Mini Replacement Key
It may be that your key fob requires a new battery. It could also need to be reprogrammed to fit your specific vehicle.
Typically, you can avail this service at your dealership. You can also call a local locksmith. They will use your car's VIN number to make a new key for you.
Battery
The battery in your key fob may run out and stop working after a certain time. Replacing it is fast and simple and can be completed at home. Simply pry open G28 Car Keys and then remove the old battery and then snap in the new ones. It will require some effort however you'll be driving back to normal in the blink of an eye. If you require an internal key blade for your key fob, make sure to purchase it at the time of ordering.
Programming
The key that came with your Mini Cooper includes a chip which communicates with the car to open the doors and turn on the engine. It's vital to have a backup, whether it's for a spare key or in the event that you lose yours. You might be able get a key that is generic at a hardware shop, however, you'll require an locksmith to program it to your car to ensure it can function.
The process for coding is complicated and time-consuming. It requires taking the CAS module out of the car and then soldering into it to extract the key data. The new key will have to be programmed by a licensed BMW/MINI dealer or an expert BMW/MINI coder. This is why most locksmiths are reluctant to take on the task. You could also try an independent BMW/MINI Coder in your area. They will utilize an ID44 chip programmer to connect to your car's BC1 module and read the EWS (immobilizer) code from the old key to program the new one.
VIN Number
Each vehicle has its own unique VIN number. This VIN number is comprised of 17 characters. These may appear random, but they have specific meanings. They are designed to protect vehicles from fraud and theft.

The three initial characters of the VIN code signify the location and the manufacturer of the vehicle. These codes are referred to as the World Manufacturer Identifier (WMI). The characters 4-8 provide additional details about the vehicle, including its specifications and model. The ninth character is the security code that confirms that the VIN is valid. The last character is the year the vehicle was built.
You can find the VIN number on a variety of locations inside your car. It is typically printed on a sticker that is visible to you when you look at the dashboard or the windshield. You can also find it on the driver's side of the door jamb by opening that door and looking inside.
Before signing a contract to buy a vehicle that is used, be sure to check the VIN. A VIN decoder can help you comprehend the VIN so that you don't purchase stolen vehicle or one with damage. VINs are standardised since 1981. However, prior to 1981, vehicles used an alternative format that can be difficult to understand.
Lockout Service
Modern key fobs are outfitted with a transponder that will disable the immobiliser system of the vehicle. The chips are housed within the key and emit a signal which is received by the vehicle's CAS unit which then begins the engine. The advantage of this feature is that it will to stop thieves from using stolen keys to start your vehicle.
MINI, a sub-division within BMW has a track record of maintaining high standards in design and technology. Whether your MINI model is old or new you can avail the replacement of your key for it. However the service is generally designed for drivers who own cars that are compatible with key fobs.
If your key fob has stopped functioning, it could simply require a new battery. A common sign of this is if it takes longer than usual to activate the lock/unlock button. If this is the case, you should contact a local locksmiths to have the fob battery replaced. The process should take around 10 to 30 minutes to complete. This is a faster and cheaper alternative to replacing the entire keyfob. You can also utilize this service if you've locked yourself out of your car and need help getting back in.