Citroen C4 Key Fob Replacement
The Citroen C4 Picasso is a compact SUV that is small enough for a family, and has several truly innovative features. It's large enough for five people, and is a great vehicle to travel around the city.
Sometimes, citroen keys can cease to function due to pairing problems. This issue can be fixed if instructions are followed. However, a professional equipped with the right equipment is required to fix certain types of vehicles.
Dead coin battery
A dead battery is the most frequent problem affecting remote key fobs. It is a simple fix, however. You'll only need to replace the battery with a coin size. These batteries are available at your local auto retailer and look similar to small silver coins. After you replace the battery, your vehicle should be able to unlock and lock.
Interference is another reason your key fob won't work. This can be caused by various factors, including weather conditions, objects, or other transmitters on the same frequency. If this occurs, it may be necessary for you to remove the ignition key and try again.
Deprogramming your key fob could also be the cause for the key's inability to function. This can happen in the event that the key was exposed to water, or the battery was not removed properly after replacing the key. You can usually restore the programming by following the steps in the owner's manual. If you're not able to resolve the issue, you can contact an expert locksmith or dealer to do it for you.
Water damage
Citroen C4 has a high level of reliability, however it is still a complex machine with hundreds interconnected parts. As with all cars it could suffer periodic breakdowns from time to time. In some cases, the issue can be easily fixed. In some cases you may have to contact assistance or visit an expert. The most frequent reasons the C4's key fob stops working are dead coin battery, water damage, signal interference and receiver module issues.
Water damage can be caused by sweat or moisture on the key fob's circuit board. The circuit can be damaged and result in an unresponsive keyfob or battery drain. Keep your key fob away from the water and in a plastic bag.
A multimeter can be used to check the battery's voltage. A successful test will give values that range from 12 to 13 If your battery fails to produce these numbers, then it may be defective. This means you'll have to replace the battery.
Receiver module that is defective
A faulty receiver can cause the keyfob to cease working. This is a common problem for Citroen owners, as the key fob has to transmit a signal through the door handle to unlock and start the car. The key fob won't work if it does not transmit the signal. It needs to be replaced. This is usually done by a mechanic or a dealership.
There are many different issues that could happen with your Citroen C4 key fob. This can be a dead coin-cell battery, damage to the signal or water. The first step in troubleshooting is to test the key fob's batteries and to check for obvious indications of damage. This can be done by opening the keyfob and removing its battery to have a better look.
If you discover a depleted battery, replace it with a new one. Make sure that the new battery is of the same size, voltage, and specification. Make sure you snap the fob together before replacing it.
Poor 12 volt battery
Many newer cars have key fobs that let you to lock or unlock the vehicle remotely. These devices send a signal the car to control the locks and work on battery power. However, the batteries could fail over time. The good part is that the replacement battery is affordable and easy to replace. You can pry the fob out by using a flat-bladed screwdriver. you can find the instructions in your owner's handbook.
Replace the battery with one of the same type and size as the original. Different batteries can have different voltages that could cause your fob to stop working or display a low-battery warning. Remember to also orient the battery in such that the plus and negative symbols are in line with the initial orientation. This will ensure that the chip is receiving the proper signals. The problem could also be caused by a faulty module. In this case you should consult your dealer to get further diagnostics and repairs.
Unpaired key that requires reprogramming

Car key remotes might fail to function for a variety of reasons. Most of these problems are easily and quickly repaired. The most frequent cause is a dead coin battery which can be replaced in just a few minutes at the majority of auto parts stores. But, it's crucial to ensure that the new battery is properly installed. Metal retaining clips should be tightened correctly and the battery contacts should be clean.
Another possibility is a malfunctioning receiver module or signal interference. If the key fob doesn't receive a clear signal from the receiver, it may not be able unlock or lock the doors as well as start the vehicle or operate the hands-free system. In these situations, you should try to reset the receiver by disconnection of the battery for a couple of minutes.
Smart keys are more expensive and cost up to $500 to replace. They have an electronic security device that disables the immobiliser of your vehicle. It is best to have two keys working for your C4 in order to avoid the cost of these keys. This key fob for replacement is updated with brand new internal parts and tested before delivering to you.