Changing the Battery in Your Mini Key Fob

The key fob makes it easy to lock and unlock your vehicle from an extended distance. It can also activate your vehicle's panic button, which can deter break-ins.

If your device stops working the device can be repaired by following a few steps. First, make sure the battery is fresh. Then, you can try removing it from the ignition by pressing the lock button three times quickly.

Battery

The most straightforward way to repair the battery of your key fob is to replace it. The key fob is powered by a tiny coin-shaped 3V battery (CR2032 or CR2025) which is typically available in general stores as well as home improvement shops and a few auto parts stores. Use a brand new battery. Old batteries can damage the circuit boards and cease to be useful.

Start by prying the fob open. It may be a bit tight, but with the help of a flat screwdriver you should be able to separate the halves. After that, slide the screwdriver in the seam on both sides of the fob, and then lift a couple of clips to secure it. These are easily broken so work slowly and carefully.

After replacing the battery then reassemble the fob and test it to see if everything is working according to plan. If it's not working try pressing the button a few times and verifying whether the contacts are clear. It is also possible to test it using a spare key fob to determine whether the issue is limited to the specific key. If not, then there could be another reason behind the key fob to not function. For instance, it could be that the button is worn out. This could cause the button to work occasionally, not every time.

Interference

The key fob is a tiny transmitter to send the short-range radio signal to a receiver within your vehicle. Its function is to permit your car to recognize the fob and unlock its doors when you come close to it and start when you press the ignition button inside.

The problem is that interference can sometimes interfere with that 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 that operate on the same frequency as the fob could also interfere with its signal. This includes garage door openers as well as tire-pressure monitoring systems. Even a transmitter in your home could be interfering however it would be difficult for a professional to test.

It's possible that your key fob just needs to be reprogrammed. The transmitter on your key fob must be recognized by the Mini's receiver. A unique code is used for each pairing. Fobs must be reprogrammed after they have been disconnected or replaced, after you buy a new one and in some cases when the battery is replaced. Follow the instructions in the owner's manual to reprogram your key fob or ask a dealer for assistance.

Faulty chip

Modern electronic key fobs offer greater convenience and efficiency than traditional manual keys. However, they are also more susceptible to damage. A defective chip is one of the most frequent problems that can stop your key fob from working correctly. Fortunately, this is usually an simple fix.

If your car key fob isn't able to start up it could be a sign of a faulty chip. The issue can be solved by replacing the battery, which is inexpensive and easy to locate at a hardware store or big-box retailer. Make sure you buy the right replacement battery compatible with the model of your car to avoid recurring problems.

It is also essential to ensure that the fob isn't exposed to water or soapy residue. The presence of water can cause corrosion, which can interfere with the circuit board. If this is the case, you'll have to wash it with isopropyl alcohol or an electronic cleaner before putting in the new battery.

When the old battery is replaced, it's a good idea to test the fob's functionality prior to driving the car. Utilizing a voltmeter to check the voltage of the new battery to determine whether it is at a safe level. If not, it might be necessary to replace the entire chip in the remote. A certified technician from the dealership can assist you in determining the most suitable solution for your vehicle.

Reprogramming

We have a replacement slim key fob available to replace the old one, it works exactly the same way as the original key fob, full fitting instructions are provided with each order and we also offer a help line for all customers.

Sometimes your mini cooper key key fob starts to fail or stop working completely. It can be very frustrating when your car won't start. You must wait until it gets back to normal. Reprogramming the keyfob can be a simple solution.

First, make sure the battery in your key fob is in good condition and has not been replaced. After a new battery has been installed, it will not be reprogrammed, and it will require a replacement.

Once the key fob has been programmed, it can communicate with the vehicle and control all of its functions, including the radio, the air conditioning system and even the sunroof and windows. It is also able to activate the comfort access feature that means that the door for the driver will unlock and close automatically when you enter the vehicle, or the seats will be able to move up and down to allow you in and out. The key fob can then alter the mirrors, radio and temperature control settings according to your preference.