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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 big enough to accommodate five people and is a great option to get around town. Sometimes, a keyfob can cease to function due to pairing problems. This problem may be easily fixed if the instructions are followed. For certain vehicles, a professional may be required to use specialized tools. Dead coin battery A dead battery is the most common issue with remote key fobs. However, it's a simple solution. All you need to do is replace the battery on your coin. These batteries are available at your local auto store and resemble small silver coins. Once you've replaced the battery, you should be able to lock and unlock your car. Another reason why your key fob isn't working is due to interference. This could be due to various factors, including weather conditions, objects or other transmitters operating on the same frequency. If this occurs, it may be necessary to take out the ignition key and try again. Deprogramming your key fob could also be the cause for the failure of the key to function. This could happen if the key is exposed to water or if it isn't removed correctly after replacing the battery. Usually, you can fix the programming of your car by following the guidelines provided in the owner's guide. If you're unable to do this, consult a professional locksmith dealer to help you. Water damage Citroen C4 has a high level of reliability, but it's still a complicated machine with hundreds of interconnected components. It's not uncommon for a C4 from Citroen to experience a malfunction. In some instances the issue can be easily solved. In other cases, you may need to contact a professional for assistance or see an expert. The most common reasons for why the C4's key fob stop working include a dead coin battery signal interference, water damage and receiver module problems. Water damage can result from sweat or moisture on the circuit board. This could cause a short circuit in the circuit and result in a dead keyfob or battery drain. Keep your key fob away from the water and in a plastic bag. You can also test the battery's voltage using an instrument. A successful test will reveal values ranging from 12 to 13. If your battery does not produce these numbers, then it may be defective. This means that you'll need to change the battery. A malfunctioning receiver module A malfunctioning receiver module could cause the key fob to stop working. This is a typical issue for Citroen owners, as the key fob is required to send a signal through the door handle to unlock and begin the car. The key fob won't work if it doesn't send the signal. It must be replaced. This is usually done by a mechanic or a dealership. Citroen C4 keys can malfunction for a variety of reasons. This can be a dead coin-cell battery or damage to the signal or water. To begin troubleshooting the issue, test the batteries on the key fob and look for obvious signs. This can be done by taking the keyfob apart and removing its battery for a more thorough view. Replace the battery if it has drained. Make sure that the new battery is of the same voltage, size, and specification. Also, make sure that the fob is securely snapped together before replacing it. citroen car key repair is defective at 12 volts. Many modern vehicles come with key fobs which allow you to lock or unlock the vehicle remotely. These devices transmit an electronic signal to the vehicle to control the locks. They are powered by batteries. Batteries can degrade over time. The good news is that a replacement battery is affordable and easy to replace. You can use a flat-blade screwdriver to pry the fob open or your owner's guide may have instructions on how to do it. Replace the battery with one of the same type and size as the original. Different types of batteries have different voltages, which can cause the fob's function to cease or display a low battery alert. Remember to also orient the battery in such a way that the plus and negative numbers are aligned with the original orientation. This will ensure that the chip receives the proper signals. In other cases, the issue could be caused by a defective receiver module. In this case you should consult your dealer for further diagnostics and repairs. Unpaired key requiring reprogramming Car key remotes may cease to function due to many reasons. Fortunately, most of these issues can be resolved quickly and easily. Most of the time the problem is caused by a defective battery in the coin-cell. is the cause. This can be easily replaced in a couple of moments at most auto parts shops. However, it's important to ensure that the new battery is correctly installed. Metal retaining clips need to be properly tightened and contacts of the battery should be cleaned. Another possibility is that of a damaged receiver module or signal interference. If the key fob is not receiving a sufficient signal from the receiver, it might not be able to lock or unlock doors or start the car, or operate the hands-free feature. In these cases you can reset the receiver by dismantling the battery for several minutes. Smart keys are more expensive and can cost as much as $500 to replace. They have an electronic security device that disables the immobiliser of your vehicle. To avoid these costly costs it's recommended to have at minimum two keys that work for your C4. This key fob for replacement is cleaned and refurbished with new internal components and tested before being shipped to you.