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How to Replace a Dead BMW Key Fob Almost every BMW owner will have to replace their key fob's battery at some point in time. This is a very simple task that won't cost a fortune. The key fob uses an ordinary CR2032 battery that can be repaired at a hardware store, online, or even a local BMW dealership. Replacement Battery A dead key fob can be more than a hassle to deal with. It could also be a risk. The worst thing you could happen is to get in your vehicle, press the unlock button only to notice that nothing happens. This is usually an indication that the battery inside your BMW key fob is dead. Fortunately, this is a simple issue to fix at home using the replacement battery. The first step is to determine the type of battery your BMW key fob needs either one of the C2450 (Smart Key) or a one of the 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 an easy task to swap out the old one with the new battery. Once you have inserted the new battery, make sure to seal both sides of the key fob securely. Remove more info made of metal from the BMW key fob. Utilize a valet, or a flat screwdriver to remove it and reveal the tiny port in the back. It is then possible to remove the back of the key fob to replace the dead battery. Be careful not to scratch the plastic surrounding the key fob while removing it. Wrapping tape around the edge of your tool will assist in preventing scratches. After replacing the battery, you should reassemble and test your BMW key fob. If your door locks and starts the car, then you have successfully changed the programming of your BMW key fob! If you are unable to do this then go through the owner's manual for your vehicle or go to an BMW dealer for assistance. Key Blade Whether you've lost the key fob you have or want to replace the battery, there are plenty of locations where you can purchase replacement BMW keys. Certain online retailers offer discounted rates and free shipping, making them an ideal choice for drivers who are budget-conscious. It is important to keep in mind that these prices don't include the cost of programming the new key into your vehicle. Certain BMW models are equipped with the “proximity key,” which allows you to start or unlock the car with the touch of a button. Others have a metal key hidden inside the remote, which needs to be put into the ignition to turn on the engine. The procedure for replacing the key is identical for both types of BMW keys. If your BMW's key fob battery is dead, you won't be capable of unlocking your vehicle or use Comfort Access, if equipped. It's simple to replace the battery using a few simple instructions. Make sure that the windows and doors of your vehicle are shut. Locate the lock and unlock button on your working BMW Key Fob. Press and hold the lock button until the electronics inside the key fob turn on however the engine remains off. Finally, insert the new battery into the key fob, and sync it within 30 seconds of synchronizing your original key. A large number of cars today, including BMWs, are equipped with Smart Keys that can unlock and start the vehicle without a traditional key. These keys come with a built-in transponder that transmits a unique signal to the car's immobilizer, which stops unauthorized key-cloning and starting. These keys are more expensive than standard key fobs, due to the fact that they require a higher level of technology and programming. Certain BMW models also come with a special feature called Summon that lets you press a button on the key fob and get your car to take you to an area of parking or garage. While this feature isn't available in all models, it's a great feature that could save you from having to call a taxi or fend off a creeper while trying to get your car back. Start/Stop Button A new BMW key has a built-in push button which can start your car automatically. This feature will help you save time as it eliminates the need to remove your keychain from the car. However, there is a bit of extra work involved when using the starter/stop button on a replacement BMW key fob. The first step is to make sure the key fob is paired with your car. Follow the instructions in this guide to ensure that it is. It is now time to set up the key fob into your BMW. The procedure for this will differ slightly depending on the type of key you have. Some modern models come with a display key fob that can be programmed by following the directions in this guide. Older BMW models might need to be brought to our dealer to get the key fob programmed. The process begins by checking that the new key fob is working key blade. You can test this by inserting it in the keyhole and pressing the lock/unlock buttons. If it works, the BMW iDrive system will ask you to assign a name to the key. You can then press the start/stop button to activate your vehicle. You will then need to make an appointment at Patrick BMW to program the new key fob. We will require an official driver's license to confirm your identity, as well as an official copy of your vehicle's registration. This information will help us determine which code is needed for the key fob. Depending on the model, you'll either have an ordinary key fob which does not require programming, or a smart key fob with an embedded transponder which will require advanced technology to program. Once the key fob is programmed, you can begin to use it to commute every day on the Decatur roads. You can also contact us if have lost the key fob. We will deactivate it in the system to prevent it from being in a position to unlock or start your car. If you are concerned that your keys might be stolen it is a good solution to stop theft. Programming If your replacement BMW key fob has a new battery but isn't functioning properly, you might have to reprogram it. Our service team in San Diego will guide you through the procedure. Start by inserting your working key into the ignition. Turn it five times quickly from position zero to position one. Then, take the key from the ignition and press the unlock button (the BMW logo) on the new key. Within 30 seconds, press the BMW logo three times. Release the unlock button and you will hear the doors lock, and unlock instantly. The programming process for the replacement BMW keyfob is the exact same as it is for other BMW models. It is expected to take less than 30 second to complete. 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. It is recommended to do this every year, or every other month depending on your lifestyle. Changing the key battery is simple and affordable. The BMW key battery is standard in size, and you can find it at most hardware stores or even in the parts department at the local dealership. BMW vehicles are a status symbol. It makes you feel like you have arrived in Longmont when you drive your BMW. BMW owners must be aware that their luxurious vehicle is susceptible to breakdowns like any other. It is a good idea to understand how to program a BMW key fob before you ever need it. Our service department in Princeton will show you two methods to reprogram your BMW X3. One method is for when you have a working key, but would like to add more and the second is to start from scratch without a functioning key.