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Citroen C4 Key Fob ReplacementThe Citroen C4 Picasso is a compact SUV that is small enough for a family, and has some genuinely innovative features. It's big enough for five people, and it's a great way to get around town.Sometimes keys fobs stop working due to pairing issues. This issue can be solved if instructions are followed properly. However, a professional with special equipment is required for specific makes of vehicles.Dead coin batteryThe most common problem with remote key fobs is the battery being dead. However, there is an easy fix. All you need to do is replace the coin battery. These batteries look like little silver coins and can be purchased in your local automotive shop. When you replace the battery, your car should be able of unlocking and lock.Another reason your key fob might not work is due to interference. This can be caused by numerous factors, like weather conditions, objects, or other transmitters operating on the same frequency. If this happens, it may be necessary to take the ignition key and try again.Another reason why your key fob isn't working could be that the device has been deprogrammed. This could happen if the key is exposed to water, or if it isn't removed correctly after replacing the battery. It is usually possible to restore the programming by following the instructions in the owner's manual. If you cannot get it done, you can go to a dealer or professional locksmith to do it for you.Water damageCitroen C4 has a high degree of reliability, but it's a complicated machine that has hundreds of interconnected parts. Like every car it is likely to have periodic breakdowns from time to moment. In some instances it is easy to get the issue fixed. In some cases, you may need to contact assistance or see an expert. The most common causes of the C4 key fob not functioning are a dead coin battery, signals interference, water damage and receiver module issues.Water damage can result from sweat or moisture on the circuit board. This could cause the circuit to short, leading to a battery drain or dead key fob. Keep your key fob out of the water and in the bag of plastic.You can also test the battery's voltage using a multimeter. If the test is successful, you will get 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 moduleA defective receiver can cause the key fob to stop working. This is a common problem for Citroen owners, since the key fob must transmit a signal to the door handle to allow the door to be opened and start the car. The key fob won't work if it does not transmit the signal. It needs to be replaced. This is typically done by a mechanic or a dealership.Citroen C4 keys can malfunction for a variety. This includes a dead coin battery water damage, signal interference or a defective electronic chip. To begin www.thekeylab.co.uk , test the batteries of the key fob, and look for obvious indications. This can be done by opening the key fob and removing the battery to gain a better view.If you discover a dead battery, replace it with a new one. Make sure the new battery has the same voltage, size, and specifications. Make sure that you fully fix the fob in place prior to replacing it.Problematic 12 Volt BatteryA majority of modern cars have key fobs which allow you to lock or unlock your vehicle remotely. These devices send a signal the car to control the locks and operate on battery power. Batteries can degrade over time. The good news is the replacement battery isn't expensive and simple to install. You can pull the fob off using a flat-bladed screwdriver, or you can get instructions in your owner's guide.When replacing the battery, make sure you're using a battery that's 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. Be sure to align the battery so that the plus and minus marks match the orientation of the original. This will ensure that the chip is receiving the right signals. It is also possible that the issue could result from a malfunctioning receiver module. In this scenario it is recommended to contact your dealer to get further diagnostics and repairs.Unpaired keys that require the reprogrammingCar key remotes can cease to function due to various reasons. Fortunately, most of these problems can be fixed quickly and easily. The most frequent cause is a dead coin battery which can be replaced in just a couple of minutes at most auto parts stores. However, it is important to ensure that the new battery is correctly installed. Metal retaining clips need to be tightened properly and the battery's contact points should be clean.A faulty receiver module, or signal interference, is a different possibility. If the key fob fails to receive a clear signal from the receiver it might not be able to unlock or lock the doors as well as start the vehicle or operate the hands-free system. In these cases you can reset the receiver by removing the battery for several minutes.Smart keys are more expensive and could cost up to $500 to replace. They have an electronic security device that disables the standard immobiliser of your vehicle. To avoid these costly costs it's best to have at least two keys working for your C4. This replacement remote key fob is upgraded with new internal parts and tested before delivering to you.