Citroen C3 Key Fob Replacement
If the key fob on your C3 stopped completely it could be due to a malfunctioning receiver module. If the key fob is still functional, the issue may be caused by something else, like water damage or a dead coin battery.
Citroen intends to cater to the masses with its eC3. It comes with a variety of options, like remote diagnostics that can be performed remotely and a dedicated customer support app.
Dead coin battery
If the unlock button on the key fob isn't working, or if the unlock button does not work, it may be that the coin battery is not working properly. The battery is expected to last between three and four years if used regularly however, it could die in a sudden manner. Luckily, car makers have built-in fail-safes that ensure you can still start and lock your vehicle even if your key fob is dead battery.
The battery inside the key fob is secured by clips made of metal that form an electrical circuit. The battery might not be powered if these clips are worn or dirty. The battery should also be of the correct size and type. The battery won't fit in the fob if it's too large or small.
Key fob batteries are sold under various names like CR2016 or CR2032. These batteries are not interchangeable. Consult your owner's guide or look for a sticker on the fob that contains the details.
If you've found the right battery you can replace it in a matter of seconds. Most fobs feature a slider, gap, or switch that you can use to pop open the cover and swap out the old one for an alternative. Make sure that the new battery is the same size and voltage, and is inserted in the correct position.
Water damage
Even the case that your key fob escaped the wash cycle or a dip in the pool, water is not ideal for electronics. It can damage a battery and cause serious damage to the electronic chip inside. There are, however, some options to limit the damage.
It is essential to first get rid of the battery and then dry the inside as much as you can. You can also employ a cotton swab coated in 90 percent isopropyl ethanol to clean the battery and circuit board.
After you have cleaned the key fob, you must let it dry for a few days. You can speed up the process by placing it on a high shelf that won't be disturbed. After you've confirmed that it's dry, try replacing the battery and operating it as usual.
If the key fob isn't working, it could have a malfunctioning receiver module that cannot transmit signals to your vehicle. It can be expensive to fix, but it's worth it if you don't wish to replace your vehicle.
The most straightforward method to fix a malfunctioning key fob, is to replace the battery. The battery change will bring back the radio signal and make the key fob work once more. If the issue persists, you should seek professional assistance.
A malfunctioning receiver module
In some instances the key fob's receiver module may have a defect that is preventing it from receiving or transmitting the correct signal. If this is the case, your car won't recognize your remote control key, and will not be able to unlock or start the engine. In this scenario you'll need an alternative.
Check out the owner's guide prior to attempting to reprogram the key fob on your own. Make sure that the battery of the key fob is in good shape and that all buttons work. Close citroen berlingo key fob and take out any devices that are not from the market, like alarms or radios from your vehicle.
You might also try cleaning your chip using isopropyl alcohol or electronic cleaner. If the chip is fried it will likely need to be replaced.
After cleaning the key fob, take it off the circuit board. Clean the contacts with alcohol swabs and allow them to dry. After the contacts are dry you can reassemble them and test the key fob. If it still doesn't work, you may need to replace the battery. Use a battery that has the same voltage as the battery you replaced. Make sure to check the battery's position, since the contact points are very sensitive.
Faulty keyless entry system
It can be a hassle if the key fob stops functioning. The good news is that the majority of the time it's simple to get it back up and running. A dead battery in the coin slot is the most frequent reason for a broken fob. It can be replaced within minutes. Other causes include signal interference, the receiver module is defective or other electrical issues.
The first step is to ensure that the battery is properly installed and has the correct voltage. It is also crucial to select the correct battery type. Using an incorrectly sized or polarized battery can damage the internal circuitry. You can also check the fuses to ensure they are not blown or have not melted.
A transponder that is inside the key could be damaged or gone. This will require a further investigation by a qualified mechanic or dealer in cars.
Auto locksmiths and dealers will reprogram the fob of the key in vehicles for a small fee. However, this can be costly. It could be worthwhile to reprogram your spare fob, if you have one. You will usually find the instructions in the owner's manual. If you don't have the manual, you can search for instructions online or on YouTube. Before attempting to repair the key fob, it's important that you consult the owner's manual.