list of keys.
Dead coin battery
If your C3's keys fob no longer works the first thing you should check is if the battery is dead. The batteries in the fobs are tiny, round coins that can be easily replaced within a few moments. You can find these at home improvement stores, and a few auto parts stores. Make sure you purchase the correct one, however. The majority of fobs require CR2025 or CR2032 however, you must check the owner's manual to determine the exact type of battery that your car requires.
Remove the button pad and use cotton swabs and alcohol to clean it. This will remove any corrosion and clean the contacts that typically have a gold color. After the contacts have been cleaned, it is now time to add the new battery. Just be careful not to mix the two kinds because they have different voltages and sizes.
The next step is to examine the battery's voltage. You can get an accurate reading with a multimeter that is set to the battery voltage range. If the battery has a voltage that is higher or lower than its threshold, it will need to be replaced. You can also start your car using a spare key. However, this might not always work. If the problem continues, go to a CITROEN dealership with your V5 registration and identification documents. A CITROEN dealer can find the code of your vehicle's immobiliser and can order the replacement battery.
Water damage
When the key fob gets underwater it may lose its signal to the car. If this happens, it's a great idea to pull it out from the pool, puddle or washing machine as fast as possible. Once you do dry the circuit board as best you can using a cotton swab dipped in isopropyl alcohol or electronic cleaner. If the key fob still does not work, it may be time to get another one.
Another common cause one of the main reasons for Citroen remote control c3 not working is signal interference. This can occur when there is an electrical signal near the vehicle or other transmitters operating on the same frequency. The key fob is expected to begin working again after you have left the zone of interference.
The Citroen C3 key fob can stop working because of worn buttons problems with signal interference, receiver module issues or a dead 12-volt battery or a defective chip. It will need to be reprogrammed in the event of this. This can be done by a qualified mechanic, or a Citroen dealer. If the problem is serious, you may need to replace the device. This is a relatively simple and affordable fix, but it's imperative to act swiftly. The longer you put off fixing the issue, the more serious it becomes. It can be dangerous to passengers and you if the problem is not fixed.
Receiver Module Issue
If your key fob isn't working it could be because the receiver module might have developed a fault. Water damage is one of the numerous reasons. It can happen when you drop 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 corrosion of the chip.
You could also try to reset the receiver module by disconnecting it from the car battery, and waiting for 10 minutes. Then, reconnect the battery and repeat the process. If this doesn't fix the issue, you can go to a dealer to have it replaced.
Interference can also cause your key to stop working. It could be caused by other transmitters using the same frequency, or by objects in your vehicle. If you're not able to fix the issue, visit a dealer to have your key fob reprogrammed.
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 doesn't match the receiver module won't recognize the key and will display a message that says "Key Not Detected. This could be a major 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 stops working after changing batteries. This is particularly true when the key fob is dropped or stepped on, but it also can occur after service on your car that requires the removal and reinstallation of the panels. Wires are exposed when these panels are removed. If your fob has been damaged, it may require replacement completely.
Another possibility is that the remote is receiving interference from other devices or places. G28 could cause RF signals to become weak and prevent the car from recognizing the remote. If this happens it is possible to reset all on-board computers by disconnection of the 12 volt battery for around 15 minutes. This will erase any remaining power, allowing the system to reboot.
It is important to check the size and type of the battery before replacing it. If the replacement battery is too small or has an unsuitable voltage, it can damage the circuit board within the fob's key. Before you install a battery you must clean the chip of the fob to eliminate any contaminants that could cause corrosion. The right battery type can ensure that the key fob is properly sealed and shielded from moisture. After the key fob has been reinstalled it should function normally. In the majority of cases, you can use the second key to start your car, even if it shows the message "key is not detected." You may need to press the button a few times before it responds.