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How to Replace a Dead BMW Key Fob Almost every BMW owner will have to replace their key fob's battery at some point. Fortunately, this is very simple to do and will not cost you a fortune. The key fob uses a standard CR2032 battery and can easily be repaired at a hardware store, online, or even the local BMW dealership. Replacement Battery A lost key fob could be more than an inconvenience; it could also be dangerous. The worst thing you could happen is to get in your vehicle, press the unlock button, and then you notice that nothing happens. This is typically an indication that your BMW key fob battery has died. This is a simple fix you can make at home with a brand new battery. First, you need to determine which type of battery is needed for your BMW key fob, which is the sleek slant or Comfort Access keys or a Smart Key CR2450. These batteries can be found in auto parts and hardware stores for less than $5 per. Once you have the right type of battery, all that's left to do is replace the old battery for the new one. Once you've inserted a new battery, be sure to shut each half of the key fob securely. Remove the metal blade from the BMW key fob. Use a valet or flat screwdriver to take it off and reveal the small port at the back. It is then possible to remove the back of the key fob to replace the dead battery. Be careful not to break the plastic surrounding the key fob while removing it. Wrapping tape around the edge of the tool will assist in preventing scratches. Once you have replaced the battery, you can reassemble your BMW key fob and test it. You have successfully reprogrammed your BMW key fob if the door locks and your vehicle starts. If you're unable to do that, you will need to consult the owner's manual of your vehicle or go to an BMW dealer for assistance. Key Blade If 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 free shipping and reduced prices, making them a great alternative for those who are budget-conscious. It is important to note that these prices do not include the cost of programming the new key into your vehicle. Certain BMW models are equipped with the “proximity key,” which allows you to start or unlock the car with the press of a button. Some models have a key made of metal in the remote which needs to be inserted into the ignition to start the engine. The process of replacing keys is nearly identical for both types of BMW keys. If the battery in your BMW key fob dies and you lose it, you won't be able unlock your vehicle or use Comfort Access if it is equipped. It's simple to replace the battery with just a few steps. Make sure that the doors and windows of your vehicle are closed. Then, locate the unlock and lock buttons on your working BMW key fob. Press and hold the unlock button until the electronics inside the key fob come on, but the engine remains off. Finally, insert the new battery into the key fob and sync it within 30 seconds of synchronizing your original key. A large number of cars today including BMWs come with Smart Keys that can unlock and start the vehicle without using a traditional key. These keys have a built-in transponder, which sends a distinct signal to the car's immobilizer, which stops unauthorized key-cloning and starting. These keys are more costly than standard key fobs because they require additional programming and a different technology. Certain BMW models also have an extra feature, called Summon that lets you press a button on the key fob and then get your car to come and pick you up from a parking lot or garage. This feature isn't available on all models, but it's a useful feature that will save you from needing a taxi to come and pick you up or fighting an obnoxious person to return it. Start/Stop Button The latest BMW key comes with an inbuilt push button that will turn on your car for you. This is a great method to save time and avoid having to get out of the car to use your keychain. The starter/stop button is not difficult to use on a BMW key fob replacement. The first step is to ensure that the key fob is properly connected to your vehicle. Follow the steps in this guide to do so. It is time to program the key fob into your BMW. The process for this will differ slightly depending on the kind of key you have. Some modern models come with a display key fob that can be programmed following the steps in this guide. Older BMW models might need to be brought to our dealer to be programmed with the key fob. Verify whether the key blade on the new key fob is operating. You can test this by inserting it in the keyhole and pressing the lock/unlock buttons. If it works, BMW iDrive will ask you to give the key an id. You can then press the start/stop button in order to activate your vehicle. Then, you'll need to schedule an appointment with Patrick BMW to program the new key fob. We will require a valid driver's license to confirm your identity, as well as a copy of the car's registration. This information will allow us to identify the code needed for your key fob. You'll either have a key fob standard that does not require programming, or a key fob smart equipped with a transponder that requires more advanced technology. Once the key fob has been programmed and you are capable of using it for your daily commute to Decatur. If you have lost your key fob you can contact our dealership for a repair which will disable the key fob within the system and stop it from being used to unlock or start your vehicle. This is a great method to stop theft if are worried that your keys will be stolen by someone else. Programming You may have to reset your replacement BMW keyfob if you have a newer battery but still doesn't work properly. The team of service at our dealership in San Diego can help walk you through the steps for doing so. Start by inserting your working key into the ignition. Turn it fast, five times, from position zero to one. 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. Finally release the unlock button, and you will be able to hear the doors locking automatically and unlock. The programming process for a replacement BMW keyfob is exactly same as the process for other BMW models. It should take less than 30 seconds to complete. Once you've finished you can begin to drive your vehicle with the new key. It is essential to replace the BMW key battery regularly. bmw replacement keys should replace the battery in your BMW key at least once a month and based on the way you live. It's inexpensive and easy to change the key battery. The BMW key battery is a standard size that you can locate it in a majority of hardware stores or even in the parts department at your local dealership. The ownership of a BMW vehicle is a symbol of status and it feels like you've arrived travel through the streets of Longmont in your BMW. BMW owners need to be aware that their expensive vehicle is susceptible to breakdowns like any other. It's best to learn how to program a BMW remote control before you actually need it. Our service department in Princeton will show you two methods to reprogram your BMW X3. One method is when you have a working key and would like to add more or change it, while the other is to start from scratch without a working key.