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Changing the Battery in Your Mini Key Fob The key fob can be a convenient way to lock or unlock your car from a distance. It can also activate your vehicle's panic button, which can deter break-ins. You can repair your fob by following few simple steps. First, check that the battery is brand new. Remove the battery from the ignition, then press the lock button quickly three times. Battery The easiest way to fix your key fob's battery is to replace it. The fob uses the small coin-shaped battery (CR2032 or and CR2025) It can be accessible in most general stores as well as home improvement stores and auto parts stores. Make sure you get a new battery -older batteries are typically not useful anymore and could cause damage to the circuit board. Start by removing the fob. It may be necessary to make use of a flat screwdriver to break the two halves. Then, you can insert the screwdriver in the edges of the fob, and then lift the clips that hold it. They are very easy to break therefore, work slowly and carefully. Reassemble the fob after replacing the battery, and test to determine if it functions as it should. If it still doesn't work try pressing the button several times and checking whether the contacts are clear. You could also try it with a spare key fob to see if the problem is confined to your key. If not, then there could be another reason behind the key fob not to work. For example, it could be that the button is worn out. This would only make the button function occasionally but not continuously. Interference The key fob utilizes tiny transmitters to transmit the short-range radio signal to a device in your vehicle. Its purpose is to allow your car to recognize the fob and unlock its doors when you come close to it, as well as start when you hit the ignition button inside. The problem is, interference can sometimes hinder this communication. If you charge your second-generation Apple Pencil while holding the fob (via iGeneration) it could stop you from unlocking your vehicle. Other electronic devices operating at the same frequency can also interfere with the fob's signal. Garage door openers or tire-pressure monitoring devices may be affected. It is also possible that an RF receiver inside your home may be interfering with the fob's signal however, this is difficult to diagnose without an examination by a professional. It's also possible that the key fob simply needs to be reset. The transmitter inside the key fob needs to be recognized by the Mini's receiver. A unique code is then created for each pairing. Fobs typically need to be reprogrammed when they're removed or replaced, if you buy a new one and, in some instances the battery is changed. Follow the steps in the owner's manual for how to program a key fob, or seek assistance from a dealer. Faulty chip Modern electronic key fobs provide convenience and functionality over traditional manual keys, but they are also vulnerable to damage. A faulty chip is among the most frequent problems that can cause your key fob from operating properly. It is usually a simple fix. If your car key fob isn't able to turn on it could be a sign of a damaged chip. It is generally possible to fix the issue by simply replacing the battery. This is a low-cost and simple solution that can be found at any hardware store or large retailer. To avoid problems in the future ensure that you purchase a battery that is compatible with your car model. replacement key for mini cooper be exposed to water, or soapy residue. Water is a common cause of corrosion, which can cause problems with the circuit board. If this is the case, you'll need to clean the circuit board by using isopropyl or electronic cleaner prior to installing an entirely new battery. It is a good practice to test the function of the fob before driving the vehicle. With a voltmeter, test the voltage of the replacement battery to determine if it is at a safe level. If not then it may be necessary to replace the entire chip inside the remote. A trained technician from a dealership will help you choose the best solution for your car. Reprogramming We provide a slim replacement key fob to replace the old key fob. It works exactly as the original one, and full fitting instructions come with every order. We also provide our customers with a helpline. Sometimes, your mini key fob begins to fail or cease working completely. This is due to a variety of reasons and it can be very annoying as the vehicle will not start and you'll need to wait for a long time for the car to start again. However, reprogramming the key fob may be the solution and it is easy to accomplish. The first step is to make sure that the battery in the key fob is in good shape and that it has not been replaced. After a new key fob battery is installed, it cannot be reprogrammed. It will have to be replaced. Once the key fob has been programmed, it will be able to communicate with the vehicle and manage every function, including the radio and air conditioning system and even the windows and sunroof. It can also activate comfort access, which means the driver's doors will automatically open and close when you enter the vehicle or the seats be able to move to help you get in and out. The key fob will then adjust the mirrors, the radio, and the temperature control settings according to your preference.