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How to Replace a BMW Key The replacement of a BMW key is expensive. This is due to the fact that BMW keys are high-tech and require reprogramming to work with your vehicle. You can save money by purchasing a brand new BMW car key online, but you must find a seller who is specialized in car keys that has excellent reviews. It's also recommended that you visit a dealer to ensure that the replacement key is properly programmed. Smart Keys Nowadays, a lot of new BMW cars come with an intelligent key system that allows you to lock and unlock your vehicle with just a click of an icon on the steering wheel. In addition, some models also come with a system that lets you start the engine from a distance and also remotely shut the windows and the sunroof. spare bmw key G28 Car Keys are advanced and use radios for locking and unlocking and infrared (IR) to communicate with the dashboard. The IR circuit is an infrared link with two ways that sends commands from the dashboard, and also to the receptacle inside the key. The key is able to control the car even from a distance of a few meters. The key also features an RF coil that picks up the remote lock signal of the car and transmits it to the dashboard. These smart keys can also be used to store information like mirror and power seat settings. If you wish to share access to a friend all you need to do is connect the key to an iPhone and follow the prompts on your device. This will allow you to share a digital key that works as long as the phone is powered up and within Bluetooth range. Unlike older car key fobs, which transmit the same frequency repeatedly (which could impact other models and makes that use the same system, not to mention makes it easier for thieves with a tech background to take cars), modern smart keys emit a distinct encrypted signal every time they are used to open or close a door or pop the trunk. The vehicle's embedded radio antennas respond by generating the corresponding frequency to identify the key, lock it or start it. Hacking is possible but it isn't impossible. An experienced professional can be able to intercept the IR transmissions and gain access to your vehicle. To safeguard yourself, keep a backup key in your vehicle or ensure you leave the smart keys 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 government ID handy in case you need an replacement. Key Fob Batteries The BMW key fob provides security and convenience at the press of a single button. But, just like anything that relies on a battery the battery in the key fob is prone to dying at the most inconvenient time. It's easy to replace BMW key fob batteries. Open the fob along the line that joins the two halves. The fob's backplate is held in place with a notch which can be opened with the flat-bladed screwdriver or finger. Insert a new button-cell battery into its place after removing the backplate. The new battery is usually shaped like a small coin, with plus and minus symbols printed on it. Place the new battery inside the fob in the same way that you did when inserting the old battery and then join the two halves. After replacing the battery on the key fob make sure to press each button to ensure whether it functions as you expect. Based on the model, you may need to reconnect your key fob to your vehicle or take other steps to ensure it works properly. If you're required to re-sync your key fob make sure you consult the owner's manual for detailed instructions specific to your BMW. A weak or dead battery for the key fob can decrease the range of the signal that connects with your car, which can limit its ability to lock and unlock doors and trunk and arm/disarm the alarm system. It is time to replace your battery if 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 done at home. After replacing the battery it is important to test the functions of the key fob by locking and unlocking the vehicle, or inserting it into the ignition. Reassemble the keyfob, and test it once more to ensure that it is working properly. Understanding when the key fob's batteries need to be replaced and how to replace them, and how to start a vehicle without a battery that is dead will help you enjoy all of BMW's useful features. Slant Shaped Key Batteries If you're a BMW owner, then you take a lot of advantage of the keyless entry and ignition features. These features make driving your BMW more enjoyable, and they can even help you avoid some common car problems. If you aren't paying attention to the indicators that your BMW keyfob battery is running low, it will eventually run out. If your BMW key fob is damaged and is no longer able to communicate with the vehicle's computer in order to unlock or start the engine. Fortunately, the battery inside the majority of BMW key fobs can be replaced relatively cost-effectively. The process is straightforward and typically takes only about a couple of minutes to complete. Keep an extra BMW in your pocket to recharge the battery if it is exhausted. The most important thing to keep in mind when changing a BMW key fob battery is to select the correct replacement battery. A smart key will require the CR2450 battery, whereas the Comfort Access and sleek slant-shaped fobs used in many F-series models between 2011 and 2017 will require the CR2032 battery. Both are available at the majority of auto shops as in department stores for affordable prices. Another option is to get an alternative key for your BMW from an authorized locksmith or dealer. The keys are laser cut and digitized by the car manufacturers to ensure compatibility with keyless entry and starting systems. The disadvantage is that these keys are more expensive than the ones from the aftermarket and may take longer to arrive. BimmerTech provides a user-friendly online ordering system for BMW replacement keys. This will help you save time and money. Some drivers prefer to use smartphones as an “surrogate key” to start their BMW. Your smartphone can connect with the keyless start and entry system via Bluetooth technology. This can be especially useful on hot days when you don't want carry a heavy BMW key in your pocket. Valet Key Batteries Key fobs are a extremely useful tool, but sometimes you may be unable to recharge your battery. This can make it difficult to lock your car and it could also prevent you from turning on the engine and drive. Fortunately, changing a BMW key fob battery is not difficult and can be done at home. The steps can differ based on the kind of key, but they're all pretty 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 that opens the inside of the valet key located on the bottom or side of the fob. You can then make use of a flat screwdriver remove the access port that is hiding the battery. Once the old battery is removed, you can install a new one and then put it back together. It can be difficult to replace a battery on an older diamond-shaped key with rechargeable ones. Unlike the slant-shaped keys, these are not intended to have the battery replaced. They can be damaged when trying to remove the back plate of the key. You can force it open but you'll most likely need a professional. It is advised that if you require to replace batteries, you call an auto dealer for help from a professional. Another thing to think about is that there are many different kinds of BMW keys to choose from. Each key fob has a specific driver profile, and you can pair them to different drivers in your vehicle. This makes it easier for family members to share a vehicle while being in a position to personalize their driving experience. This is a crucial article because you must know which kind of key you have and how to replace that key. It is essential to know this if you want your car to start once you press the buttons on the key fob. You can save yourself frustration and money by not needing to make an appointment at the dealership in the event that your key doesn't perform as expected.