Changing the Battery in Your Mini Key Fob

The key fob is a simple way to lock and unlock your vehicle from a distance. It can also activate the panic button on your vehicle which can deter break-ins.

If your device ceases to function, it can be fixed by following a few steps. First, check that the battery is new. Then, try removing it from the ignition and pressing the lock button three times rapidly.

Battery

The battery you use in your key fob is one of the easiest solutions. The fob uses a small coin-shaped 3V battery (CR2032 or CR2025) that is generally available in general stores, home improvement shops, and a few auto parts stores. Make sure you get a new battery -old batteries are usually not useful anymore and can damage the circuit board.

Begin by removing the fob. It may be a bit tight, but with the aid of a flat screwdriver you will be able to break the halves. Place the screwdriver through the seams on both sides of the fob and lift the clips that hold it. They are easily broken so be cautious and work slowly.

After replacing the battery replace the fob, then test it to see if everything is working exactly as it should. If it isn't working after pressing the button a few times, check that the contacts are clean. You could also try it with a spare fob to determine if the issue is confined to your key. If it isn't then there could be a different reason for why your key fob isn't functioning. It could be due to a worn-out button, as an example. This would only cause the button to work a few times and not always.

Interference

The key fob is powered by a tiny transmitter that transmits a short-range signal to a receiver located in your car. Its function is to allow your car to recognize the key fob, then open its doors when you are near it, and then turn on when you press the ignition button.

Interference can sometimes interfere with communication. For example, if you have your second-generation Apple Pencil charged while you're holding the fob, it could prevent you from unlocking the car (via iGeneration).

Other electronic devices operating on the same frequency could also interfere with the fob's signal. This includes garage door openers as well as tire-pressure monitoring systems. It's even possible that an RF transmitter inside your home might be interfering with the fob's signal, although this would be difficult to identify without a professional test.

The key fob might require reprogramming. This procedure requires the transmitter in the fob to be recognized by the receiver inside your Mini and a distinct code is used for each pairing. The fob needs to be programmed after they are disconnected or replaced after you purchase a replacement and, in some instances, when the battery is changed. Follow the directions in your owner's manual to reprogram your key fob or consult a dealer.

Faulty chip

Modern electronic key fobs provide the convenience and functionality of traditional manual keys, however they are also more vulnerable to damage. One of the most common issues is a damaged chip that will prevent the fob from functioning properly. Fortunately, this is usually an simple fix.

If your car key fob fails to start up, it could be a sign of a damaged chip. It is usually possible to fix the problem by simply replacing the battery. This is a cost-effective and simple fix that can be purchased at any hardware store or retailer. To avoid any further issues ensure you buy the correct battery with the vehicle model you are using.

The fob shouldn't be exposed to water or soapy residue. Water can cause corrosion and affect the circuitry. If this is the situation it is necessary to clean the board with isopropyl or electronic cleaner prior to installing the new battery.

It is a good practice to test the functioning of the fob prior to operating the vehicle. With a voltmeter, test the voltage of the replacement mini cooper key battery to determine whether it's at an acceptable level. If not then you may require replacing the entire remote chip. A trained dealer technician can assist you in determining the best solution for your vehicle.

Reprogramming

We provide a slim replacement key fob that can replace your old key fob. It works the same as the original and the full fitting instructions are included with every order. We also offer the customer with a support line.

Sometimes your mini key fob starts to malfunction or cease to function completely. This can happen due to a variety of reasons and can be annoying as the vehicle will not start and you'll have to wait for a while to be able to drive again. But, reprogramming the fob may be the solution and is easy to do.

The first thing to do is ensure that the battery in the key fob is in good working order and has not been replaced. Once a new key fob battery is installed, it is not able to be programmed again. It will need to be replaced.

Once the key fob is programmed, it will be able to communicate with the vehicle and control all its functions, including radio, air conditioning and even the sunroof and windows. It is also able to activate the comfort access feature, which means that the driver's door will open and close automatically when you enter the vehicle, or the seats will move up and down to get you in and out. The key fob is able to adjust the mirrors, the radio and the temperature control settings according to your preference.