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How to Replace a Dead BMW Key Fob Most BMW owner will need to replace their key fob battery at some point in time. This is a very simple task that won't cost you a fortune. The key fob runs on an ordinary CR2032 battery and can easily be replaced at a hardware store or online, or a local BMW dealership. Replacement Battery A lost key fob is more than a hassle to deal with; it could also be a risk. The last thing you want is to walk up to your vehicle, press the unlock button only to notice that nothing occurs. This is usually an indication that the battery inside your BMW key fob is dead. This is a straightforward fix you can perform at home using a new battery. The first step is to determine what kind of battery the BMW key fob requires – either one of the CR2450 (Smart Key) or a C2032 (Comfort Access/sleek slant shaped keys). These batteries can be found at auto parts and hardware stores for under $5 each. Once you have the right type of battery, it is an easy task to swap out the old one with the new one. Be sure to close the two halves of the key fob securely after you have inserted the new battery. Before starting to work, remove the key blade from the BMW key fob first, then utilize a valet key, or a small flat screwdriver to lift it open and reveal the tiny access port in the back of the fob. Then, you can remove the back of the key fob to replace the dead battery. Be careful not to break the plastic surrounding the key fob when removing it. Wrapping a small amount of tape over the end of your tool can protect against scratches. After replacing the battery, you must reassemble and test your BMW key fob. You have successfully reprogrammed your BMW key fob if the door locks and your vehicle starts. If you're unable to do so then you must check the owner's guidebook of your car or visit an BMW dealer for assistance. Key Blade Whether you've lost your key fob or just want to replace the battery, there are plenty of locations where you can purchase replacement BMW keys. Some online retailers offer free shipping and discounted rates, making them a good option for budget-conscious motorists. It is important to note that these prices don't include the cost to program the new key into your vehicle. Certain BMW models come with the “proximity-key” that allows you to unlock or start the vehicle by pressing a button. Some models have a key made of metal in the remote which needs to be put into the ignition to turn on the engine. Both kinds of BMW keys are a little different, however the procedure for replacing them is 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. It's easy to replace the battery with just a few steps. Make sure that the windows and doors of your vehicle are shut. Then, locate the unlock and lock buttons on your working BMW key fob. Press and hold the unlock button until the electronic 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 sync your original key. Smart Keys are available in many vehicles today, including BMWs. They can be used to unlock and start a car without the traditional key. These keys come with a built-in transponder that sends a unique signal to the vehicle's immobilizer system, which prevents unauthorised key-cloning and even starting. These keys are more expensive than standard key fobs as they require additional technology and programming. Some BMW models have a feature called Summon that lets you summon your vehicle from parking lots or garages by pressing a button on your key fob. Although this feature isn't offered in all models, it's an impressive feature that can save you from having to summon a taxi, or fight away a thief trying to get your car back. Start/Stop Button A brand new BMW key has an integrated push button that can start your car for you. This is a great option to save time and not have to get out of the car to use your keychain. The starter/stop button isn't difficult to use on the BMW key fob replacement. The first step is to make sure that the key fob is properly paired with your vehicle. This can be accomplished by following the steps in this guide. It is time to program the key fob to your BMW. The process for this will differ slightly depending on the type of key you have. This guide will show you how to program a display keyfob for some modern models. bmw car key may need to be brought to our dealer to get the key fob programmed. The process will begin by checking that the key fob has a working key blade. 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 a name. Then, press the start/stop button in order to activate your vehicle. Next, you will need to set up an appointment with Patrick BMW to have the new key fob programmed. We will need a valid driver's license to confirm your identity, as well as an original copy of your car's registration. This information will help us determine which code is needed for the key fob. Based on the model, you'll either have an ordinary key fob that requires no programming, or a smart key fob with a built-in transponder that will require more advanced technology to program. Once the key fob has been programmed, you are able to start using it for your daily commute on the Decatur roads. If you have lost your key fob you can contact our dealership for a service that will deactivate the key fob's function in the system, and stop it from being used to unlock or start your car. This is a great method to stop theft if are concerned that your keys will be stolen by someone else. Programming If the replacement BMW key fob comes with an upgraded battery, but isn't working as it should, you may require reprogramming it. The service staff at our dealership in San Diego can help walk you through the steps to do so. Start by inserting your working key into the ignition and turning it to position one and then back to zero quickly five times. Then, remove the key from the ignition and press the unlock button (the BMW logo) on the new key. In 30 seconds, you should press the BMW logo 3 times. Finally press the unlock button and you should hear the doors automatically lock and unlock. The process of programming a replacement BMW key fob is the same for other BMW models, and should be completed in less than 30 minutes. Once bmw keys have finished, you can start your car using the new key. It is important to replace the BMW key battery regularly. You should replace your BMW key battery at least once per month according to how you live. It's cheap and simple to replace the battery in your key. The BMW key battery is a standard size, and you can find it in most hardware stores or even in the parts department of the local dealership. BMW automobiles are considered to be a status symbol. It makes you feel like you've arrived in Longmont when you drive your BMW. However, BMW owners need to be aware that their expensive car can break down just like any other. It's a good idea learn how to program a BMW key fob prior to the time you'll require it. Our service department in Princeton will show you two ways to reprogram your BMW X3. The first is when you already have a key that functions and want to add another, and the second is the case if you're starting from scratch and do not have any keys.