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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. This is a simple task that will not cost you a lot. The key fob is powered by an ordinary CR2032 battery that can be replaced at a hardware store online, or an actual BMW dealership. Replacement Battery A dead key fob can be more than an inconvenience. It could also be dangerous. You don't want to walk up to your car, press the unlock button, and then find that nothing happens. This is typically an indication that your BMW key fob battery has failed. Fortunately, this is a simple issue to fix at home using an alternative battery. First, you must determine which type of battery is required for your BMW key fob – an elegant slant-sleek shape with a Comfort Access keys or a Smart Key CR2450. These batteries can be purchased in auto parts and hardware stores for less than $5 each. Once you have the correct type of battery, all that's left to do is replace the old battery with the new one. Once you have inserted the new battery, be sure to seal both halves of the key fob securely. Remove the blade of metal from the BMW key fob. Use a valet or flat screwdriver to remove it and reveal the small port at the back. It is then possible to 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 a small piece tape over the top of your tool can aid in preventing scratches. Once you have replaced the battery, you can reassemble your BMW key fob and test it. If your door locks and you can start the car, you've successfully changed the programming of your BMW key fob! If you are not able to do so then check the owner's guidebook of your car or visit the BMW dealer for assistance. Key Blade There are a variety of places to buy replacement BMW keys, whether you've lost the key fob or simply need to replace your battery. Certain online retailers offer discounts and free shipping, which makes them an excellent choice for those who are on a tight budget. It's important to remember that these prices don't include the cost of programming the new key into your vehicle. Certain BMW models come with the “proximity key,” which allows you to start or unlock the car with the touch of the button. Some models have a key made of metal hidden inside the remote, that needs to be inserted into the ignition to start the engine. Both kinds of BMW keys are slightly different, however the procedure for replacing them is nearly identical. When the key fob battery of your BMW fails, you won't capable of unlocking your vehicle or use Comfort Access, if equipped. It's simple to replace the battery using a few simple instructions. First, make sure that your vehicle's windows and doors are closed. Find the lock and unlock button on your BMW Key Fob. Press and hold the lock button until you see the electronic components inside the key fob switch on but the engine remains off. Then, you can insert the new battery into the key fob, and sync it within 30 seconds of syncing your original key. A lot of modern cars, including BMWs come with Smart Keys that can unlock and start the vehicle without using a traditional key. They are equipped with transponders, which transmit an individual code to the immobilizer system of the car. This blocks unauthorized key-cloning or starting. These keys are more costly than standard keys because they require additional programming and technology. Some BMW models also come with an extra feature, called Summon that allows you to hit a button on the key fob and get your car to come and take you to an area of parking or garage. This feature isn't available on all models, but it's a useful feature that can save you from having a taxi arrive and get your car or fighting off a creeper to get it back. Start/Stop Button A new BMW key comes with an integrated push button that can start your car for you. This feature can help you save time by not having to remove your keychain from the car. The starter/stop button isn't simple to use on a BMW key fob replacement. The first step is to verify that the key fob is properly paired with your vehicle. This can be accomplished by following the steps laid out in this guide. Once you have the correct key fob It is now time to program it to your BMW. The process will vary slightly depending on the type of key you own. Some modern models come with keys with a display which can be programmed following the instructions in this guide. However older BMW models might require a visit our dealer for the key fob to be programmed. Make sure whether the key blade on the new key fob is working. Test it by putting the key fob into the keyhole, and pressing the lock/unlock buttons. If it works, BMW iDrive will ask you to give the key an id. Then, press the start/stop button in order to activate your vehicle. You will then need to schedule an appointment with Patrick BMW to program the new key fob. To confirm your identity, we will need to see an official driver's license and a copy the registration of your car. This will allow us to identify the code required for your key fob. You'll either have a key fob standard that doesn't 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 dealer for a service that will deactivate 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 concerned that your keys might fall into the wrong hands. Programming If your replacement BMW key fob has a new battery but isn't working properly, you may have to reprogram it. Our service team in San Diego will guide you through the procedure. Begin by inserting the working key into the ignition, turning it to position one and then back to position zero in a rapid manner 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 can press the BMW logo three times. Release the unlock button to hear the doors lock, and unlock instantly. The procedure for programming the replacement BMW keyfob is exactly the same as for other BMW models. It is expected to take less than 30 seconds to complete. After you've completed the process you can start your engine and use the new key to start your car. It is essential to replace your BMW key battery regularly. It is recommended to do this once a year, or every two months based on your lifestyle. It's cheap and simple to change the key battery. The BMW key battery is standard in size that you can locate it in a majority of hardware stores or even in the parts department of the local dealership. BMW cars are considered to be a status symbol. It makes you feel like you have arrived in Longmont when you drive your BMW. car keys bmw need to be aware that their expensive vehicle can break down like any other. It is best to know how to program a BMW remote control before you actually need it. Our service department in Princeton can show you two ways to reprogram your BMW X3. The first method is when you already have a key working and want to add another alternative, and the other is when you are starting from scratch and do not have a key.