Citroen C3 Key Fob Replacement
If the key fob on your C3 stopped functioning suddenly it could be due to a faulty receiver module. If the key fob still works it could be due to other issues, such as water damage or a dead battery.
The eC3 is targeting the mass market, so Citroen has worked to make service simple for customers. It comes with a variety of options, such as remote diagnostics through virtual computers and a dedicated customer support app.
Dead coin battery
If the unlock button on the key fob doesn't work, it could mean that the battery inside the coin is not working properly. Battery life should be between three and four years with regular use. However, it is possible for it to abruptly die. Luckily, car makers have built-in fail-safes to ensure that you can start and lock your car even if your key fob is dead battery.
The battery in the key fob is secured with clips made of metal, which complete a circuit. If G28 Car Keys are worn or dirty, the battery may not be able to receive electricity. The battery also needs to be the right size and type. The battery won't fit in the fob if it is too large or small.
Key fob batteries are often sold under various names, including CR2016 and CR2032 (though they're not interchangeable). The best way to determine which one to buy is to read your owner's manual, or look over the fob for the label that gives you the specific details.
When you've got the proper battery, it can be replaced in a matter minutes. Most fobs have an e-slider, a switch or a gap. These can be used to open the cover open and replace the old battery. Make sure that the new battery has the same voltage as the previous one and that it is inserted correctly.
Water damage
Even the case that your key fob escaped the wash cycle or swimming in the pool, water is not ideal for electronics. It can ruin a battery and cause serious damage to the electronic chip inside. There are, however, some ways to limit the damage.
It's crucial to first eliminate the battery first, and then dry the inside as much as you can. You can also use a cotton swab dipped in 90-percent isopropyl alcohol to clean the battery and the circuit board.
After cleaning the key fob you should let it dry for several days. You can speed this process up by placing it high on a shelf, so it will not be disturbed. Once you are sure that the battery is totally dry, replace it with a new one and use it as normal.
If the key fob does not work, you might have a defective receiver module that's not able to send signals to your vehicle. It's costly to repair, but it's worth it if your goal isn't to replace your car.
The easiest way to fix a damaged key fob is to replace the battery. The radio signal will be restored and your key fob should work again after changing the battery. If the issue continues, you should seek help from a professional.
Faulty receiver module
In certain situations the key fob's receiver module could have a problem that prevents it from receiving and transmitting the proper signal. In this situation the car won't recognize the remote control key. It won't unlock or start. In this case the replacement remote control is required.
Refer to the owner's manual prior to attempting to program the key fob yourself. Check that the battery on the key fob is in good working order and that all buttons are functioning. Close the doors and remove any other devices from the aftermarket, such as alarms or radios from the vehicle.
You might also try cleaning your chip using isopropyl alcohol, or an electronic cleaner. If the chip has become damaged it is likely to be replaced.
After you've cleaned your key fob, take it off its circuit board. Clean the contacts using alcohol swabs and allow them to dry. Once the contacts have dried then you can reassemble and test the key fob. If the key fob still does not work, it might be required to replace the battery. Use a battery that has the same voltage level that the original battery. Double-check the battery's placement, as the contact points are very sensitive.
Keyless entry system that isn't working properly
It can be quite frustrating if the key fob stops working. The good news is that the majority of the time it's easy to get it back in operation. A dead coin battery is the most common reason for a malfunctioning fob. This can be easily replaced in a matter of minutes. Other reasons include signal interference, the receiver module is defective or other electrical issues.
The first step is to ensure that the battery is running at the right voltage and is correctly put in. It is also important to select the right battery type. If you use a battery that is not properly sized or polarized battery could damage the internal circuitry. Examine the fuses for damage or burned.
Another possible problem is that the transponder inside the key may have been damaged or lost. This issue will require further diagnosis by a dealer in the car or professional mechanic.
Many dealerships and auto locksmiths can reprogram a car's key fob at a cost, but this can be expensive. If you have a spare, it might be worthwhile to try reprogramming the fob yourself. In the majority of cases, you will get instructions from your owner's guide. If you don't own the manual, you can locate instructions online or on YouTube. It is important to consult the owner's manual prior to making any repairs on the key fob.