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How to Replace a BMW Key Replacement of a BMW key is expensive. BMW keys are high-tech and must be reprogrammed to function with the vehicle. You can save money by purchasing a new BMW car key on the internet, but you need to locate a dealer who specializes in car keys and has good reviews. It is also recommended to visit the dealership to ensure your replacement key is properly programmed. Smart Keys Many of the latest BMW models are equipped with the smart-key system that lets you lock and unlock your car by simply turning the steering wheel. In addition, some models come with a feature that lets you start the engine from a distance, and also remotely shut the windows and open the sunroof. These keys feature radio for locking or unlocking as well as infrared (IR) to communicate with the dashboard. The IR circuit is powered by an infrared link with two ways which transmits commands from and to the dashboard, as well as to the receptacle within the key. This allows the key to control the car from a few meters away. bmw 1 series key fob G28 Car Keys Solutions features an RF coil that detects the remote lock signal of the car and transmits it to the dashboard. These smart keys are also able to store information like mirror and power seat settings. If you want to share access to a friend, all you need to do is pair the key to an iPhone and follow the prompts on your device. This will enable you to the key to be shared with them that can be used for as long as their device is on and within Bluetooth range. Modern smart keys, unlike older key fobs for cars that transmit the same frequency repeatedly (which could impact cars that use the same system, making it easier for criminals with tech skills to steal vehicles) they transmit a different encrypted message each time they are used to open or close the door or to open the trunk. The radio antennas in the vehicle respond by creating the corresponding frequency to identify the key, unlock or start it. Hacking is possible, but not impossible. A skilled professional can intercept IR transmissions and gain access to your car. Always keep a spare key in your vehicle, or leave your smart key at home if you are planning to eat out or shop. If you lose your keys, be sure to keep your VIN number and government ID handy in case you need a replacement. Key Fob Batteries The BMW key fob is a convenient device that offers security and convenience with the push of a single button. The battery of the key fob could also go out of service, as with everything powered by a battery. This occurs at the worst time. Fortunately the replacement of the battery of a BMW key fob's battery is easy and quick. To replace the battery of the key fob you must open the fob at the seam that joins its two halves. The backplate of the fob is typically fixed by a notch that can be opened with either a finger or a screwdriver with a flat blade. After the backplate has been removed, insert a new button cell battery in its place. The new battery is likely to resemble a small coin with plus and minus marks printed on it. Inject the new battery into the fob in the same orientation that you used to insert the old battery and then join the two halves. After replacing the battery on the key fob make sure to press each button to verify that it is working as expected. Based on the model, you could need to reconnect your key fob to your vehicle or take other steps to make sure it is working properly. Consult the owner's manual of your BMW for more detailed instructions on how you can re-sync the key fob. A dead or weak battery in your key fob can reduce the range the signal can communicate with the vehicle, limiting its ability to lock or open the doors or trunk, or arm or disarm your alarm system. If you're finding that you are required to stand closer and closer to your vehicle in order to access the key fob to unlock or start the engine, it's time to replace the battery. It's easy to replace the battery on your key fob at home. After replacing the battery, test the keyfob's functionality by locking and unlocking your vehicle, or placing it in the ignition. Then, you can reassemble the key fob, and then test it again to make sure it functions correctly. By understanding when a key fob's battery requires replacement, knowing how to change the battery, and knowing how to start your vehicle using a an empty battery from the key fob then you'll be on your way to enjoying the BMW's convenience and secure features. Slant Shaped Key Batteries If you're a BMW owner, then you enjoy the benefits of your car's keyless entry and ignition features. These conveniences make driving your BMW more enjoyable, and they can even assist you in avoiding some common car issues. However, if you aren't attentive to the indicators that your BMW key fob battery is dwindling it could quickly run out of juice. When your BMW key fob is dead, it's no longer in a position to communicate with the computer in your vehicle to unlock or start the engine. The batteries that are found in many BMW keys can be replaced. The procedure is simple and takes just minutes. Keep an extra BMW in your pocket to recharge the battery if it is exhausted. When replacing a BMW keyfob battery, it is important to choose the correct type of battery. The smart key requires a CR2450, while the sleek slant-shaped slant-shaped Comfort Access fobs that were used in a variety of F series models from 2011 to 2017 require a CR2032 battery. Both are available at the majority of auto shops as in department stores for a reasonable price. Another option is to get a replacement key for your BMW from the dealership or a locksmith. These keys are laser cut and coded by car manufacturers to ensure compatibility with keyless entry and starting systems. The drawback is that these keys are more expensive than the aftermarket versions and can take longer to arrive. If you're interested in getting an alternative key for your BMW you should consider BimmerTech's easy online ordering process to save yourself time and money. While the most common way to start your BMW is with the traditional key, some drivers prefer using their smartphones as a “surrogate” key. Your smartphone can connect to your BMW's keyless entry and start system using Bluetooth technology. This is especially helpful during hot weather, when you don't wish to carry a heavy BMW Key in your pocket. Valet Key Batteries Key fobs are a very useful tool but at times, you may run out of battery power. This can make it difficult to lock your car and stop you from being able to start the engine. Fortunately, replacing a BMW key fob battery isn't too difficult and can be done at home. The steps can vary slightly depending on the kind of key you own, but they are all fairly similar. The newer slant-shaped batteries for key batteries are easy to replace through a a simple process. You simply need to press the small tab to release the inside of the valet key located on the bottom or side of the fob. The battery can be accessed with a screwdriver that is flat. After the old battery has been removed, you can install a new one and then put everything back together. If you have an older diamond-shaped key that has rechargeable batteries It can be tricky to replace the battery. The keys are not designed to be replaced using batteries, and they can be damaged if you attempt to pry off the backplate. You may force it open, but you'll probably need the help of a professional. If you need to replace an old battery it is recommended to contact a dealer to get it done properly. Another thing to consider is that there are different types of BMW keys to choose from. Each key fob comes with its specific driver profile, and can be connected to different drivers. This allows family members to share the same car but still have the ability to personalize their driving experience. This is a crucial article because you need to know which type of key you own and how to replace that key. It is important to be aware of this if you would like your car to start when you press the buttons on your key fob. You can save yourself frustration and money by not needing to make an appointment at the dealership if your key does not work properly.