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How to Replace a Dead BMW Key Fob Almost every BMW owner will need to replace their key fob battery at some point in time. It's simple to do and won't cost you a lot. The key fob is powered by a standard CR2032 and can be easily replaced at a local BMW dealer or online, or at an hardware store. Replacement Battery A dead key fob can be not just a problem to deal with. It can also be dangerous. You don't want towards your car, press the unlocking button, and you find that there is no response. This usually means that the battery inside your BMW key fob has died. Luckily, this is easy to fix at home with the replacement battery. The first step is to identify which kind of battery you BMW key fob needs either an CR2450 (Smart Key) or a CR2032 (Comfort Access/sleek slant shaped keys). These batteries can be found at auto parts and hardware stores for under $5 each. If you have the correct type of battery, it is a simple matter of swapping out the old one with the new one. Be sure to close the two halves of the key fob securely once you have inserted the new battery. Before you begin to work, remove the key blade from the BMW key fob first, then use a valet key or small flat screwdriver to remove it and reveal the tiny access port at the back of the fob. It is then possible to remove the back of the key fob to replace the battery that has died. When removing the key fob, make sure you are cautious not to damage the plastic. Wrapping a small amount of tape over the top of your tool can protect against scratches. After replacing the battery, you are now able to rebuild your BMW key fob and test it. If your door locks and starts the car, you have successfully reset your BMW key fob! If not, you might require a look-up in the owner's manual or go to a dealer for assistance. Key Blade Whether you've lost the key fob you have or need to replace the battery, there are plenty of locations where you can purchase replacement BMW keys. Some online stores offer discounts and free shipping, making them an excellent choice for those who are on a tight budget. However, it's important to note that these prices do not include the cost of programming the new key into your car. Certain BMW models include a “proximity-key” that allows you to unlock or start the car by pressing a button. Certain BMW models come with a metal “proximity key” hidden in the remote control. It must be inserted into ignition to start the car. Both types of BMW keys are a bit different, but the procedure to replace them is almost identical. If the battery in your BMW key fob dies and you lose it, you won't be able to unlock your car, or use Comfort Access if it is equipped. Fortunately, it's possible to replace the battery with a couple of simple steps. Ensure that the windows and doors of your vehicle are shut. Locate the lock and unlock button on your BMW Key Fob. Press and hold the unlock button until the electronic on the key fob turn on, but the engine is off. Finally, put the new battery into the key fob and then sync it within 30 seconds of syncing your original key. Many of today's cars, including BMWs, are equipped with Smart Keys that can unlock and start the vehicle without using a traditional key. g28carkeys.co.uk are equipped with transponders, which transmit a unique code to the immobilizer system of the vehicle. This prevents unauthorized key-cloning or even starting. They are more expensive than standard key fobs, due to the fact that they require a higher level of technology and programming. Certain BMW models also have a special feature called Summon that allows you to press a button on the key fob to summon your car to come and pick you up from a parking lot or garage. While this feature isn't available in all models, it's a great feature that could save you from needing to summon a taxi, or fight off a thief while trying to get your car back. Start/Stop Button The brand new BMW key has a push button built in which will start your car for you. This feature can help you save time as it eliminates the need to remove your keychain from the car. However there is a some extra work in using the starter/stop button on an alternative BMW key fob. The first step is to ensure that the key fob is correctly paired to your vehicle. Follow the instructions in this guide to ensure that it is. Once you have the correct key fob in hand, it is time to program it to your BMW. The process for this will differ slightly depending on the type of key you own. This guide will explain how to program a display keyfob on some modern models. However older BMW models might require a visit to our dealership for the key fob to be programmed. The process begins by ensuring that the new key fob has a functioning key blade. Test it by inserting the key fob into the keyhole, and pressing the lock/unlock button. If it works then the BMW iDrive system will ask you to assign a name on the key. Then, press the start/stop button to start your vehicle. You'll then have to schedule an appointment with Patrick BMW to program the new key fob. We will need a valid driver's licence to confirm your identity, as well as an original copy of your car's registration. This information will allow us to identify the code needed for your key fob. You will either have a key fob standard that doesn't require programming or a key-fob smart with a transponder integrated that requires more advanced technology. Once the key fob has been programmed, you can begin to use it for your daily commute on the roads of Decatur. If you lose your key fob, you can contact our dealership for a service that will disable the key fob in the system and stop it from being used to unlock or start your vehicle. This is a great method to prevent theft if you are worried that your keys could get into the wrong hands. Programming You may need to re-programme your replacement BMW keyfob if you have a newer battery but still isn't working correctly. The service team at our dealership in San Diego can help walk you through the steps for doing so. Begin by inserting the working key into the ignition, moving it to position one and 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. Within 30 seconds, you should press the BMW logo three times. Release the unlock button to hear the doors lock, and unlock in a sequence. The programming process for the replacement BMW keyfob is the exact same as for other BMW models. It should take less than 30 second to complete. Once you have finished, you can start your car with the new key. It is important to replace the BMW key battery regularly. It is recommended to replace the battery in your BMW key every month, at a minimum according to how you live. Changing the key battery is easy and cheap. The BMW key battery is an standard size and is available at most hardware stores, or in the parts department of local dealerships. BMW automobiles are a status symbol. It makes you feel like you've arrived in Longmont when you drive your BMW. However, BMW owners need to know that their luxury vehicle is susceptible to breakdowns just like any other. It's best to learn how to program a BMW remote control prior to when you'll need it. Our service department in Princeton can show you two basic ways to reprogram your BMW X3. The first is if you already have a key working and want to add another alternative, and the other is if you are beginning from scratch and don't have any keys.