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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 in order to work with your car. 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 that has excellent reviews. It is also recommended to visit a dealership to make sure that your replacement is programmed correctly. Smart Keys Keys Nowadays, a lot of new BMW cars come with an intelligent key system that allows you to lock and unlock your vehicle with a simple click of a button on the steering wheel. Some models also feature remote systems that allow you to start the engine and close the windows and sunroof from a distance. These keys feature radio for locking or unlocking as well as infrared (IR) to communicate with the dashboard. The IR circuit is powered by a two-way infrared link that transmits commands from the dashboard, in addition to the receptacle within the key. The key is able to control the car even from a distance of just a few meters. The key is equipped with an RF coil which receives and transmits the remote signal for locking from the car to the dashboard. The smart keys can also store information such as power seat and mirror settings. If you'd like to share access to a person with whom you share access all you need to do is connect the key to an iPhone and follow the instructions on your device. This will enable you to provide them with an electronic key that will work for as long as your phone is running and in Bluetooth range. In contrast to older key fobs, which transmit the same frequency repeatedly (which could impact other makes and models utilizing the same system, not to mention make it easier for tech-savvy thieves to take cars) Modern smart keys transmit a distinct encrypted signal each time they're used to open or close a door or open the trunk. The antennas in the vehicle respond by emitting a specific frequency to recognize the key and unlock or open it. Smart key systems could be vulnerable to hacking however. An experienced professional can be able to intercept the IR transmissions and gain access to your vehicle. Always keep a spare key in your vehicle, or leave your smart key at home if you plan to go out to eat or shop. If you do lose your keys, be sure to keep the VIN number of your BMW and a government ID in case you have to obtain an exchange from the dealer. Key Fob Batteries The BMW key fob provides security and convenience with the push of a single button. But, as with everything that relies on a battery the battery of the key fob is prone to dying at the worst possible moment. It's easy to replace the BMW key fob's battery. To replace the battery in the key fob you must open the fob at the seam connecting its two halves. The backplate of the fob is typically held in place by a notch that can be opened using a finger or a flat-blade screwdriver. Once the backplate is removed, you can insert a new button cell battery in the slot. The new battery is usually designed to look as a small coin and has plus and minus symbols 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, test it by pressing the fob's buttons to ensure they work as expected. Based on the model you have you may have to re-synchronize the key fob with your vehicle, or follow other steps to ensure proper operation. If you have to update the sync of your key fob, consult the vehicle's owner manual for the specific instructions applicable to your BMW. A weak or dead battery in your key fob may reduce the range it communicates with your car, limiting the ability to lock or unlock the trunk or doors or arm/disarm the alarm system. If you are noticing that you are required to stand closer and closer to your vehicle in order to unlock the key fob, or unlock or start your engine, it is likely time to replace the battery. Change the battery of the key fob is a simple task that can be done at home. After replacing the battery, test the keyfob's functionality by locking and unlocking your vehicle or placing it in the ignition. Reassemble the keyfob and then test it again to make sure that it is working properly. Knowing what happens when the batteries on the key fob need to be replaced, the best way to replace them, and how to start a car with a dead battery will help you enjoy all of BMW's useful features. Slant Shaped Key Batteries BMW owners probably benefit from the keyless entry system and ignition. g28carkeys can make driving your BMW more comfortable and may even assist you to avoid some common automotive issues. If you aren't paying attentively to the indications that your BMW keyfob battery is low, it could quickly go out. If your BMW key fob fails to function and cannot communicate with the car computer to unlock the doors or even start the motor. Fortunately, the batteries in most BMW key fobs can be replaced relatively cost-effectively. The procedure is simple and takes only about a minute. If you have an extra BMW key it's an ideal idea to keep it in your pocket so that you can swap the battery as soon as it runs out of power. When replacing a BMW keyfob battery, it is important to choose the correct type of battery. The smart key requires a CR2450 battery, while the sleek slant-shaped and Comfort Access fobs, which were available in various F series models from 2011 until 2017 require a battery CR2032. Both kinds can be bought at many department stores and auto shops for fairly cheap prices. Another option is to get an alternative key for your BMW from a locksmith or dealership. These keys are laser-cut and coded by car manufacturers to ensure compatibility with keyless entry and starting systems. The drawback is that they are more expensive than the replacement keys and can take longer to arrive. If you're interested in getting a replacement key for your BMW you should consider BimmerTech's easy online ordering process to save yourself time and money. Some drivers prefer using smartphones as a “surrogate key” to start their BMW. With Bluetooth technology your smartphone can be connected to your BMW's keyless entry and start system. This can be particularly useful on hot days when you don't want to carry the weighty BMW key around in your pocket. Valet Key Batteries A key fob is an effective tool, however you may sometimes run out of batteries. This can make it difficult to lock your car and prevent you from being able to start the engine. Fortunately, changing a BMW key fob battery isn't difficult and can be done at home. The steps can differ based on the type of key, however they're all quite similar. The newer slant-shaped batteries for key batteries are easy to replace with a simple process. Press the small tab to let the valet key go. It is located on the bottom or the side of the fob. You can then use a flat screwdriver to take out the access port that is hidden by the battery. After you have removed the old battery, you can replace it with a new one. After that, you can put it back together. It isn't easy to replace a battery on an older diamond-shaped key by rechargeable ones. 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 likely need to hire a professional. If you are looking to replace a battery that is old it is recommended to call a dealer to get it done properly. BMW keys are available in different styles. Each key fob comes with its own driver profile and can be paired with different drivers. This makes it easier for family members to share a single car and still be able to customize their driving experience. This is a crucial article since you need to be aware of the type of key you own and how to replace that key. This is essential if you want to ensure that your car will be able to start when you push the buttons on your fob. This will save you from frustration if the key isn't working properly, and it can also save you a significant amount of money if you're not obligated to make a repair appointment at a dealership.