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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 some truly innovative features. It's spacious enough for five people and is a great way to get around town. Sometimes, a keyfob will not work due to pairing issues. This problem may be solved if instructions are followed. For certain vehicles, a technician will require specialized tools. Dead coin battery The most frequent issue with remote key fobs is a dead battery. It is an easy fix, however. All you need to do is replace the battery on your coin. These batteries look like little silver coins and are available at the local auto store. Once you have replaced the battery, then you'll be secure enough to lock and unlock your vehicle. Interference is another reason why your key fob might not work. This could be due to several factors, including objects weather conditions, or other transmitters using the same frequency. If this happens, it may be necessary to take the key from the ignition and try again. Another reason why your key fob might not work could be that the device is not programmed properly. This could happen if the key is exposed to water or it's not properly removed after replacing the battery. It is usually possible to restore the programming by following the guidelines in the owner's manual. If you're not able to do this, you can ask a professional locksmith or dealer for assistance. Water damage Citroen C4 has a high degree of reliability, but it is still a complex machine with hundreds of interconnected parts. Like all cars it could experience occasional breakdowns from time occasion. In some instances, the issue is easily resolved. However, in other instances you may need to see a mechanic or call for help. The most frequent causes of the C4 key fob not functioning are the battery being dead, signals interference, water damage and receiver module problems. Water damage can be caused by sweat or moisture on the circuit board. citroen key blade can be damaged and result in dead key fobs or battery drain. To prevent this from happening, try to keep your key fob from water, or place it in a bag prior to using it. A multimeter can be used to measure the voltage in your battery. If the test is successful, you will get values that range from 12 to 13 If your battery isn't generating these values, it could be defective. This means that you'll need to replace the battery. The receiver module is not working properly. A defective receiver can cause the key fob to cease working. This is a common issue for Citroen owners, as the key fob has to transmit a signal to the door handle to unlock and start the vehicle. If the key fob fails to transmit this signal, it won't work and must be replaced. This is usually done at a vehicle dealership or by an experienced mechanic. Citroen C4 keys can malfunction due to a variety reasons. It could be the battery of your coin-cell is dead, water damage or signal interference. To begin troubleshooting, check the batteries on the key fob and check for obvious signs. This can be done by opening the keyfob, then removing its battery for a more thorough look. If you discover a depleted battery replace it with a fresh one. Make sure that the new battery is of the same size, voltage and specifications. Make sure you connect the fob prior to replacing it. Problematic 12 Volt Battery A lot of newer vehicles have key fobs that allow you to lock or unlock your vehicle remotely. These devices send a signal to the vehicle that controls the locks. They are powered by batteries. Batteries can fail with time. The good news is that the replacement battery is inexpensive and easy to install. You can pry the fob out with a flat-bladed screwdriver or you can get instructions in the owner's manual. Replace the battery with one of the same size and type as the original. Different batteries may have different voltages which can cause your fob to stop working or display a low-battery message. Be sure to align the battery so that the plus and minus marks correspond to the orientation of the original. This ensures that the chip is receiving right signals. It is also possible that the issue could be caused by a defective receiver module. In this case it is recommended that you contact the dealer for further advice and repairs. Unpaired keys that require the reprogramming The remote for your car's ignition may stop working due to many reasons. The majority of these issues are easily and quickly fixable. Most often, a dead coin-cell battery is the reason. This can be easily replaced in a matter of seconds at most auto parts shops. It is crucial that the new battery be installed correctly. Metal retaining clips must be tightened properly and the contacts of the battery should be cleaned. Another possibility is a faulty receiver module or signal interference. If the key fob isn't receiving a sufficient signal from the receiver, it will not be able to lock or unlock doors as well as start the car or operate the hands-free system. In these situations, you can reset the receiver by dismantling the battery for a period of time. Smart keys are more expensive and can cost as high as $500 to replace. They are equipped with a security chip that disables the standard immobiliser of your car. It is recommended to keep two keys working for your C4 to avoid the cost of these keys. This key fob for replacement is refurbished with new internal components and tested before delivering to you.