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How to Replace a Dead BMW Key Fob The majority of BMW owners will require a change in their key fob batteries at some time. It's a simple task that won't cost you a lot. The key fob is powered by an ordinary CR2032 and can be easily replaced at a local BMW dealer, online or in the hardware store. Replacement Battery A dead key fob is more than a hassle to deal with, it could also be a risk. The worst thing you could happen is to walk up to your vehicle, press the unlock button, and then find that nothing occurs. This is usually an indication that the battery inside your BMW key fob has gone out of service. Luckily, this is easy to fix at home by using the replacement battery. The first step is to decide which type of battery is required for your BMW key fob – the sleek slant or Comfort Access keys or a Smart Key CR2450. These batteries can be purchased at hardware and auto parts stores for less than $5 each. Once you have the right type of battery, it is a simple matter of swapping out the old battery with the new battery. Once you've inserted a new battery, be sure to close each half of the key fob securely. Before beginning to work, remove the key blade from your BMW key fob, and then make use of a valet key or small screwdrivers with a flat head to open it up and reveal the small access port in the back of the fob. Then, you can take it off the back and replace the batteries that have died. When removing the key fob, make sure you are careful not to damage the plastic. Wrapping a piece of tape around the tip of the tool will help to prevent scratches. After replacing the battery, you should reassemble and test your BMW key fob. You have successfully reprogrammed the BMW key fob if your car locks your door and starts. If you are not able to do this, you will need to go through the owner's manual for your vehicle or go to the BMW dealer for assistance. Key Blade If you've lost your key fob or need to replace the battery, there are plenty of places you can buy replacement BMW keys. Some online retailers offer discounts and free shipping, making them an excellent choice for those who are on a tight budget. However, it is important to keep in mind that these prices might not include the cost of programming the new key to your vehicle. Certain BMW models come with a “proximity key,” which allows you to open or start the car at the push of one button. Others have a metal key in the remote that needs to be put into the ignition to start the engine. The replacement process is almost identical for both kinds of BMW keys. When your BMW's key fob battery dies, you won't be capable of unlocking your vehicle or use Comfort Access, if equipped. Fortunately, you can replace the battery in just a few easy steps. First, ensure that the doors and windows are closed. Next, find the unlock and lock buttons on your working BMW key fob. Press and hold the unlock button until the electronic in the key fob come on but the engine remains off. Then, you can insert the new battery into the key fob and then sync it within 30 seconds of synchronizing your original key. Smart Keys are available in numerous cars, including BMWs. They can be used to unlock and start a vehicle without the traditional key. These keys are equipped with transponders that transmit a unique code to the immobilizer system in the car. This stops unauthorized key cloning or starting. These keys are more expensive than standard key fobs because they require additional programming and a different technology. Some BMW models come with the feature of Summon which allows you to summon your car from parking spaces or garages by pressing an icon on your key fob. This feature isn't offered on all models, however it's a useful feature that can save you from needing a taxi to come to pick up your car, or fighting an obnoxious person to return it. Start/Stop Button A new BMW key comes with a built-in push button that can start your car for you. This feature will save you time as it eliminates the need to remove your keychain from your car. However there is a little small amount of additional work when using the starter/stop button on the replacement BMW key fob. The first step is to make sure that the key fob is properly connected to your vehicle. This can be accomplished by following the steps laid out in this guide. It is time to program the key fob into your BMW. The process may differ depending on the type of key you own. Some modern models come with keys with a display that can be programmed by following the steps in this guide. Older BMW models may need to be brought to our dealership to have the key fob programmed. Verify that the key blade on the new key fob is operating. Test it by putting the key fob into the keyhole and pressing the lock/unlock button. If it works, the BMW iDrive system will ask you to add a name to the key. Then, press the start/stop button to start your vehicle. The next step is to schedule an appointment with Patrick BMW to have the new key fob programmed. We will require an official driver's license to verify your identity as well as a copy of the car's registration. This will enable us to determine the code required for your key fob. You'll either have a key fob standard that does not require programming or a key fob smart with a transponder integrated that requires more advanced technology. Once the key fob has been programmed, you can begin using it for your daily commute on the roads of Decatur. You can also contact us in the event that you lose your key fob. We will disable it within the system to stop it from being in a position to unlock or start your car. If you're worried that your keys could get lost to the wrong person this is a great option to protect yourself from theft. Programming If your replacement BMW key fob has a new battery but isn't working as it should, you may require reprogramming it. Our service team in San Diego will guide you through the procedure. Start by inserting your working key into the ignition, turning it to position one and then back to zero quickly five times. 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. Finally, release the unlock button and you should be able to hear the doors locking automatically and unlock. The procedure for programming a replacement BMW keyfob is exactly the same as the process for other BMW models. key fob replacement bmw should take less than 30 seconds to complete. After you've completed the process you are able to start your car with the new key. It's important to replace your BMW key battery on a regular basis. You should replace the battery in your BMW key at least once a month and based on the way you live. Change the battery of your key is easy and cheap. The BMW key battery is of standard size and you can find it at most hardware stores, or in the parts department at the local dealership. BMW cars are a status symbol. It can make you feel like you've arrived in Longmont when you drive your BMW. BMW owners should be aware that their luxurious vehicle can break down like any other. It's best to learn how to program the BMW remote control before you need it. Our service department in Princeton will show you two methods to reprogram your BMW X3. The first method 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 any keys.