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How to Replace a BMW Key The cost of replacing the BMW key can be expensive. BMW keys are high-tech and require reprogramming to function with the vehicle. Purchasing a new BMW key online can save you money, but it is essential to choose a seller that 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 Keys Today, many new BMW cars come with an intelligent key system that allows you to lock and unlock your car by simply pressing a button on the steering wheel. Additionally, certain 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 to lock and unlock and infrared to communicate with the dashboard. The IR circuit is powered by an infrared link with two ways that sends and receives commands from the dashboard, as well as to the receptacle in the key. The key can be controlled by the car even from a distance of a few metres. 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 are also able to store information such as power seat and mirror settings. If you want to share access with a friend all you have to do is connect the key to an iPhone and follow the prompts on your device. This will provide them with a key that can be used for as long as their device is on and within Bluetooth range. Modern smart keys, unlike older car keys that broadcast the same frequency over and over again (which could harm cars using the same system, making it easier for cyber-savvy criminals to steal vehicles) They transmit a distinct encrypted message each time they are used to open or shut doors or open the trunk. The car's antennas respond by emitting a specific frequency in order to recognize the key and allow it to unlock or start it. Smart key systems could be vulnerable to hacking however. A skilled professional can snoop on IR transmissions to gain access to your car. To protect yourself, always keep a backup key or make sure to leave the smart key at home when you go out for a meal or out shopping. If you lose your keys, be sure to keep your VIN number and ID from the government handy in the event that you require an replacement. Key Fob Batteries The key fob is an important feature of the BMW driving experience, offering security and convenience by pressing one button. The battery for the key fob can also die, as with any device powered by batteries. This occurs at the worst time. bmw keys replacement to replace BMW key fob's battery. Open the fob at the seam that joins the two halves. The fob's backplate is held in place with the notch that can be opened using a flat-bladed screwdriver or a finger. After the backplate has been removed, place a brand new button cell battery into its place. The new battery will usually resemble a small coin and have plus and minus symbols printed on it. Place the new battery inside the fob with the same orientation that you used to insert the old battery, and then connect the two halves. After replacing the battery After replacing the battery, test it by pressing each of the buttons on the fob to make sure they function as expected. Based on the model of your car you may need to re-synchronize the key fob to your vehicle or follow other steps to ensure proper operation. Consult the owner's manual of your BMW for specific instructions on how you can re-sync the key fob. A weak or dead battery on your key fob could limit the range at which the signal can communicate with the vehicle, limiting its ability to lock or open the trunk or doors, or arm/disarm your alarm system. It is time to replace the battery if you find yourself needing to get closer to your car to unlock the doors or start the engine. It's easy to replace the battery inside your key fob at home. Once the battery is replaced it is crucial to test the functions of the key fob by locking and unlocking the vehicle, or placing it in the ignition. Reassemble the keyfob and then test it once more to ensure that it's functioning properly. Knowing what happens when the batteries on the key fob require replacement and how to replace them, and how to start a vehicle with a dead battery will help you enjoy all of BMW's convenient features. Slant Shaped Key Batteries If you're a BMW owner, you probably benefit from the many advantages of your car's keyless ignition and entry features. These conveniences make driving your BMW much easier and can assist you in avoiding some common automotive problems. If you're not aware of the signs that your BMW key fob battery is getting low it will soon be out of juice. If your BMW key fob is damaged and cannot communicate with the computer in the vehicle to unlock the doors or start the motor. Fortunately, the batteries in the majority of BMW key fobs can be replaced relatively inexpensively. The procedure is easy and usually takes just about a couple of minutes to complete. If you have an extra BMW key, it's a good idea to keep it in your pocket so you can replace the battery if it is depleted of power. The most important thing to remember when replacing a BMW key fob battery is to use the correct replacement battery. A smart key requires a CR2450 battery, while the Comfort Access and sleek slant-shaped fobs that are utilized in a number of F-series models from 2011 to 2017 will require the CR2032 battery. Both types are available at the majority of auto shops as as department stores at an affordable price. Another option is to purchase a replacement key for your BMW from an authorized locksmith or dealer. These keys are laser-cut and coded by car manufacturers to ensure compatibility with keyless entry and start systems. The downside is that the keys are more expensive than replacement keys and can take longer to arrive. If genuine bmw replacement key cost looking to purchase an alternative key for your BMW you should consider BimmerTech's convenient online ordering process to save time and money. While the most common way to start your BMW is with a traditional key certain drivers prefer to use their smartphones as an “surrogate” key. Your smartphone can connect with the keyless entry and start system by using Bluetooth technology. This is particularly useful on hot weather and when you don't want to carry around a heavy BMW Key in your pocket. Valet Key Batteries Key fobs are useful device however, sometimes you might run out of battery power. This can make it difficult to lock your vehicle and also prevent you from being in a position to start the engine. Luckily, replacing a BMW key fob battery isn't difficult and can be done at home. The steps may differ slightly depending on the type of key you have, but they are all fairly similar. It is easy to replace the newer key batteries with a slant-shaped design by following a an easy procedure. You just need to press the small tab to release the inside of the valet key located on the bottom or side of the fob. Then, you can employ a flat screwdriver to remove the access port that is hiding the battery. After removing the old battery and replacing it with a new one. Then, put everything back together. If you have an older diamond-shaped key that has a rechargeable battery It can be tricky to replace the battery. Unlike the slant-shaped keys, these are not designed to have the battery replaced and can be damaged when trying to pry off the back plate of the key. You may force it open, but you'll most likely need an expert. If you need to replace a battery that is old It is recommended to call a dealership to get it done properly. Another thing to think about is that there are different kinds of BMW keys that are available. Each key fob comes with a driver profile, and you are able to pair them with different drivers in your vehicle. This allows family members to share the same car but still have the ability to personalize their driving experience. The most important part of this article is to know which type of key you have and how to replace it. It is essential to know this if you would like your car to start when you press the buttons on your key fob. This can help you avoid frustration when the key isn't functioning properly, and it can also save you a lot of money if you're not obligated to make a repair appointment at the dealership.