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How to Replace a Dead BMW Key Fob The majority of BMW owners will need to change their key fob batteries at one time or another. Luckily, this is simple to do and will not cost you a fortune. The key fob runs on the standard CR2032 battery and can easily be replaced at a hardware store or online, or a local BMW dealership. Replacement Battery A dead key fob is not just a problem to deal with, it could also be a risk. The last thing you want is to walk up to your vehicle, push the unlock button and then notice that nothing occurs. This is usually a sign that the battery in your BMW key fob is dead. This is a simple fix you can perform at home using a new battery. The first step is to identify the type of battery your BMW key fob needs either a CR2450 (Smart Key) or a C2032 (Comfort Access/sleek slant-shaped keys). These batteries can be found in auto parts and hardware shops for less than $5 each. Once you have the right type of battery, all that's left to do is to replace the old battery with the new one. Once you've inserted the new battery, be sure to close both sides of the key fob securely. Before beginning taking the key blade from your BMW key fob and then utilize a valet key, or a small screwdrivers with a flat head to remove it and reveal the tiny access port on the back of the fob. Then, you can remove the back of the key fob to replace the battery that has died. Be careful not to break the plastic surrounding the key fob when you remove it. Wrapping tape around the tip of your tool will help to prevent scratches. After you have replaced the battery, you are now able to rebuild your BMW key fob and test it. It is now reprogrammed successfully. BMW key fob, if your door locks and your car starts. If not, you may need to consult the owner's manual or go to an authorized dealer to get assistance. Key Blade There are many places to buy replacement BMW keys regardless of whether you've lost the key fob, or just want to replace your battery. Some online stores offer discounted rates and free shipping, which makes them an ideal choice for those who are on a tight budget. It is important to keep in mind that these prices don't include the cost of programming the new key into your vehicle. bmw replacement key fob come with a “proximity-key” that allows the user to start or unlock the vehicle by pressing the button. Other models have a metal key that is hidden within the remote, which must be placed into the ignition in order to start the engine. Both types of BMW keys are a bit different, but the process for replacing them is identical. If the battery in your BMW key fob is dead and you lose it, you won't be able unlock your vehicle or use Comfort Access if it is equipped. Fortunately, you can replace the battery with a couple of easy steps. Ensure that the doors and windows of your vehicle are closed. Next, find the lock and unlock buttons on your functioning BMW key fob. Press and hold the lock button until you see the electronics inside the key fob turn on but the engine remains off. Finally, insert the new battery into the key fob, and sync it within 30 seconds of sync your original key. A large number of cars today such as BMWs, are equipped with Smart Keys that can unlock and start the car without a traditional key. They are equipped with a transponder, which sends a distinct signal to the car's immobilizer system, which blocks unauthorised key-cloning and even starting. They are more expensive than standard key fobs, due to the fact that they require a higher level of technology and programming. Some BMW models come with an option called Summon that allows you to summon your vehicle from parking spaces or garages by pressing the button on your key fob. Although this feature isn't available in all models, it's a powerful function that could help you avoid needing to summon a taxi, or fight off a creeper while trying to return your car. Start/Stop Button A new BMW key has a built-in push button that can start your car for you. This feature is a fantastic method to save time and avoid having to leave the car to use your keychain. However, there is a small amount of additional work when using the starter/stop button on an alternative BMW key fob. The first step is to ensure that the key fob is paired with your car. This can be accomplished by following the steps in this guide. Once you have the right key fob in your possession, it is time to program it into your BMW. The process for this will differ based on the type of key you own. This guide will teach you how to program a display keyfob for certain modern models. However older BMW models might require a visit to our dealership for the key fob to be programmed. The process will begin by checking that the new key fob is working key blade. Test it by putting the key fob into the keyhole, and pressing the lock/unlock button. If it works it will be displayed on the BMW iDrive system will ask you to assign a name on the key. Then, you can hit the Start/Stop button to activate your car. Then, you'll need to schedule an appointment with Patrick BMW to program the new key fob. We will require an official driver's license to verify your identity as well as an official copy of your vehicle's registration. This information will help us identify the correct code for the key fob. You will either have a key fob standard that does not require programming, or a key fob smart with a transponder integrated that requires more advanced technology. Once the key fob has been programmed, you are able to start using it to commute every day on the Decatur roads. You can also contact us if lose your keyfob. We will remove it in the system to stop it from being capable of unlocking or starting your car. This is a great option to prevent theft if you are worried that your keys could get into the wrong hands. Programming It is possible to reset your replacement BMW keyfob in case it has a newer battery but still isn't working correctly. The service staff at our dealership in San Diego can help walk you through the steps to do this. Start by inserting the working key into the ignition and moving it to position one and then back to zero quickly five times. Then, remove the key from the ignition and press the unlock button (the BMW Logo) on the new keys. After 30 seconds, press the BMW logo three times. Release the unlock button to hear the doors locking and unlock automatically. The procedure for programming a replacement BMW keyfob is exactly the same as for other BMW models. It is expected to take less than 30 second to complete. Once you've finished you can begin to drive your car using the new key. It is important to replace the BMW key battery on a regular basis. You should do it every year, or every two months based on your lifestyle. It is cheap and easy to change the key battery. The BMW key battery is a standard size and you can find it at most hardware stores or even in the parts department of your local dealership. BMW cars are a status symbol. It can make you feel as if you have arrived in Longmont when you drive your BMW. BMW owners must be aware that their luxury vehicle can break down like any other. It is recommended to learn how to program the BMW remote control before you need it. Our service department in Princeton can provide two ways to reprogram your BMW X3. The first method is when you already have a key that works and want to add another or the other the case if you're starting from scratch and do not have any keys.