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How to Replace a Dead BMW Key Fob Most BMW owner will have to replace their key fob battery at some point. Luckily, this is simple to do and won't cost you a fortune. The key fob is powered by an ordinary CR2032 battery that can be repaired at a hardware store online, or a local BMW dealership. Replacement Battery A dead key fob can be more than an inconvenience. It can also be dangerous. You don't want into your vehicle, press the unlock button, only to then discover that there is no response. This is typically an indication that your BMW key fob battery is dead. It is a simple fix you can make at home with a brand new battery. The first step is to identify what kind of battery your BMW key fob requires – either a one that is CR2450 (Smart Key) or a CR2032 (Comfort Slant Keys with Access/sleek Shapes). These batteries are available in auto parts and hardware shops for less than $5 each. Once you have the right type of battery, it's simple to swap out the old battery with the new one. Be Info to close the two halves of the key fob securely after you have inserted the new battery. Before beginning taking the 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 small access port on the back of the fob. After that, you can remove it off the back and replace the dead batteries. Be careful not to scratch the plastic around the key fob while removing it. Wrapping tape around the tip of your tool can assist in preventing scratches. Once you have replaced the battery, you can now reassemble your BMW key fob and test it. You have successfully reprogrammed the BMW key fob if your door locks and your vehicle starts. If you are unable to do that then you must go through the owner's manual for your car or visit the BMW dealer for assistance. Key Blade Whether you've lost your key fob or need to replace the battery, there are a variety of locations where you can purchase replacement BMW keys. Some online retailers offer free shipping and reduced rates, making them a good option for budget-conscious motorists. It's important to remember that these prices do not include the cost to program the new key into your vehicle. Some BMW models include a “proximity-key” that allows the user to start or unlock the vehicle by pressing the button. Certain BMW models include a metal “proximity key” concealed in the remote control that must be inserted into the ignition to start the car. Both kinds of BMW keys are a bit different, but the procedure to replace them is almost identical. When the key fob battery of your BMW is dead, you won't be in a position to unlock your car or use Comfort Access, if equipped. Fortunately, you can replace the battery in just a few simple steps. First, make sure that your vehicle's windows and doors are closed. Next, find the lock and unlock buttons on your functioning BMW key fob. Press and hold the lock button until you see the electronics inside the key fob turn on however the engine remains off. Finally, put the new battery into the key fob and sync it within 30 seconds of sync your original key. A large number of cars today such as BMWs, are equipped with Smart Keys that can unlock and start the car without a traditional key. These keys have a built-in transponder that transmits a unique signal to the vehicle's immobilizer system, which prevents the unauthorized cloning of keys and starts. These keys are more expensive than standard key fobs as they require additional technology and programming. Certain BMW models also come with a special feature called Summon, which lets you press a button on your key fob to summon your car to take you away from the garage or parking lot. While this feature isn't available in all models, it's a great feature that could help you avoid having to summon a taxi, or fight off a creeper while trying to get your car back. Start/Stop Button The latest BMW key has an inbuilt push button that will start your vehicle for you. This feature is a great option to save time and not have to leave the car to access your keychain. However there is a little some extra work in using the stop/start button on a replacement BMW key fob. The first step is to make sure that the key fob is properly paired with your vehicle. This can be done by following the steps outlined in this guide. Once you have the correct key fob It is now time to program it to your BMW. The procedure will differ slightly according to the type of key you own. Some modern models come with an electronic key fob that can be programmed following the instructions in this guide. Older BMW models may require to be brought to our dealer to get the key fob programmed. The process begins by ensuring that the new key fob has a working key blade. You can test this by inserting it in the keyhole and pressing the lock and unlock buttons. If it works, BMW iDrive will ask you to give the key the name. You can then press the start/stop button to start your vehicle. Next, you will need to schedule an appointment with Patrick BMW to have the new key fob programmed. To confirm your identity, we will need to see an official driver's license and a copy the registration of your car. This information will allow us to identify the code required for your key fob. Based on the model, you'll either have a standard key fob that requires no programming or a smart key fob with an integrated transponder that requires advanced technology to program. Once the key fob has been programmed, you can then start using it to commute every day on the roads of Decatur. If you have lost your key fob you can also contact our dealer for a service that will disable the key fob in the system and prevent it from being used to unlock or start your car. If you're worried that your keys may get lost to the wrong person it is a good option to protect yourself from theft. Programming You may have to reprogramme your replacement BMW keyfob if you have an upgraded battery, but doesn't work correctly. The team of service at our dealership in San Diego can help walk you through the steps for doing this. Begin by inserting the working key into the ignition, moving it to position one and 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. After 30 seconds, you will need to press the BMW logo three times. Finally press the unlock button and you will hear the doors automatically lock and unlock. The process of programming the replacement BMW key fob is the same for other BMW models, and can be completed in less than 30 minutes. Once you've finished you can begin to drive your vehicle with the new key. It is essential to replace the BMW key battery on a regular basis. You should do it every year, or every two months based on your lifestyle. It's inexpensive and easy to replace the battery in your key. The BMW key battery comes in the standard size and is available at most hardware stores, or in the parts department at local dealerships. Owning a BMW vehicle is a sign of status, and it can feel like you've arrived travel through the streets of Longmont in your BMW. However, BMW owners need to be aware that their expensive vehicle is susceptible to breakdowns as any other. It is a good idea to know how to program your BMW key fob prior to the time you'll require it. Our service department at Princeton can show you how to reprogram your BMW X3. One method is for when you have a working key and want to add more and the second is for starting from scratch without a working key.