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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. Luckily, this is easy to do and won't cost you a fortune. The key fob uses the standard CR2032 battery that can be repaired at a hardware store online, or an actual BMW dealership. Replacement Battery A dead key fob can be more than a nuisance; it could also be dangerous. You don't want to go up to your vehicle, press the unlock button, only to then find that nothing happens. This is typically an indication that your BMW key fob battery is dead. It is a simple fix you can perform at home by replacing the battery. The first step is to identify the type of battery that is required for your BMW key fob, which is an elegant slant-sleek shape with a Comfort Access keys or a Smart Key CR2450. These batteries can be purchased at auto parts and hardware stores for less than $5 each. If you have the correct type of battery, it's a simple matter of swapping out the old battery with the new battery. Be sure to close the two halves of your key fob securely after inserting the new battery. Before beginning to work, remove the key blade from your BMW key fob and then make use of a valet key or small flat screwdriver to open it up and reveal the small access port in the back of the fob. Then, you can pop off the back and replace the batteries that have died. When removing the key fob, make sure you are careful not to scratch the plastic. Wrapping a piece of tape around the end of your tool will help to prevent scratches. After replacing the battery you should reassemble and test your BMW key fob. You have successfully reprogrammed your BMW key fob if the car locks your door and starts. If you are unable to do that, you will need to consult the owner's manual of your vehicle or go to the BMW dealer for assistance. Key Blade If you've lost your key fob or need to replace the battery, there are plenty of locations where you can purchase replacement BMW keys. Some online retailers offer discounts and free shipping, which makes them an excellent choice for budget-conscious drivers. It is important to note that these prices don't include the cost of programming the new key into your vehicle. Certain BMW models include a “proximity-key” that allows the user to start or unlock the vehicle by pressing the button. Some models have a key made of metal that is hidden within the remote, which needs to be put into the ignition to start the engine. Both types of BMW keys are a bit different, however the procedure for replacing them is nearly identical. When the key fob battery of your BMW fails, you won't able to unlock your vehicle or use Comfort Access, if equipped. It's easy to replace the battery with just a few steps. First, make sure that the windows and doors are closed. Find the lock and unlock button 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. Install the new battery inside the key fob and sync the key within 30 seconds after sync with the original key. A lot of modern cars such as BMWs, are equipped with Smart Keys that can unlock and start the car without a traditional key. These keys come with a built-in transponder that transmits a unique signal to the vehicle's immobilizer, which stops unauthorised key-cloning and even starting. They are more expensive than standard key fobs because they require additional programming and advanced technology. Some BMW models come with the feature of Summon that allows you to summon your vehicle from a garage or parking lot by pressing an icon on your key fob. The feature is not offered on all models, however it is a great function that can help you avoid needing a taxi to come and pick you up or fighting off a creeper to return it. Start/Stop Button A new BMW key comes with a built-in push button that can start your car automatically. This is a great option to save time and not have to get out of the car to access your keychain. The stop/start button isn't simple to use on a BMW key fob replacement. The first step is to verify that the key fob is correctly paired to your vehicle. This can be accomplished by following the steps in this guide. It is time to program the key fob for your BMW. The procedure to do this will differ based on the type of key you have. This guide will show you how to program a display keyfob for certain models of the present. However, older BMW models might require a visit to our dealership to get the key fob to be programmed. Verify that the key blade on the new key fob is functioning. You can test this by placing it into the keyhole and pressing the lock/unlock buttons. If it works then the BMW iDrive system will ask you to put a name to the key. After that, press the Start/Stop button in order to activate your car. You'll then have to schedule an appointment with Patrick BMW to program the new key fob. To confirm your identity, we will require an official driver's license and an original registration document for your car. This will enable us to determine the code needed for your key fob. Based on the model, you'll either have an ordinary key fob that does not require programming, or a smart key fob that has a built-in transponder that requires more advanced technology to program. Once the key fob has been programmed, you can begin using it to commute every day along the Decatur roads. You can also contact us in the event that you have lost the key fob. We will disable it in the system to prevent it from being in a position to unlock or start your vehicle. If you're worried that your keys may fall into the wrong hand it is a good solution to stop theft. bmw spare keys may need to re-programme your replacement BMW keyfob in case it has 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 this. Start by inserting your working key into the ignition, turning it to position one, then back to position zero in a rapid manner five times. Then, remove the key out of the ignition and press the unlock button (the BMW logo) on the new key. In 30 seconds, press the BMW logo three times. Then, release the unlock button, and you will be able to hear the doors locking automatically and unlock. The process of programming a replacement BMW key fob is similar to that for other BMW models, and can be completed in less than 30 minutes. Once you've finished you can start your engine and use the new key to start your car. It is essential to replace the BMW key battery on a regular basis. You should do so once a year, or every two months based on your lifestyle. Changing the key battery is easy and cheap. The BMW key battery is a standard size and can be found in most hardware stores or in the parts department of local dealerships. Being the owner of a BMW vehicle is a sign of status, and it can feel like you've arrived drive down the streets of Longmont in your BMW. However, BMW owners need to be aware that their luxurious car can break down just like any other. It's a good idea understand how to program the BMW key fob before you ever require it. Our service department at Princeton can show you how to reprogram your BMW X3. One method is if you have a working key and want to add more or change it, while the other is to start from scratch without a working key.