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How to Replace a Dead BMW Key Fob Most BMW owners will need to change their key fob batteries at one time or another. This is a simple task that will not cost you a fortune. The key fob is powered by an ordinary CR2032 and can be easily replaced at the local BMW dealer or online, or at a hardware shop. Replacement Battery A dead key fob can be more than a pain to deal with, it could also be a risk. The worst thing you could happen is to go to your vehicle, push the unlock button, and then find that nothing happens. This is usually an indication that the battery inside your BMW key fob has gone out of service. Fortunately, it is simple to fix at home using an alternative battery. The first step is to determine which kind of battery your BMW key fob requires – either one of the one that is CR2450 (Smart Key) or a C2032 (Comfort Access/sleek slant shaped keys). These batteries are available in auto parts and hardware shops for less than $5 per. Once you have the right type of battery, it's simple to swap out the old battery with the new one. Be sure to close the two halves of your key fob securely after you have inserted the new battery. 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 lift it open and reveal the small access port in the back of the fob. It is then possible to remove the back of the key fob and replace the battery that is dead. Be careful not to break the plastic around the key fob when removing it. Wrapping a small piece of tape around the edge of your tool will help prevent any scratches. After replacing the battery you should reassemble and test your BMW key fob. You have successfully reprogrammed your BMW key fob if your door locks and your vehicle starts. If you're unable to do that then you must go through the owner's manual for your vehicle or go to a BMW dealer for help. Key Blade Whether you've lost your key fob or just need to replace the battery, there are several places you can buy replacement BMW keys. Some online stores offer discounts and free shipping, making them a great option for budget-conscious drivers. However, it is important to remember that these prices might not include the cost of programming the new key to your vehicle. Certain BMW models are equipped with a “proximity key,” which allows you to open or start the car with the press of one button. Some BMW models have a metal “proximity key” hidden in the remote control. It must be inserted into the ignition to start the car. Both types of BMW keys are a bit different, however the procedure to replace them is almost identical. If the battery in your BMW's key fob is dead, you won't be in a position to unlock your car or use Comfort Access, if equipped. genuine bmw replacement key to replace the battery by following just a few steps. Make sure that the windows and doors of your vehicle are closed. Locate the lock and unlock button on your working BMW Key Fob. Press and hold the unlock button until the electronics on the key fob turn on, but the engine is off. Finally, insert the new battery into the key fob, and sync it within 30 seconds of synchronizing your original key. Smart Keys are available in many cars today as well as BMWs. They can be used to unlock and start a car without the traditional key. They are equipped with a transponder, which sends a distinct signal to the car's immobilizer system, which blocks the unauthorized cloning of keys and starts. These keys are more expensive than standard key fobs as they require additional technology and programming. Certain BMW models also have an exclusive feature known as Summon, which allows you to press a button on your key fob and get your car to pick you up from the garage or parking lot. While this feature isn't available in all models, it's an impressive feature that can save you from having to call a taxi or fight off a thief while trying to return your car. Start/Stop Button The new BMW key has an integrated push button which will start your car for you. This feature will save you time as it eliminates the need to remove your keychain from your car. The starter/stop button is not simple to use on a BMW key fob replacement. The first step is to ensure that the key fob is properly paired with your vehicle. This can be accomplished by following the steps outlined in this guide. Once you have the right key fob in your possession It is now time to program it into your BMW. The process for this will differ slightly depending on the type of key you have. Certain modern models have keys with a display that can be programmed by following the steps in this guide. Older BMW models may require to be brought to our dealership to be programmed with the key fob. The process will begin by checking 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 it will be displayed on the BMW iDrive system will ask you to put a name on the key. Then, press the start/stop button to activate your vehicle. The next step is to set up an appointment with Patrick BMW to have the new key fob programmed. To confirm your identity, we will need to see an official driver's license and a copy the registration of your car. This will enable us to determine the key code required for your key fob. You will either have a standard key fob that doesn't require programming, or a key fob smart with a transponder built in that requires more advanced technology. Once the key fob has been programmed, you will be able to use it on your daily commute to Decatur. You can also contact us in the event that you have lost your key fob. We will remove it in the system to stop it from being in a position to unlock or start your vehicle. If you are concerned that your keys might fall into the wrong hand this is a great solution to stop theft. Programming You may need to reset your replacement BMW keyfob in case it has an updated battery, but doesn't work properly. Our service team in San Diego will guide you through the procedure. Begin by inserting the working key into the ignition and moving it to position one and back to position zero rapidly five times. Then, remove the key from the ignition and press the unlock button (the BMW Logo) on the new keys. Within 30 seconds press the BMW logo three times. Finally, release the unlock button, and you should hear the doors lock automatically and unlock. The process for programming a replacement BMW key fob is the same for other BMW models, and should be completed in less than 30 minutes. Once you've finished, you can turn on your engine and use the new key to start your car. It is essential to replace the BMW key battery on a regular basis. It is recommended to replace your BMW key battery every month, at a minimum according to how you live. The process of replacing the battery in your key is simple and affordable. The BMW key battery is standard in 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 like you have arrived in Longmont when you drive your BMW. However, BMW owners need to know that their luxury car can break down like any other. It is recommended to learn how to program a BMW remote control before you actually need it. Our service department in Princeton can show you two basic ways to reprogram your BMW X3. One method is if you have a working key but would like to add more, and the other is for starting from scratch with no working key.