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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 has decent space for five people, and is an excellent way to get around the city. Sometimes the key fob ceases working due to pairing issues. This problem may be easily fixed if the instructions are followed correctly. However, a professional with the right equipment is required for specific models of vehicles. Dead coin battery A dead battery is the most frequent issue with remote key fobs. However, it's a simple solution. All you need to do is replace the battery in the coin. The batteries look like small silver coins, and can be found at your local auto shop. When you replace the battery, your vehicle should be able to unlock and lock. Another reason why your key fob won't work is due to interference. This can occur due to many reasons, including weather conditions, objects or other transmitters operating on the same frequency. If this happens, then it could be necessary to remove the key from the ignition and try again. The key fob's deprogramming could be the reason for its inability to function. This can occur when the key is exposed to water or the battery isn't removed properly after the key is replaced. Usually, you can re-set the car's programming by following the instructions provided in the owner's manual. If you are unable to do it do it, you can ask an expert locksmith or dealer to do it for you. citroen key programming is a highly reliable vehicle, but it's an auto with hundreds of interconnected components. Like all cars it could encounter an issue from time to occasion. In some instances it is easy to get the issue repaired. In some instances, you may need to call for help or see an expert. The most frequent reasons for the C4 key fob not functioning are a dead coin battery water damages, signal interference and receiver module issues. Water damage can be caused by sweat or moisture on the key fob's circuit board. This can cause the circuit to short, resulting in the battery draining or a dead key fob. Keep your key fob out of the water and put it in a plastic bag. A multimeter can be used to check the battery's voltage. A successful test will show values that range from 12 to 13. If your battery fails to produce these values, then it could be defective. This means that you'll need to change the battery. A malfunctioning receiver module A defective receiver can cause the key fob to cease working. Citroen owners often experience this issue because the key fob must send a signal to the door handle to unlock the vehicle and start it. The key fob won't function if it is unable to send the signal. It has to be replaced. This can be performed at a car dealership or by an expert mechanic. There are many different possibilities for problems with your Citroen C4 key fob. These include a dead coin battery, signal interference, water damage, or a defective electronic chip. The first step to troubleshoot is to test the battery of the key fob and to check for obvious signs of damage. You can do this by opening the key fob then taking out the battery for a better view. Replace the battery if drained. Make sure the new one has the same voltage, size, and specification. Make sure you connect the fob prior to replacing it. Problematic 12 Volt Battery A lot of newer vehicles have key fobs that let you to lock or unlock the vehicle remotely. These devices send signals to the car to control the locks. They work on battery power. Batteries are susceptible to failure over time. The good part is that the replacement battery isn't expensive and easy to replace. You can use a screwdriver with a flat blade to pry the fob open, or your owner's manual may have instructions on how to do it. Replace the battery by using a different one of the same type and size as the original. Different kinds of batteries have different voltages, which can cause the fob to stop functioning or display a low battery warning. Remember to also orient the battery in such a way that the plus and negative numbers correspond to the initial orientation. This will ensure that the chip receives the correct signals. In other cases, the issue could result from a malfunctioning receiver module. In this case it is recommended to contact the dealer for further assistance and repairs. Unpaired keys that require the reprogramming Car key remotes can cease to function due to a variety of reasons. Fortunately, the majority of these problems are fixable quickly and easily. Most often it is a dead battery that is the reason. This can be easily replaced in a matter of minutes at most auto part shops. However, it's important to make sure that the new battery is properly installed. Metal retaining clips should be properly tightened and the contacts of the battery must be cleaned. Another possibility is that of a damaged receiver module or signal interference. If the key fob isn't receiving a strong enough signal from the receiver, it may not lock or unlock doors as well as start the car or operate the hands-free feature. In such cases you can reset the receiver by disconnection of the battery for a short period of time. Smart keys, that have an integrated security chip that disarms the vehicle's standard immobiliser system, are more expensive than traditional keys made of metal and can cost upwards of $500 to replace. To avoid the high cost it's a good idea to have at minimum two keys working for your C4. The replacement remote key fob has been rebuilt and tested with brand new internal components before being sent to you.