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How to Replace a Dead BMW Key Fob The majority of BMW owners will need to change their key fob batteries at some point. This is a very easy task that doesn't cost a fortune. 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; it could be a risk. The worst thing you could happen is to get in your vehicle, push the unlock button and then you notice that nothing happens. This is usually a sign that your BMW key fob battery has died. This is a straightforward fix you can make at home by replacing the battery. The first step is to identify the type of battery your BMW key fob needs or one of the one that is CR2450 (Smart Key) or a CR2032 (Comfort Access/sleek slant shaped keys). These batteries can be found in hardware and auto parts shops for less than $5 per. Once you have the right type of battery, all that is left to do is swap out the old battery for the new one. Once you have inserted a new battery, be sure to close both halves of the key fob securely. Remove the blade made of metal from the BMW key fob. Utilize a valet, or a flat screwdriver to remove it and reveal the small port at the back. Then, you can remove the back of the key fob and replace the battery that has died. Be careful not to scratch the plastic around the key fob while removing it. Wrapping a small piece of tape over the end of your tool will aid in preventing scratches. After replacing the battery, you can rebuild your BMW key fob and test it. You have successfully reprogrammed the BMW key fob, if your door locks and your car starts. If not, you might have to refer to your owner's manual or visit an expert for assistance. Key Blade There are many locations to purchase replacement BMW keys, whether you've lost the key fob or simply want to replace your battery. Some online retailers offer discounts and free shipping, which makes 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. Some BMW models come with a “proximity-key” that allows the user to start or unlock the vehicle by pressing a button. Certain BMW models come with a metal “proximity key” hidden in the remote control, which must be inserted into the ignition to start the car. The procedure for replacing the key is identical for both kinds of BMW keys. If the battery inside your BMW key fob dies and you lose it, you won't be able to unlock your car or use Comfort Access if it is equipped. Fortunately, it's possible to replace the battery in just a few easy steps. First, ensure that the doors and windows are shut. Then, locate the lock and unlock buttons on your working BMW key fob. Press and hold the unlock button until the electronics on the key fob turn on, but the engine is off. Insert the new battery in the key fob and sync the key within 30 seconds after syncing the original key. Smart Keys are available in many vehicles today and include BMWs. They can be used to unlock and start a vehicle without the traditional key. These keys have transponders that transmit a unique code to the immobilizer system of the car. This stops unauthorized key cloning or starting. They are more expensive than standard key fobs because they require additional programming and a different technology. Some BMW models have a feature called Summon which allows you to summon your vehicle from parking spaces or garages by pressing the button on your key fob. Although this feature isn't offered in all models, it's a powerful feature that could save you from needing to call a taxi or fight away a thief trying to return your car. Start/Stop Button A brand new BMW key comes with a built-in push button which can start your car automatically. This feature could save you time by not having to remove your keychain from your car. The starter/stop button isn't simple to use on a BMW key fob replacement. The first step is to make sure the key fob is paired with your car. Follow the instructions in this guide to do so. Once you have the right key fob in your possession then it's time to program it into your BMW. The process may differ depending on the kind of key you have. bmw key fob replacement cost will explain how to program a display keyfob for some modern models. Older BMW models might need to be brought to our dealership to be programmed with the key fob. Check whether the key blade on the new key fob is operating. Test it by inserting the key fob into the keyhole and pressing the lock/unlock button. If it works then the BMW iDrive system will ask you to add a name on the key. Then, press the start/stop button to start your vehicle. You'll then have to make an appointment at Patrick BMW to program the new key fob. We will require an official driver's license to verify your identity and an official copy of your vehicle's registration. This information will allow us to identify the correct code for the key fob. You will either have a standard key fob that does not require programming, or a key fob smart equipped with a transponder that requires more advanced technology. Once the key fob has been programmed to your preferences, you'll be in a position to use it on your daily commute to Decatur. You can also contact us if you have lost your keyfob. We will deactivate it in the system to prevent it from being in a position to unlock or start your car. If you're worried that your keys might fall into the wrong hand, this is a great option to protect yourself from theft. Programming It is possible to reset your replacement BMW keyfob in case it has an upgraded battery, but isn't working properly. Our service team in San Diego will guide you through the process. Begin by inserting the working key into the ignition. Turn it quickly five times from zero to one. Then, remove the key from the ignition and hold down the unlock button (the BMW logo) on the new key. Within 30 seconds, press the BMW logo three times. Then press the unlock button and you will hear the doors lock automatically and unlock. The process for programming a replacement BMW key fob is the same as for other BMW models, and should be completed in less than 30 minutes. After you've completed the process you are able to start your car using the new key. It is essential to replace the BMW key battery on a regular basis. You should do so every year or every other month depending on your lifestyle. It's cheap and simple to change the key battery. The BMW key battery is the standard size and can be found at most hardware stores, or even in the parts department of local dealerships. BMW cars are considered to be a status symbol. It can make you feel like you have arrived in Longmont when you drive your BMW. BMW owners must be aware that their expensive vehicle is prone to breakdown just like any other. It's a good idea know how to program a BMW key fob prior to the time you'll need it. Our service department at Princeton will show you how to reprogram your BMW X3. The first method is when you already have a key working and want to add another alternative, and the other is if you are starting from scratch and don't have a key.