Citroen C3 Key Fob Troubleshooting
Key fobs from Citroen can stop working due to a number of reasons. These include worn buttons, poor battery contact, water damage and issues with the receiver module. You should also examine the battery's 12 volts.
Deprogramming could be the reason the key fob's not unlocking your car. This happens when certain button combinations send an email to the onboard computer requesting that the key be removed from its list of keys.
Dead coin battery
If the key fob on your Citroen C3 is no longer working, check first if the battery has died. The batteries inside the fobs are small, round coins that can be easily replaced within a few moments. These can be found in general stores, home improvements stores, and auto parts stores. Make sure you purchase the correct model, however. Fobs usually require CR2025 or CR2032, but you should refer to the owner's manual of your vehicle to see the exact kind of battery your vehicle requires.
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 have been cleaned then you can put in the new battery. Be careful not to mix up the two batteries as they have different voltages, sizes and diameters.
The next step is to check the battery's voltage. You can get an accurate reading using a multimeter which is set to the battery voltage range. If the battery's current value is either above or below the threshold, then it must be replaced. Try to start your car using an additional key, however it may not work in all situations. If the issue persists, visit a CITROEN dealership with your V5 registration number and personal identity documents. A CITROEN dealer can retrieve the code for your vehicle's immobiliser and request an alternative battery.
Water damage
If the key fob is submerged it could lose its signal. If this happens, it's a good idea to get it out of the pool, puddle or washing machine as soon as possible. Once you've done that make use of a cotton swab, isopropyl or electronic cleaner to clean the circuit board. If the key fob does not work, it may be time to buy a new one.
Another common cause for Citroen c3 remote control not working is signal interference. This could happen if there is an electrical signal near the vehicle or other transmitters that operate on the same frequency. The key fob is expected to begin working again after you have left the area of interference.
Lastly, the Citroen c3 key fob can cease to function due to worn buttons, signal interference, receiver module issues, a dead 12 volt battery, or a malfunctioning electronic chip. If this happens, then you'll require it to be reset by a professional. This can be accomplished by a qualified mechanic or at an Citroen dealership. If the issue is serious, you may need to replace it. This is a relatively simple and affordable fix, but it's essential to act quickly. The longer you put off taking action to fix the issue, the worse it will become. If the issue isn't fixed it could pose a danger for passengers and you.
G28
If your key fob is not working, the receiver module may have developed an issue. This can be caused by a number of things such as water damage. This can happen if you drop your keys or wash them. It is possible to solve the problem by removing your chip and cleaning it with isopropyl, or electronic cleaner. This will keep the chip from becoming corroded.
You can also try to reset the receiver module by disconnecting it from the car battery and then waiting for 10 seconds. Then, reconnect the battery to the car and repeat the process. If this doesn't solve the issue, visit a dealership to have it replaced.
Interference can also cause your key to stop working. It can be caused by other transmitters on the same frequency, or by objects inside your vehicle. If you are unable fix the issue, take your key fob to an authorized dealer and have it 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 isn't in order the receiver module will not recognize the key and will display a key not detected message. This is a problem that can be frustrating especially when you attempt 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 the change of batteries. This is more frequent 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 then reinstallation. Wires are exposed when these panels are removed. If your fob has been damaged, it may require replacement.
Another possibility is that the fob may be receiving interference from other devices or locations. This can cause RF signals to weaken and block the car from acknowledging the remote. If this is the case you can reset the on-board computers by disconnecting the battery with 12 volts for about 15 minutes. This will remove any residual electrical energy, allowing the system to reboot.
Before replacing the battery it is important to ensure it is the correct type and size. The circuit board inside the fob's circuit board could be damaged when the replacement battery is too big or has different voltage. Also, you should clean any corrosive materials off the chip in the fob before installing the 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 reinstalled, it will function normally. You can usually use the second key even when your car displays a message stating "key is not recognized." It may be necessary to press the button a few times before it responds.