citroen keys C3 Key Fob Troubleshooting
citroen relay key fob c3 key fob can stop working for many reasons. This includes worn buttons, poor contact with the battery, water damage and receiver module problems. Examine the 12 volt batteries.
If the key fob does not unlock your car, you could be experiencing deprogramming. This happens when certain buttons send an electronic message to the computer requesting that the key be removed from its list of keys.
Dead coin battery
If the fob that you use to open the door on your Citroen C3 is no longer functioning, first check if the battery is dead. The batteries in the fobs are tiny, round coins that can be replaced in just a few minutes. You can find these at general stores, home improvement stores, and some auto parts stores. Be sure to purchase the right type. Fobs typically require CR2025 or CR2032 however, you must consult your owner's manual to determine the exact type of battery your vehicle requires.
(Image: https://www.thekeylab.co.uk/wp-content/uploads/2022/06/KeyLab-1-e1658690716312-300x146.png)Before replacing 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 gold-colored. Once the contacts are cleaned and sanitized, you can then insert the new battery. Just be careful not to mix the two kinds because they have different voltages and sizes.
The next step is to determine the voltage of the battery. A multimeter calibrated to the battery's voltage range will provide a precise reading. If the battery shows the value that is either above or below its threshold, it needs to be replaced. You could also try the car's start using an additional key, however this may not work in all situations. If the issue continues, visit a citroen c3 key fob replacement dealership with your V5 registration and personal identity documents. A citroen Key Repair Dealer can retrieve the code of your vehicle's immobiliser and order an upgrade to your battery.
Water damage
If the key fob is submerged it could lose its signal. If this happens, it's a good idea to remove it from the pool, puddle or washing machine as fast as you can. After this, use an swab of cotton and isopropyl or electronic cleaner to clean the circuit board. If it doesn't work, it may be time for a new key fob.
Signal interference is a common reason for Citroen remote control not working. This may occur when there is an intense electrical field close to the car, or from other transmitters on the same frequency. The key fob will begin working again after you have left the zone of interference.
(Image: https://www.thekeylab.co.uk/wp-content/uploads/2022/07/cropped-KeyLab-1-152x69.png)The citroen new key C3 key fob can be inoperable due to worn buttons problems with signal interference, receiver module issues or a dead battery or a damaged chip. If this happens, you'll likely require it to be replaced by a skilled technician. This can be accomplished by a trained mechanic or an citroen ds3 key replacement dealer. If the problem is serious it is possible to replace the device. It's an easy and affordable fix. But you have to be quick to act. If you put off fixing the issue, the worse it becomes. It can be dangerous to passengers and yourself if the problem is not addressed.
Receiver module issue
If your key fob isn't working, the receiver module may have developed an issue. Water damage is one of the many causes. This can happen if you lose your keys, or wash them. You can try to fix the problem by removing and cleaning the chip using isopropyl alcohol, or electronic cleaner. This will avoid the chip from becoming damaged.
You can also try to reset the receiver module by disconnecting it from the car battery, and waiting for 10 minutes. Then reconnect the battery to the car and repeat the process. If this does not fix the issue, take it to a dealer for replacement.
Another reason your key may not work is due to interference. It can be caused by other transmitters on the same frequency or by objects in your vehicle. If you're unable to fix the issue, go to a dealership 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 isn't right 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 vehicle.
Dead 12 volt battery
If your key fob ceases working after changing the battery, it may be damaged. This is especially true in the event that the key fob was dropped or stepped on, however it also can occur after servicing on your car that requires removal and reinstallation of the panels. When these panels are removed, the wires are exposed. If your fob has been damaged, it might need to be replaced entirely.
A remote that receives interference from other devices and locations is also a possibility. The RF signals can cause to weaken, preventing the car from being able to recognize the remote. If this is the case you can reset all computer systems on board by disconnecting the battery with 12 volts for about 15 minutes. This will eliminate any remaining power and allow the system to restart again.
Before replacing the battery it is important to ensure it is the correct size and type. If the battery you replace is too small or has different voltage, it could damage the circuit board within the fob's key. Before you install a battery you should clean the chip inside the fob to get rid of any corrosive substances. The right battery type can ensure that the key fob is sealed and protected from moisture. Once the key fob is replaced, it should work normally. You should be able to use the second key when your car displays a message that says “key is not recognized.” It may be necessary to press the button a few times before it responds.