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How to Replace a BMW Key The cost of replacing a BMW key can be costly. This is due to the fact that BMW keys are high-tech and require reprogramming in order to function with your vehicle. You can save money by purchasing a new BMW car key online, but you should locate a dealer who is an expert in car keys with good reviews. It is also recommended to visit a dealer to ensure that your new key is programmed correctly. Smart Keys Keys Many of the latest BMW models come with the smart-key system that allows you to lock and unlock your vehicle by simply pressing the steering wheel. Certain models also come with remotes that allow you to start the engine and close the windows and sunroof from an extended distance. These advanced keys make use of radio to lock / unlock and infrared technology to communicate with the dashboard. The IR circuit is an infrared link with two ways that sends commands from and to the dashboard, and also to the receptacle within the key. This allows the key to control the car from just a few meters away. The key has an RF coil that detects and transmits the remote signal for locking from the car to the dashboard. These smart keys also store information such as power seat and mirror settings. To give access to someone else, you simply need to pair the key with an iPhone and then follow the instructions on your device. This will the key to be shared with them that is working as long as their phone is connected and within Bluetooth range. Modern smart keys, as opposed to older car keys that transmit the same frequency continuously (which could harm cars using the same system, making it easier for cyber-savvy criminals to steal cars) they transmit a different encrypted message each time they are used to open or close a door or pop out the trunk. The car's antennas respond by generating a corresponding frequency to recognize the key, and then unlock or open it. Smart key systems could be vulnerable to hacking however. A skilled professional could be able to intercept IR transmissions and gain access to your vehicle. Always have a backup key or leave your smart key at home if you are going to eat out or shop. If you lose your keys, be sure to keep the VIN number of your BMW and your government ID in case you have to obtain an exchange from the dealer. Key Fob Batteries The key fob is an important feature of the BMW driving experience, offering convenience and security by pressing a button. But, as with everything that relies on batteries the battery of the key fob can die-often at the most inconvenient time. Fortunately replacing a BMW key fob battery is quick and easy. To replace the battery of the key fob you must open the fob at the seam that connects its two halves. The fob's backplate is held in place by a an opening that can be opened using an screwdriver with a flat blade or a finger. Once the backplate is removed, insert a new button cell battery in the slot. The new battery is likely to resemble a small coin with plus and minus signs printed on it. bmw replacment key should be placed in the same way as the old one, and then snap the fob's two halves back together. After replacing the battery on the key fob Press each button to verify whether it functions as you expect. Based on the model, you could have to re-sync your key fob to your vehicle or take other steps to make sure it works correctly. Check the owner's manual for your BMW for more detailed instructions on how to re-sync the key fob. A dead or weak 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 the alarm system. If you're finding that you have to stand closer and closer to your vehicle to access the key fob to unlock or start the engine, it's time to replace the battery. It is easy to change the battery in your key fob at home. After replacing the battery, you should test the function of the keyfob by locking and unlocking your vehicle or placing it in the ignition. After that, reassemble the key fob and test again to make sure it functions properly. If you know the moment when a key fob's batteries requires replacement, knowing how to change the battery, and also how to start your car with a an empty battery from the key fob then you'll be on your way to taking advantage of the BMW's convenient and secure features. Slant Shaped Key Batteries If you're a BMW owner, then you benefit from the many advantages of your car's keyless entry and ignition features. These features make driving your BMW much more comfortable, and they can even help you avoid some common car issues. If you don't pay attentively to the indications that your BMW keyfob battery is running low, it may be out of charge. If your BMW key fob is damaged and it isn't able to communicate with the car 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 takes just a few moments. If you have an extra BMW key, it's an ideal idea to keep it in your pocket so that you can replace the battery as soon as it runs out of power. When replacing the BMW keyfob battery, it's important to choose the correct type of battery. The smart key requires a CR2450, as do the sleek slant-shaped, slant-shaped Comfort Access fobs used in many F series models from 2011 to 2017, require a battery CR2032. Both types can be purchased at many auto shops and department stores for fairly cheap prices. 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 the vehicle's manufacturer to ensure compatibility with the keyless entry and start system. 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. Some drivers prefer using smartphones as a “surrogate key” to start their BMW. Through Bluetooth technology smartphones can connect to your BMW's keyless entry and start system. This is especially helpful during hot weather when you don't want to carry a heavy BMW key around in your pocket. Valet Key Batteries Key fobs are a useful device, but sometimes you may be unable to recharge your battery. This could make it difficult to lock your vehicle and stop you from being able to start the engine. It is simple to replace the battery in the case of a BMW keyfob. The steps can differ based on the type of key, however they're quite similar. It is easy to replace the key batteries that have a slant shape with an easy procedure. You simply need to press the small tab to release the inside of the valet key, which is found on either the bottom or side of the fob. You can then use a flat screwdriver to take out the access port that is hidden by the battery. 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 with rechargeable batteries it could be more difficult to replace the battery. These keys aren't designed to be replaced with batteries, and could be damaged if you try to pry the backplate off. You can try to open it but you'll need a professional to do so. It is advised that if you require to replace the battery, you contact an auto dealer for help from a professional. Another thing to take into consideration is the fact that there are a variety of different kinds of BMW keys that are available. Each of these key fobs has its own driver profile, and you are able to pair them to different drivers in your vehicle. This allows family members to share a single car, while still being able to customize their driving experience. The most important thing to remember in this article is that you need to know which type of key you have and the best way to replace it. This is crucial if you want to ensure that your vehicle will start when you push the buttons on your fob. You will save yourself frustration and money by not having to make an appointment with the dealership when your key doesn't work properly.