13 Things You Should Know About Citroen Ds3 Key Fob Replacement That You Might Not Have Known

13 Things You Should Know About Citroen Ds3 Key Fob Replacement That You Might Not Have Known

Citroen C3 Key Fob Troubleshooting

Key fobs from Citroen can stop working due to a variety of causes. They can be due to worn buttons, poor contact between the battery and the water and issues with the receiver module. You should also examine the 12 volt battery.

Deprogramming is a possible cause of your key fob not unlocking your car. This happens when certain buttons send an email to the onboard computer requesting that the key be removed from its list of keys.

Dead coin battery

If your C3's keys fob isn't working the first thing to determine is if the battery is dead. The batteries inside the fobs are tiny, round coins that can be changed in a matter of seconds. They are available in general stores, home improvements stores and auto parts stores. Be sure to purchase the correct model. Fobs typically require CR2025 or CR2032 However, it is recommended to check the owner's manual to determine the type of battery that your car requires.

Before replacing the battery, take off the button pad and rub it using cotton swabs and alcohol. They will remove the corrosion and clean the contacts, which are usually colored gold. Once the contacts have been cleaned then you can put in the new battery. Just be careful not to mix the two types as they differ in their voltages and diameters.

Next, you will need to determine the voltage of the battery. You can get an accurate reading using a multimeter, which is set to the battery's voltage range. If  G28CarKeys  is either above or below the threshold, then it must be replaced. Try the car's start using a spare key, but this might not be successful in all instances. If the issue persists, go to an CITROEN dealership with your V5 registration number and personal identification documents. A CITROEN dealer can obtain the code for your vehicle's immobiliser system, and get the replacement battery.

Water damage

If the key fob is submerged, it could lose its signal. It is recommended to remove it as soon as you can out of the pool or puddle. Once you have done that, dry out the circuit board as much as you can with the help of a cotton swab, dipped into isopropyl ethanol or electronic cleaner. If the key fob doesn't function, it might be time to get an additional one.

Another common cause one of the main reasons for Citroen c3 remote control not working is signal interference. This can occur when there is an intense electrical field near the car or from other transmitters on the same frequency. Once you have left the area of interference your key fob will begin working again.

The Citroen C3 key fob might be inoperable due to worn buttons or signal interference issues, receiver module problems, a dead 12-volt battery or a damaged chip. If this happens, you'll probably require it to be changed by a certified expert. This can be accomplished by a trained mechanic or an Citroen dealer. If the issue is serious then you'll have to get it replaced. This is a relatively simple and inexpensive fix, but it's imperative to act swiftly. The longer you delay fixing the problem, the worse it gets. If the problem isn't addressed, it can be dangerous for passengers and you.

Issue with the Receiver module

If your key fob is not functioning it could be because the receiver module might have developed a fault. It could be caused by many things like water damage. It can happen when you lose your keys or wash them. You can try to fix the issue by taking off and cleaning the chip with isopropyl alcohol or electronic cleaner. This will prevent the chip from corrosion.

You can reset the receiver module if you disconnect it from the battery and wait 10 seconds. Then reconnect the battery to the car and repeat the procedure. If this fails to fix the issue, you can go to a dealer to have it replaced.

Interference can also cause your key to stop working. This could be caused by other transmitters on the same frequency, or by objects inside your vehicle. If you are unable to resolve the problem, you can 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 isn't accurate the receiver will not recognize the car key and display a message saying "key not recognized". This could be a major issue especially when you attempt to start your vehicle.

Dead 12 volt battery

It is possible that your key fob may have been damaged if it ceases to function after changing batteries. This is more frequent in the event that your key fob has been thrown or stepped on however, it can also occur following a repair that requires the removal of panels and the reinstallation. When the panels are removed, wires are exposed. If your fob has been damaged, it might require replacement completely.

A remote that is receiving interference from other devices and locations is also a possibility. This could cause the RF signals to weaken, preventing the car from recognizing the remote. You can reset the onboard computer if this is the situation, by disconnecting the 12-volt battery for 15 minutes. This will clear any residual electricity and allow the system to begin from scratch.


It is essential to confirm the size and quality of the battery prior to replacing it. The circuit board on the key fob can be damaged when the replacement battery is too big or has an incompatible voltage. You should also clean any corrosive materials off the chip in the fob prior to installing a new battery. Making sure you choose the right battery will ensure that it is sealed and protected from moisture. Once the key fob's been reinstalled, it will function normally. You should be able to use the second key when your car displays a message saying "key not detected." It could be necessary to press the button a few times before it responds.