Mini Replacement Key
It may be that your key fob needs an upgrade to its battery. It could also need to be reset to work with your vehicle.
This service is usually available at the local dealership. You can also call a locksmith in your area. They will utilize the VIN number of your vehicle to create a new key.
Battery
The battery in your key fob could run out and stop working after a certain time. Replacing it is fast and simple and can be done at home. Simply open your fob, remove the old batteries and replace them with the new ones. It'll take some effort however you'll be driving back to normal in the blink of an eye. Some key fobs require an internal key blade, so please add that if you require it when placing your order.

Programming
The key that came with your Mini Cooper comes with a chip that communicates with the vehicle to open the doors and start the engine. It is essential to have a backup, whether it's for a spare key or in the event that you lose yours. You might be able find a generic key in a hardware store however, you'll require an expert locksmith to program it to your car to ensure it functions.
The process of coding is complicated and time-consuming. The CAS module should be removed from the car and the key's data extracted through soldering. The new key will need to be programmed by a licensed BMW/MINI dealer or a professional BMW/MINI coder. This is the reason why most locksmiths will turn the job away. If you're able, consider a local independent BMW/MINI coder instead. 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 composed of 17 characters, which can seem random but have specific meanings. G28 are designed to safeguard cars from fraud and theft.
The first three characters of the VIN indicate where the vehicle was made and the name of the manufacturer. These codes are referred to as World Manufacturer Identifier (WMI). The characters 4-8 provide more details about the car that include the model and its characteristics. The ninth character is a security code that proves the VIN as valid. The last character is the year that the vehicle was produced.
The VIN number can be found in numerous places on your vehicle. It is typically printed on the sticker which is visible when you glance at the dashboard or windshield. It can also be found on the driver's side of the door jamb by opening the door and looking inside.
If you're considering buying a used car, make sure to verify the VIN number before signing the contract. A VIN decoder will help you understand the VIN number to avoid purchasing damaged or stolen vehicles. VINs have been established since 1981. However, earlier vehicles had an alternative format that can be difficult to understand.
Lockout Service
Unlike traditional car keys, modern keys come with a transponder chip which can disarm the vehicle's standard immobiliser system. These chips are embedded in the key and send an alert to the CAS of the vehicle, which will start the engine. The advantage of this feature is that it helps keep thieves from using a stolen key to start your vehicle.
MINI, which is a sub-division of BMW has a reputation of maintaining high standards in style and technology. It is possible to replace the keys on any MINI model, whether old or new. However this service is typically designed for drivers who own cars that are compatible with key fobs.
If your key fob has stopped functioning, it might need a new battery. One common symptom is the fact that it takes more time than normal to press the lock or unlock button. If this is the situation it is recommended to contact a locksmith local to repair the battery in your fob. The process will take between 10 to 30 minutes. This is a speedier and less expensive option than replacing the entire key fob. This service is also available in the event that you've locked yourself out of your vehicle and require assistance to get back in.