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Citroen C4 Key Fob Replacement The Citroen C4 Picasso, a compact SUV for small families It has some really innovative features. It's big enough to accommodate five people and is an excellent way to travel around the city. Sometimes, a keyfob will cease to function due to pairing issues. If you follow the steps correctly, the issue can be fixed quickly. However, a professional with the right equipment is required for specific makes of vehicles. Dead coin battery The most frequent issue with remote key fobs is a dead battery. It is a simple fix, however. You just need to replace the battery in the shape of a coin. They look like tiny silver coins and can be purchased in your local automotive shop. After replacing the battery, your vehicle should be able unlock and lock. Another reason why your key fob may not function is due to interference. This could be due to many reasons, including weather conditions, objects, or other transmitters on the same frequency. If this happens, it may be necessary to take off the ignition key and try again. Another reason why your key fob won't work could be because the fob has been deprogrammed. The Key Lab can happen if your key is exposed to water or if it is not properly removed after replacing the battery. Usually, you can re-set the program of your car by following the instructions provided in the owner's guide. If you're not able to, you can visit an expert locksmith or dealer to complete the task for you. Water damage The Citroen C4 is a highly reliable car, but it's still a machine with hundreds of interconnected parts. Like every car it is likely to suffer occasional breakdowns from time occasion. In some cases the issue is easily repaired. However, in other instances you may need to visit a mechanic or contact a professional for assistance. The most common reasons that the C4's key fob ceases functioning are dead battery and water damage, signal interference and issues with the receiver module. Water damage can be caused by sweat or moisture on the key fob's circuit board. This could cause a short circuit in the circuit which can result in an unresponsive keyfob or battery drain. Keep your key fob away from the water and put it in an airtight bag. A multimeter can be used to measure the voltage of your battery. A successful test will reveal values that range from 12 to 13. If your battery doesn't produce these values, it could be defective. This means you'll have to change the battery. Faulty receiver module A damaged receiver module may cause the key fob to cease working. This is a common issue for Citroen owners, as the key fob must transmit a signal to the door handle to open and start the vehicle. If the key fob is unable to transmit this signal, it will not work and must be replaced. This is usually handled by a technician or a dealer. Citroen C4 keys can malfunction for a variety. It could be due to a dead coin-cell battery or damage to the signal or water. The first step to troubleshoot is to examine the batteries of the key fob and to check for obvious signs of damage. This can be done by opening the keyfob, then removing its battery to take a closer view. If you find a drained battery replace it with a new one. Make sure that the new battery is of the same voltage, size and specifications. Make sure you connect the fob before replacing it. Problematic 12 Volt Battery Most newer cars come with key fobs that allow you to lock and unlock your vehicle from a distance. These devices send a signal the car to control the locks and use battery power to operate. However, the batteries can fail over time. The good news is the replacement battery is affordable and easy to install. You can use a screwdriver with a flat blade to open the fob, or your owner's manual might have instructions on how to do it. Replace the battery with one of the same size and type as the original. Different kinds of batteries have different voltages, which can cause the fob to cease working or display a low battery alert. Be sure to align the battery in such that the plus and negative numbers are in line with the initial orientation. This will ensure that the chip is receiving the right signals. The issue could be due to a malfunctioning receiver module. In this instance, it is recommended to call the dealer for further diagnosis and repairs. Unpaired keys that require Reprogramming The remote for your car's key could stop working due many reasons. Fortunately, the majority of these problems can be resolved quickly and easily. The most common reason is a dead coin battery which can be replaced in just a few minutes at many auto parts stores. But, it's crucial to ensure that the new battery is properly installed. Metal retaining clips need to be properly tightened, and the contacts of the battery must be cleaned. A faulty receiver module, or signal interference, is a different possibility. If the key fob fails to receive a strong signal from the receiver it could not lock or unlock the doors as well as start the vehicle or operate the hands free system. In these situations you can reset the receiver by disconnecting the battery for a short period of time. Smart keys, which include an integrated security chip that disables the vehicle's standard immobiliser system they are more expensive than traditional metal keys and can cost up to $500 to replace. It is best to have two keys that work for your C4 to save money on these costly costs. This replacement remote key fob is cleaned and refurbished with new internal components and tested before sending to you.