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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. Fortunately, this is very simple to do and will not cost you a lot. The key fob is powered by a standard CR2032 and can be replaced at the local BMW dealer online, or in a hardware shop. Replacement Battery A dead key fob can be more than an inconvenience. bmw replacement car keys can also be dangerous. You don't want to go up to your car, hit the unlocking button, and then find that there is no response. This is usually a sign that your BMW key fob battery has failed. Luckily, this is easy to fix at home with the replacement battery. The first step is to identify which kind of battery the BMW key fob requires or an CR2450 (Smart Key) or a C2032 (Comfort Slant Keys with Access/sleek Shapes). These batteries can be purchased at hardware and auto parts stores for less than $5 each. If you have the correct type of battery, all that is left to do is swap out the old battery for the new one. After you have installed a new battery, be sure to shut both halves of the key fob securely. Before starting, remove the metal key blade from your BMW key fob, and then make use of a valet key or small screwdrivers to open it up and reveal the tiny access port on the back of the fob. Then, you can take it off the back and replace the batteries that are dead. When removing the key fob, you must be careful not to damage the plastic. Wrapping a piece of tape around the tip of the tool will assist in preventing scratches. After you have replaced the battery, you are now able to reassemble your BMW key fob and test it. If your door locks and opens the car, then you have successfully changed the programming of your BMW key fob! If not, you may have to refer to your owner's manual or visit an expert to get assistance. Key Blade There are many locations to purchase replacement BMW keys regardless of whether you've lost the key fob or simply want to replace your battery. Some online stores offer free shipping and discounted rates, which makes them a good alternative for those who are budget-conscious. However, it's important to note that these prices may not include the cost of programming the new key into your car. Some BMW models include a “proximity-key” that allows you to start or unlock the car by pressing a button. Some models have a key made of metal in the remote which must be inserted into the ignition to start the engine. The procedure for replacing the key is identical for both kinds of BMW keys. If the battery in your BMW key fob is dead, you will not be able to unlock your car or use Comfort Access if it is equipped. It's simple to replace the battery using just a few steps. Ensure 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 inside the key fob come on but the engine remains off. Insert the new battery in the key fob, and then sync the key within 30 seconds of syncing the original key. Many of today's cars including BMWs come with Smart Keys that can unlock and start the vehicle without a traditional key. They are equipped with transponders that transmit a unique code to the immobilizer system of the car. This prevents unauthorized key-cloning or starting. They are more expensive than standard key fobs, due to the fact that they require a higher level of technology and programming. Some BMW models also have an exclusive feature known as Summon that lets you press a button on your key fob and get your car to take you away from the garage or parking lot. While this feature isn't available in all models, it's a powerful feature that can save you from having to summon a taxi, or fight off a thief while trying to return your car. Start/Stop Button The latest BMW key comes with an inbuilt push button that will start your vehicle for you. This feature is a great method to save time and not have to leave the car to use your keychain. The starter/stop button isn't easy to use on a BMW key fob replacement. The first step is to ensure that the key fob is properly paired with your car. This can be accomplished by following the steps outlined in this guide. Once you have the right key fob in hand, it is time to program it into your BMW. The procedure will differ slightly depending on the type of key you own. Certain modern models have keys with a display that can be programmed by following the directions in this guide. However older BMW models might require a visit to our dealer for the key fob to be programmed. Verify that the key blade on the new key fob is functioning. Check it by inserting the key fob into the keyhole pressing the lock/unlock button. If it works, the BMW iDrive system will ask you to put a name to the key. Then, you can press the Start/Stop button to activate your car. Next, you will need to set up an appointment with Patrick BMW to have the new key fob programmed. We will require a valid driver's license to verify your identity and a copy of the car's registration. This information will help us identify the correct code for the key fob. Based on the model, you will either have an ordinary key fob which requires no programming or an intelligent key fob with an embedded transponder which will require advanced technology to program. Once the key fob has been programmed, you can begin using it to commute every day on the Decatur roads. You can also contact us in the event that you have lost your keyfob. We will remove it within the system to prevent it from being in a position to unlock or start your car. This is a great option to stop theft if are worried that your keys might fall into the wrong hands. Programming If your replacement BMW key fob comes with an upgraded battery, but isn't functioning properly, you might have to reprogram it. The service team at our dealership in San Diego can help walk you through the steps for doing so. Start by inserting the working key into the ignition, changing it from position one, then 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. In 30 seconds, press the BMW logo three times. Finally press 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 the same as for other BMW models. It will take less than 30 seconds to complete. Once you've finished you are able to turn on your engine and use the new key to start your car. It is important to replace the BMW key battery regularly. You should do so once a year, or every other month depending on your lifestyle. It is cheap and easy to change the key battery. The BMW key battery is available in an standard size and can be found in most hardware stores or even in the parts department of local dealerships. Being the owner of a BMW car is a sign of status and it feels like you've arrived when you 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 a good idea know how to program a BMW key fob before you require it. Our service department at Princeton will show you how to reprogram your BMW X3. The first is when you already have a key that functions and want to add another alternative, and the other is the case if you're beginning from scratch and don't have a key.