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How to Replace a BMW Key The cost of replacing a BMW key could be expensive. This is because BMW keys are highly-technical and require reprogramming to work with your car. Purchasing a new BMW key online can save you money, however it is crucial to find a seller that specializes in keys for cars and has excellent reviews. It is also recommended to visit the dealership to ensure that your new key is properly programmed. Smart Keys Keys A lot of new BMW models are equipped with a smart-key system that lets you lock and unlock your car by simply turning the steering wheel. Some models also come with a system that lets you start the engine from a distance and also remotely shut the windows and open the sunroof. These advanced keys use radio for locking / unlocking as well as infrared (IR) to communicate with the dashboard. The IR circuit is an infrared link with two ways that transmits commands from the dashboard, in addition to the receptacle in the key. This lets the key control the car from just a few meters away. The key also comes with an RF coil that detects the remote lock signal of the car and transmits it to the dashboard. These smart keys can also be used to save information such as power seat and mirror settings. To give access to someone else, you simply need to pair the key to an iPhone and then follow the directions on your device. This will enable you to share an electronic key that can be used for as long as your phone is powered up and within Bluetooth range. Unlike older car key fobs that transmit the same frequency repeatedly (which could affect other models and makes using the same system, not to mention makes it easier for tech-savvy thieves to take cars) Modern smart keys broadcast a different encrypted signal every time they're used to open or close a door or pop the trunk. The car's antennas respond by emitting a specific frequency in order to recognize the key and allow it to unlock or open it. Hacking is possible, but it isn't impossible. An experienced professional can be able to intercept IR transmissions and gain access to your car. To safeguard how much is a replacement bmw key uk , keep a backup key or make sure to leave the smart key at home whenever you go out to eat or shopping. If you lose your keys, make sure to keep your VIN number and government ID in case you require an replacement. Key Fob Batteries The BMW key fob provides security and convenience with the push of a single button. But, as with everything that is dependent on a battery, the key fob's battery is prone to dying at the worst possible moment. It's easy to replace BMW key fob's battery. Open the fob at the seam that joins the two halves. The backplate of the fob is held in place with a notch which can be opened using the flat-bladed screwdriver or finger. Once the backplate is removed, place a brand new button cell battery into its place. The new battery is usually designed to look like a small coin, with plus and minus symbols printed on it. Insert the new battery in the same direction as the old one, then snap the fob's two halves back together. After replacing the battery After replacing the battery, test it by pressing each of the fob's buttons to ensure they function as you expect. Based on the model, you may have to re-sync your key fob to your vehicle or take other steps to make sure it is working correctly. Refer to the owner's guide of your BMW for more detailed instructions on how to sync the key fob. A dead or weak battery on your key fob could limit the range at which it communicates with your car, limiting the capability to lock or unlock the trunk or doors, or arm/disarm your alarm system. It is time to replace the battery if you notice that you need to be closer to your vehicle to unlock the doors or start the engine. Change the battery of the key fob is a straightforward task that can be done at home. After replacing the battery it is crucial to verify the function of the key fob by locking and unlocking the vehicle or putting it in the ignition. Reassemble the keyfob, and test it again to make sure that it's functioning properly. Knowing what happens when the batteries on the key fob need to be replaced and how to replace them, and how to start a vehicle with a dead battery will allow you to take advantage of all of BMW's convenient features. Slant Shaped Key Batteries BMW owners will likely make good use of the keyless entry system as well as ignition. These features can make driving your BMW easier and even help you to avoid some common car problems. If you aren't paying attention to the indicators that your BMW keyfob battery is running low, it may be out of charge. If your BMW key fob is damaged, it's no longer able to communicate with the vehicle's computer to unlock or start the engine. The batteries that are found in many BMW keys can be easily replaced. The process is simple and usually takes just a few minutes to complete. If you have an extra BMW key, it's a good idea to keep it in your pocket to ensure that you can replace the battery as soon as it runs out of power. The most important thing to keep in mind when changing the BMW key fob battery is to use the correct replacement battery. A smart key will require an CR2450 battery. Likewise, the Comfort Access and sleek slant-shaped fobs utilized in a number of F-series models from 2011 until 2017 will require the CR2032 battery. Both are available in most auto shops and department stores for fairly cheap prices. Another option is to purchase an alternative key for your BMW from an authorized locksmith or dealer. These keys are laser cut and digitized by vehicle manufacturers to ensure compatibility with keyless entry and start systems. These keys are more expensive and take longer to arrive than aftermarket versions. BimmerTech provides a simple online ordering system for BMW replacement keys. This will help you save time and money. The most popular method to start your BMW is to use the traditional key however, some drivers prefer using their smartphones as a “surrogate” key. Your smartphone can connect with the keyless start and entry system via Bluetooth technology. This is especially helpful during hot weather, when you don't wish to carry around a heavy BMW Key in your pocket. Valet Key Batteries A key fob is a extremely useful tool but at times, you may run out of battery power. This could make it difficult to lock your car and it could also prevent you from turning on the engine and drive. It is easy to replace the battery in the case of a BMW keyfob. The steps vary a little depending on what type of key you have however they're fairly similar. It is easy to replace the more modern key batteries with a slant-shaped design by following a an easy process. Press the small tab to let the valet key go. It is located on the bottom or side of the fob. Then, you can use a flat screwdriver to take out the access port that is hiding the battery. After the old battery has been removed, you can install a new one and then put everything back together. It isn't easy to replace a battery in an older diamond-shaped key with a rechargeable one. These keys are not designed to be replaced with batteries, and could be damaged if you try to pry the backplate off. You can force it open, but you'll probably need the help of a professional. If you are looking to replace a battery that is old, it is recommended that you contact a dealership to get it done properly. BMW keys are available in a variety of different styles. Each key fob comes with a driver profile, and you can connect them to various drivers in the vehicle. This allows family members to share the same vehicle, and still be able to customize their driving experience. This is the most important part since you need to be aware of the kind of key you have and how to replace that key. This is vital if want to ensure that your vehicle will be able to start when you push the buttons on your fob. This can help you avoid frustration when the key isn't working properly, and it can also save you lots of money if you're not required to make a repair appointment at an auto dealership.