Changing the Battery in Your Mini Key Fob

The key fob makes it easy to lock and unlock your vehicle from a distance. It also allows you to activate the panic button on your car that can deter thieves.

If your fob isn't working, it can be fixed by following a few steps. First, check that the battery is fresh. Remove the battery from the ignition, then press the lock button fast three times.

Battery

The most simple way to fix the battery of your key fob is to replace it. The device uses a small coin-shaped 3V battery (CR2032 or CR2025) that is available in general stores and home improvement stores, and a few auto parts stores. Be sure to use an original battery -Old batteries are generally no longer good for anything and can damage the circuit board.

You'll need to start by prying the fob open. It might be a bit tight but with the help of a flat screwdriver you should be able separate the halves. Attach the screwdriver to the seams on both sides of the fob, and lift the clips that hold it. They are easy to break therefore, proceed slowly and with care.

Reassemble the fob after replacing the battery, and test to determine if it functions as it should. If it doesn't work after pressing the button multiple times, ensure that the contacts are clean. You could also try the fob with a spare to see if the problem is not specific to the key. If not, there could be another reason for the key fob not to work. It could be due to a worn button, for example. This will only make the button function occasionally and not all the time.

Interference

The key fob is a small transmitter to send a short-range radio signal to a receiver in your vehicle. Its primary function is to allow your car to recognize the fob, and open its doors when you come close to it and start when you push the ignition button within.

The issue is that interference can occasionally interfere with the transmission. 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 that operate on the same frequency as the fob could interfere with its signal. Garage door openers and tire-pressure monitoring devices may be affected. Even a transmitter in your home could be interfering however it would be difficult for professionals to test.

Your key fob may also need to be reprogrammed. The transmitter in the fob you have purchased must be recognized by the Mini's receiver. A unique code is then generated for each pairing. Fobs are typically programmed after being removed or replaced, or when you purchase a replacement mini keys and, in some instances the battery is changed. To reprogram a fob follow the directions in the owner's manual or visit a dealer for assistance.

Chip that is not working

Modern electronic key fobs offer more convenience and functions than manual keys. However they also are more prone to damage. One of the most common problems is a faulty chip that stops your key fob from working properly. Fortunately, it's usually an simple fix.

If your car key fob fails to turn on it could be a sign of a malfunctioning chip. The issue is usually fixed by replacing the battery, which is cheap and easy to find at the hardware store or a big-box retailer. To avoid further problems make sure to purchase the right battery with the vehicle model you are using.

The fob shouldn't be exposed to water, or soapy residue. Water can cause corrosion, which can cause interference with the circuit board. If this is the situation you'll need to wash the board with isopropyl or an electronic cleaner prior to installing a new battery.

Once the old battery is replaced, it is a good idea to test the fob's functionality before driving the vehicle. Check the voltage of the new battery using an voltmeter and make sure it is safe. If not, you could require replacing the entire remote chip. A trained technician from a dealership will help you determine the best solution for your vehicle.

Reprogramming

We have a brand new replacement slim key fob available to replace your old one. It works exactly the same way as the original key fob. the complete fitting instructions come with every order. We also offer a help line for all of our customers.

Sometimes, your mini key programming key fob starts to fail or cease working completely. It can be a hassle when the car will not start. You must wait until it starts again. Reprogramming the keyfob is a straightforward solution.

The first thing to do is make sure that the key fob battery is in good condition and that it has not been replaced. After a new battery has been installed, it is not able to be reprogrammed and would need to be replaced again.

Once the key fob is programmed, it is able to communicate with the vehicle and control all its functions such as the radio as well as the air conditioning system, and even the windows and sunroof. It can also activate comfort access. This means the doors for the driver will automatically open and close when you enter the vehicle or that the seats will move to help you get into and out. The key fob can then enable the climate control settings and mirrors to suit your preference, and can even alter the radio's settings.