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Citroen C4 Key Fob Replacement The Citroen C4 Picasso, a small family vehicle/compact SUV that is truly innovative, comes with some great features. It's big enough for five people, and is an excellent vehicle for getting around town. Sometimes the key fob ceases working due to pairing issues. This problem may be resolved if instructions are followed correctly. However, a professional with the right equipment is required for certain makes of vehicles. Dead coin battery A dead battery is the most frequent problem that affects remote keys. However, there is a simple solution. All you have to do is replace the battery in the coin. The batteries are available at your local auto store and look like small silver coins. When you replace the battery, your vehicle should be able unlock and lock. Another reason your key fob isn't working is due to interference. This can occur due to various factors, including objects, weather conditions, or other transmitters operating on the same frequency. If this happens, it may be necessary to take the key from the ignition and try again. The deprogramming of your key fob may also be the cause for the key's inability to function. This can happen if your 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 are unable do this, consult a professional locksmith dealer to assist you. Water damage The Citroen C4 is a highly reliable car, however it's a machine with hundreds of interconnected components. It's not uncommon for a Citroen C4 to experience a malfunction. In some cases the problem is easily resolved. In other cases it is possible visit a mechanic or call for assistance. The most frequent reasons why the C4's main fob stops functioning are dead battery or signal interference, water damage and receiver module problems. The moisture or sweat that accumulates on the circuit board of the key fob could cause water damage to the circuit board of the key fob. The circuit could be prone to become shorted, which can lead to a battery drain or dead key fob. Keep your key fob away from the water and put it in the bag of plastic. citroen replacement key fob The Keylab can be used to measure the voltage of your battery. A successful test will give values between 12 and 13. If your battery fails to produce these numbers, then it may be defective. This means that you will need to replace the battery. Faulty receiver module A malfunctioning receiver can cause the key fob to stop working. This is a common issue for Citroen owners, as the key fob is required to send a signal to the door handle to open and start the car. If the key fob fails to send this signal, it will not function and should be replaced. This can be carried out at a dealership for vehicles or by a professional mechanic. There are many different things that can go wrong with your Citroen C4 key fob. This can be a dead coin-cell battery, water damage or signal interference. The first step to troubleshoot is to test the batteries on the key fob and to check for obvious indications of damage. This can be done by taking the keyfob apart and removing its battery to get a better look. If you find a drained battery, replace it with a new one. Make sure that the new battery has the same voltage, size and specification. Also, make sure the fob is securely snapped together before replacing it. Poor 12 volt battery Most newer cars come with key fobs that allow you to lock and unlock your vehicle from some distance. These devices send a signal to the car to control the locks and operate on battery power. However, the batteries may fail over time. The good news is that a replacement battery is affordable and simple to replace. You can use a screwdriver with a flat blade to pry the fob open or the owner's manual may contain instructions on how to do it. When replacing the battery, be sure that you're using a battery of the same type and size as the original. Different batteries can have different voltages, which could cause your device to stop functioning or display a low battery warning. Be sure to align the battery in that the positive and negative signs are in line with the initial orientation. This ensures that the chip is receiving correct signals. The issue could result from a malfunctioning module. In this scenario, it is recommended that you contact the dealer for further diagnosis and repairs. Unpaired key requiring reconfiguration The remote for your car's key could stop working due many reasons. Fortunately, most of these problems can be resolved quickly and easily. Most of the time, a dead coin-cell battery is the cause. It can be replaced in a couple of minutes at the majority of auto parts shops. However, it is important to ensure that the new battery is correctly installed. Metal clips for retaining must be properly tightened and contacts of the battery should be cleaned. A defective receiver module or signal interference is a second possibility. If the key fob is not receiving a sufficient signal from the receiver, it will not be able to lock or unlock doors as well as start the car or use the hands-free system. In these cases you can reset the receiver by dismantling the battery for a couple of minutes. Smart keys are more expensive and can cost as high as $500 to replace. They are equipped with an electronic security device that disables the immobiliser of your car. It is recommended to have two keys working for your C4 in order to save money on these costly costs. The replacement remote key fob has been rebuilt and tested with brand new internal components prior to being shipped to you.