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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 genuinely innovative features. It's spacious enough for five people, and is an excellent way to travel around the city. Sometimes, a keyfob might not work due to pairing issues. If you follow the steps properly, this issue can be fixed easily. For certain vehicles, a professional will be required with special tools. Dead coin battery The most common problem with remote key fobs is a dead battery. It's a simple fix however. It is all you need to do is replace the battery with a coin size. The batteries look like small silver coins and are available at the local auto store. When you replace the battery, your car should be able unlock and lock. Interference is a different reason for why your key fob might not work. It could be caused by many reasons, including objects, weather conditions, or other transmitters operating on the same frequency. If this happens, it may be necessary to remove the key from the ignition and try again. The fact that your key fob is not programmed could be the reason for its failure to work. This can occur when the key is exposed to water, or if the battery has not been removed properly after replacing the key. Typically, you can repair the programming of your car by following the instructions provided in the owner's guide. 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 level of reliability, but it is still a complex machine with hundreds of interconnected parts. citroen c1 car key replacement 's not common for a car like the Citroen to have a breakdown. In some instances the issue can be easily repaired. However, in other instances, you might need to visit a mechanic or call for assistance. The most common causes of the C4 key fob not working are a dead coin battery, damage to the water, signal interference and receiver module malfunctions. Sweat or moisture on the circuit board of the key fob could cause water damage. The circuit could be tripped and cause a dead keyfob or battery drain. To avoid this happening, try to keep your key fob away from the water or put it in a bag before using it. A multimeter can be used to check the voltage of your battery. If the test is successful, you will get values between 12 and 13. If your battery isn't producing these values, then it could be defective. This means that you'll require replacing the battery. The receiver module is not working properly. A damaged receiver module may cause the key fob to cease working. Citroen owners are often faced with this issue because the keyfob has to send an indication to the door handle in order to unlock and begin the vehicle. The key fob won't function if it is unable to transmit the signal. It is required to be replaced. This can be performed at a car dealership or by a professional mechanic. Citroen C4 keys can malfunction due to a variety reasons. This includes a dead coin battery signal interference, water damage or a defective electronic chip. The first step to troubleshoot is to test the batteries on the key fob and look for obvious evidence of damage. This can be done by opening the keyfob and then removing its battery to take a closer view. Replace the battery in case it is exhausted. Make sure the new battery has the same voltage, size, and specifications. Also, ensure that the fob is completely attached prior to replacing it. A faulty 12 volt battery A majority of modern cars have key fobs which allow you to lock or unlock the vehicle remotely. These devices transmit a signal to the car to control the locks and use battery power to operate. Batteries can fail with time. The good part is that the replacement battery is inexpensive and easy to replace. You can pry the fob apart by using a flat-bladed screwdriver. you can find the instructions in your owner's manual. Replace the battery with one of the same size and type as the original. Different batteries may have different voltages that could cause your device to stop functioning or display a low battery warning. Also, remember to orient the battery so that the plus and minus symbols coincide with the orientation of the original. This will ensure that the chip is receiving the proper signals. The problem could also be caused by a defective module. If this is the case it is recommended to contact your dealer for further diagnostics and repairs. Unpaired keys require changing the program The remote for the car key could stop working due several reasons. Fortunately, most of these issues are fixable quickly and easily. Most of the time, a dead coin-cell battery is the reason. This can be easily replaced in a matter of minutes at the majority of auto parts shops. It is crucial that the new battery be installed correctly. Metal retaining clips must be properly tightened and the contacts of the battery should be cleaned. A faulty receiver module, or signal interference is another possibility. If the key fob is not receiving a strong enough signal from the receiver, it might not lock or unlock doors, start the car or operate the hands-free system. In these situations it is recommended to reset the receiver by disconnecting the battery for a couple of minutes. Smart keys are more expensive and can cost as high as $500 to replace. They have a security chip that disables the immobiliser of your car. To avoid these costs, it's a good idea to have at least two keys that work for your C4. The replacement remote key fob has been rebuilt and tested with brand new internal components before it is sent to you.