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How to Replace a BMW Key Replacement of a BMW key is expensive. BMW keys are high-tech and need to be reprogrammed in order to work with the vehicle. A new BMW key online could save you money, however it is important to find a seller that specializes in keys for cars and has excellent reviews. It is also recommended that you visit a dealer to ensure that your new key is properly programmed. Smart Keys Today, many of the latest BMW vehicles come standard with a smart key system that allows you to lock and unlock your vehicle with a simple click of an icon on the steering wheel. Some models also feature a remote system that allows you to start the engine and shut the windows and sunroof from a distance. These keys are advanced and use radio to lock / unlock and infrared to communicate with dashboard. The IR circuit powers an infrared link with two ways that sends commands from and to the dashboard, in addition to the receptacle within the key. This lets the key control the car from a couple of meters away. The key is equipped with an RF coil that detects and transmits the remote signal for locking from the car to the dashboard. These smart keys can also store information, such as the power seat and mirror settings. If you want to share access to a person with whom you share access all you have to do is pair the key with an iPhone and follow the prompts on your device. This will enable you to give them an electronic key that will work as long as the phone is powered up and is within Bluetooth range. In contrast to older key fobs that transmit the same frequency repeatedly (which could affect other models and makes that use the same system, and could make it easier for thieves with a tech background to steal cars) Modern smart keys emit a distinct encrypted signal each time they're used to open or close a door, or pop the trunk. The car's antennas respond by creating a similar frequency to recognize the key, and then unlock or start it. Smart key systems may be vulnerable to hacking, however. An experienced professional can be able to intercept IR transmissions and gain access to your car. Always have a backup key or leave your smart key at home if are planning to go out to eat or shop. If you do lose your keys, be sure you keep the VIN number of your BMW and your government ID in case you need to obtain a replacement from the dealer. Key Fob Batteries The key fob is an important element of the BMW driving experience, offering security and convenience with the push of one button. But, as with everything that is dependent on a battery the battery of the key fob will eventually die, often at the worst possible time. It's simple to replace the BMW key fob's batteries. To replace the battery of the key fob you must open the fob at the seam connecting its two halves. The backplate of the fob is typically secured by a notch that can be opened with either a finger or a screwdriver with a flat blade. Insert a new button-cell battery in its place after taking off the backplate. The new battery is likely to appear like a small coin, and will have plus and minus marks printed on it. Place the new battery in the same direction as the previous one, then snap the fob's two halves back together. After replacing the battery Test it by pressing the buttons on the fob to make sure they function as you expect. Based on Visit Homepage of your car you may have to reconnect the key fob to your vehicle or follow additional steps to ensure proper operation. If you're required to sync your key fob again make sure you consult the owner's manual for specific instructions specific to your BMW. A dead or weak battery in your key fob may limit the range at which it communicates with your car, which can limit 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 find yourself needing to get closer to your car to unlock the doors or start the engine. Change the battery of the key fob is a simple task that can be accomplished at home. After replacing the battery, test the function of the keyfob by locking and unlocking your vehicle or placing it in the ignition. Reassemble the keyfob and test it again to make sure that it's functioning properly. Knowing the time when the batteries of the key fob need to be replaced, how to replace them and how to start a vehicle with a dead battery will help you enjoy all of BMW's useful features. Slant Shaped Key Batteries BMW owners probably make the most of the keyless entry system and ignition. These features can make driving your BMW easier and even help you to avoid some common car problems. If you're not aware of the signs that your BMW key fob battery is dwindling it could quickly be out of juice. If your BMW key fob fails to function and cannot communicate with the vehicle computer to open the doors or even start the motor. The battery in most BMW keys can be easily replaced. The process is simple and typically takes a few minutes to complete. If you have a spare BMW key it's a good idea to keep it in your pocket so that you can swap the battery if it's exhausted. The most important thing to remember when replacing the BMW key fob battery is to select the right replacement battery. The smart key requires a CR2450, as do the sleek slant-shaped, slant-shaped Comfort Access fobs, which were available in various F series models from 2011 to 2017 require a battery CR2032. Both types are available at the majority of auto shops as as department stores at affordable prices. A locksmith or BMW dealership can also provide you with the replacement BMW key. The 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 aftermarket versions and can take longer to arrive. BimmerTech provides a simple online ordering system for BMW keys replacement. This will save you time and money. The most popular method to start your BMW is with the traditional key, some drivers prefer to use their smartphones as an “surrogate” key. With Bluetooth technology, your smartphone can connect to your BMW's keyless entry and start system. This is particularly useful on hot days in the summer, when you don't want to carry around a bulky BMW Key in your pocket. Valet Key Batteries Key fobs are extremely useful tool, but sometimes you may run out of battery power. This could make it difficult to lock your vehicle and also prevent you from being in a position to start the engine. Fortunately, changing the BMW key fob battery isn't too difficult and can be done at home. The steps can differ based on the kind of key, but 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 can be found on the bottom or side of the fob. The battery is accessible with a screwdriver that is flat. After you have removed the old battery and replacing it with a new one. Then put everything back together. It can be a challenge to replace a battery in an older diamond-shaped key by rechargeable ones. Contrary to the slant-shaped key, they are not intended to have the battery replaced. They could be damaged if you try to remove the back plate of the key. You can attempt to force it open but you'll need a professional to do the job. It is advised that if you require to replace batteries, you call a dealership for professional help. Another thing to think about is that there are many different types of BMW keys to choose from. Each key fob has a specific driver profile, and you are able to pair them with different drivers in your vehicle. This lets family members share the same vehicle, and still be able to customize their driving experience. This is the most important part because you must know which type of key you own and how to replace it. This is crucial if you want to ensure that your car will start when you press the buttons on your fob. You will save yourself frustration and money by not needing to pay for an appointment with the dealership when your key doesn't work properly.