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Citroen C4 Key Fob Replacement The Citroen C4 Picasso, a compact SUV that is small for a family that is truly innovative, comes with some great features. It's large enough for five people and is a great vehicle to get around the city. Sometimes, a key fob stops working due to pairing issues. This issue can be resolved if instructions are followed properly. For certain vehicles, a technician will be required with special tools. Dead coin battery The most common problem with remote key fobs is a dead battery. It is a simple fix however. You only need to replace the battery that is coin-sized. They look like tiny silver coins and can be purchased at your local auto shop. Once you've replaced the battery, you will be in a position to lock and unlock your vehicle. Another reason why your key fob won't work is due to interference. It could be caused by various factors, including objects weather conditions or other transmitters using the same frequency. If this happens, it could be necessary to take the key from the ignition and try again. Another reason why your key fob may not function may be that it has been deprogrammed. This could happen if the key is exposed to water or it isn't removed correctly after replacing the battery. Usually, you can restore the program of your car by following the steps in the owner's manual. If you're not able to get it done, you can go to an expert locksmith or dealer to do it for you. citroen key fob programming has a high level of reliability, but it is still a complex machine with hundreds of interconnected parts. Like every car it can experience a breakdown from time to time. In some cases, the problem is easily solved. In other cases, you may need to call for assistance or visit an expert. The most frequent reasons for the C4 key fob not functioning are an unresponsive coin battery, water damages, signal interference and receiver module malfunctions. Water damage can result from sweat or moisture on the key fob's circuit board. The circuit could be prone to become shorted, which can lead to the battery draining or even dead key fob. Keep your key fob away from the water and put it in a plastic bag. A multimeter can be used to check the voltage of your battery. A successful test will show values ranging from 12 to 13. If your battery isn't producing these values, it could be defective. This means you'll have to change the battery. The receiver module is not working properly. A malfunctioning receiver can cause the keyfob to cease to function. Citroen owners are often faced with this issue because the key fob must send an indication to the door handle to unlock and start the car. If the key fob fails to transmit this signal, it won't function and should be replaced. This can be done at a vehicle dealership or by an experienced mechanic. There are many different things that can go wrong with your Citroen C4 key fob. This could be due to an empty coin-cell battery, signal interference or water damage. To begin troubleshooting, check the batteries of the key fob, and look for obvious signs. This can be done by opening the key fob and then removing the battery to gain a better view. Replace the battery if drained. Make sure that the new battery is of the same voltage, size and specifications. Also, make sure that the fob is securely joined before replacing it. Problematic 12 Volt Battery Many newer cars have key fobs that allow you to lock or unlock your vehicle remotely. These devices transmit signals to the vehicle to control the locks. They are powered by batteries. However, batteries can fail over time. The good part is that the replacement battery is inexpensive and simple to replace. You can use a screwdriver with a flat blade to break the fob or your owner's manual might have instructions on how to do it. When replacing the battery, make sure you're using a battery of the same type and size as the original. Different batteries can differ in voltage, which can cause your device to stop working or display a low-battery warning. Be sure to position the battery in that the positive and negative numbers correspond to the initial orientation. This ensures that the chip is receiving correct signals. Alternatively, the problem may result from a malfunctioning receiver module. In this situation, it is recommended that you contact the dealer for further assistance and repairs. Unpaired keys that require reconfiguring Car key remotes can cease to function due to various reasons. The majority of these issues can be easily and quickly repaired. Most of the time, a dead coin-cell battery is the reason. This can be easily replaced in a matter of seconds at most auto parts shops. However, it's important to ensure that the new battery is properly installed. Metal retaining clips must be tightened in a proper manner and the battery contacts should be clean. Another possibility is a faulty receiver module or signal interference. If the key fob is unable to receive a clear signal from the receiver, it may not be able unlock or lock the doors and start the vehicle, or operate the hands free system. In these situations you can try to reset the receiver by disconnection of the battery for a few minutes. Smart keys are more expensive and could cost as much as $500 to replace. They contain a security chip that disables the standard immobiliser of your car. It is recommended to have two keys that work for your C4 in order to avoid the high cost. This replacement remote key fob has been repaired and tested using new internal components before it is sent to you.