G28 may be that your key fob requires a new battery. It could also need to be reprogrammed to work with the specific vehicle you have.
This service is usually offered at your local dealership. You can also contact a local locksmith. They will utilize the VIN number of your car to create a new key.
Battery
The battery in your key fob could run out and cease to function over time. It's simple to replace it at home. Simply open the fob, pull out the old battery, and put in a brand new one. You'll need to put in some effort, but soon you'll be back on the road. Some key fobs require an internal key blade so make sure you include it if needed when placing your order.
Programming
The key that comes with the mini Cooper comes with a chip inside which communicates with the car to open the doors and then start the engine. This is the reason it's essential to have a backup key, whether you need it for an extra key or in case you lose yours. You can buy the car key you need at your local hardware store. However, you'll require a locksmith program to use it with your vehicle.
The process of programming is time-consuming and complicated. The CAS module needs to be removed from the car and the key data extracted by soldering. The new key has to be programmed to your vehicle by an authorized dealer or a professional BMW/MINI coder. Many locksmiths will not take on the job due to this. If you are able, try a local independent BMW/MINI coder instead. They will employ 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 made up of 17 characters which may appear random, but they have specific meanings. They are designed to protect cars against fraud and theft.
The three initial characters of the VIN code are used to identify the location of the vehicle and the manufacturer of the vehicle. They are also known as the World Manufacturer Identifier or WMI codes. The characters four through eight provide more details about the car including its specifications and model. The ninth character is a security code that verifies the VIN as valid. The last character indicates the year the vehicle was built.
You can find the VIN number on a variety of places inside your vehicle. The VIN number is usually printed on an adhesive sticker that you can see when you look up on the dashboard or the windscreen. It is also visible on the driver's side of the door jamb by opening the door and looking in.
Before signing an agreement to purchase an used vehicle, verify the VIN. A VIN decoder will help you understand the VIN number, so that you can avoid purchasing damaged or stolen vehicle. VINs were made standard since 1981, but prior to 1981 vehicles had them in a different format that can be difficult to comprehend.
Lockout Service
Modern key fobs are fitted with a transponder that will disable the vehicle's immobiliser system. These chips are located within the key and transmit a signal that is picked up by the CAS unit in the vehicle and then it starts the engine. The benefit of this feature is that it will to stop thieves from using a stolen key to start your car.
MINI, a division of BMW has a track record of keeping high standards in fashion and technology. You can replace the keys for any MINI model, whether it's old or new. This service is targeted to drivers of cars that can be operated by key fobs.
It may be that your key fob is in need of a new battery. If it takes longer to unlock or lock the door than normal it could be a normal sign. If this is the case you should call an expert locksmith in your area to replace the battery on your fob. The process should take 10 to 30 minutes. This is a quicker and cheaper alternative to replacing the entire keyfob. This service is also available if you've locked yourself out of your vehicle and require assistance to get back inside.