BMW Key Replacement - How a Locksmith Can Help The loss of your bmw spare key fob keys can be a real hassle. Don't fret you can get help from a locksmith. It's less expensive and quicker than the dealership. First, locate an expert locksmith in your area who specializes in BMW. They can cut and program your replacement key replacement bmw. They will also be able to give you tips on how to avoid future issues. The battery needs to be replaced. When you are replacing the battery on your BMW key fob, there are a few important things to remember. First, ensure that the battery you buy is compatible with your BMW key fob. A quick search on the internet can help you locate the best compatible battery. It is also important to ensure you have the right tools. Typically, you'll require the smallest screwdriver or coin to pull open the key fob. Remember to use gentle pressure when installing a new battery. This will prevent any damage to internal components or the key fob.