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Citroen C4 Key Fob Replacement
The Citroen C4 Picasso is a small SUV for families that has some truly innovative features. It's spacious enough for five people, and is an excellent way to travel around the city.
Sometimes, a keyfob may cease to function due to pairing problems. This problem may be resolved if instructions are followed properly. However, a professional equipped with specific equipment is required for certain makes of vehicles.
Dead coin battery
The most common problem with remote key fobs is a dead battery. It is a simple fix however. All you have to do is replace the coin battery. The batteries are available at your local auto retailer and look similar to small silver coins. After you replace the battery, your car should be able of unlocking and lock.
Another reason why your key fob isn't working is due to interference. It could be caused by several factors, including objects, weather conditions, or other transmitters using the same frequency. If this happens, it may be necessary to remove the ignition key and try again.
The fact that your key fob is not programmed could also be the cause of the failure of the key to function. This can happen if the key is exposed to water, or if it isn't removed correctly after replacing the battery. You can usually restore the programming by following the directions in the owner's manual. If you're unable to do this, you can seek out a professional locksmith or dealer for assistance.
Water damage
The Citroen C4 is a highly reliable car, but it's an automobile with a lot of interconnected parts. It's not common for a car like the Citroen to have a breakdown. In some instances, the problem is easily solved. In some instances you may have to contact a professional for assistance or see an expert. The most common reasons for why the C4's key fob stop functioning are dead battery and signal interference, water damage and receiver module issues.
Water damage can result from sweat or moisture on the key fob's circuit board. This can short the circuit which can result in dead key fobs or battery drain. Keep your key fob away from the water and put it in the bag of plastic.
A multimeter can be used to measure the battery's voltage. A successful test will reveal values ranging from 12 to 13. If your battery does not produce these values, it may be defective. This means that you'll require replacing the battery.
Receiver module that is defective
A faulty receiver can cause the keyfob to stop working. Citroen owners often encounter this issue because the key fob needs to send a signal to the door handle to unlock the vehicle and start it. The key fob won't function if it is unable to transmit the signal. It needs to be replaced. This is typically handled by a mechanic or a dealer.
There are a variety of things that could go wrong with your Citroen C4 key fob. This can be the battery of your coin-cell is dead, signal interference or water damage. To begin troubleshooting, check the battery of your key fob and look for obvious indications. This can be done by opening the key fob and then removing the battery for a clearer view.
Replace the battery in case it is empty. Make sure the new one has the same voltage, size, and specification. Make sure you fix the fob in place prior to replacing it.
A faulty 12 Volt battery
Most modern cars come with key fobs that let you to lock and unlock your vehicle from some distance. These devices send signals to the car to control the locks and use battery power to operate. However, batteries can fail over time. The good part is that the replacement battery isn't expensive and easy to replace. You can take the fob apart by using a flat-bladed screwdriver. you can get instructions in the owner's manual.
Replace the battery with one of the same type and size as the original. Different types of batteries come with different voltages, which can cause the fob to stop working or display a low battery alert. Remember to also orient
G28 Car Keys in such that the plus and negative symbols match the original orientation. This will ensure that the chip is receiving the proper signals. The issue could result from a malfunctioning receiver module. In this case, you should contact your dealer for further assistance and repairs.

Unpaired key requiring reprogramming
The remote for the car key could stop working due many reasons. Fortunately, most of these problems are fixable quickly and easily. Most of the time an inoperable coin-cell battery is the cause. This can be easily replaced in just a few moments at most auto parts shops. It is crucial that the new battery is installed correctly. Metal retaining clips should be tightened in a proper manner and the battery contacts should be clean.
Another possibility is a faulty receiver module or signal interference. If the key fob fails to receive a strong signal from the receiver, it may not be able lock or unlock the doors and start the vehicle, or operate the hands free system. In these instances you can reset the receiver by removing the battery for a few minutes.
Smart keys, that have an integrated security chip that disables the vehicle's standard immobiliser, are more expensive than traditional metal keys and can cost up to $500 to replace. It is recommended to keep two keys working for your C4 in order to avoid the cost of these keys. This replacement remote key fob is cleaned and refurbished with new internal parts and is tested before sending to you.