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Changing the Battery in Your BMW Car Key Fob Many BMWs require that the key fob be equipped with a slant-shaped, sleek battery. This type of battery is usually found at hardware stores, or even big-box stores. The battery can be replaced at the comfort of your own home. Tulley BMW Nashua can guide you through the process to ensure you can be back on Johns Creek roads quickly. How to replace a battery Many BMW owners aren't aware that they may require a replacement battery in their keyfob at some moment. Fortunately, this is among the most simple DIY car maintenance tasks you can do yourself. The replacement of the battery should only take a few moments, and it is inexpensive. The battery can be found in a variety of local convenience stores and parts stores for less than ten dollars. The BMW key fob is normally powered by a CR2032 or a “watch” battery. Remove the key fob's cover and then gently place the new battery. Make sure you pay close attention to the orientation of the new battery as it must be installed with the plus and minus signs facing the same direction like the old one. Once the battery is installed it is possible to replace the key fob, and then drive your BMW again. Certain older BMW models use an alternative type of key that is a physical metal key that inserts into the ignition. These keys can also die in time, and you will need to replace the battery in order for your vehicle to start. This kind of battery can be recharged and replacing it requires cutting off a small piece of the key fob so be careful when doing this. The process to change the battery in this kind of BMW key is a bit different, but it's still very easy. First, you'll have to remove the key made of metal from the fob, and then, you'll need to open the access port on the back of the key fob. Once you've opened the access port then use a screwdriver with a flat head to split the two halves of the fob. When the two halves are separated, you can easily remove the battery that died and replace the new one. The two halves will snap back together after you've replaced the battery. If you need assistance, or if you have questions regarding how to change the battery on your BMW key fob, please contact us today! Our team is always there to assist you. We are looking forward to helping you with your car needs. CR2450 Battery You might not be aware, but your BMW key fob uses a specific battery in order to function correctly. The CR2450 is a 3-volt lithium-ion coin cell battery. It powers the key fob's various functions, including remote locking unlocking, ComfortAccess, and even remote starting your vehicle! These features require the extra power provided by a CR2450 battery, which is slightly larger in diameter than its CR2032 counterpart. They are sold in gas stations and supermarkets, as well as other places that sell lithium batteries with 3 volts. They typically cost around $7 to $9 for a pack of four batteries, but careful price comparison shopping may provide cheaper alternatives from lesser-known brands. It's easy to replace the battery on your BMW keyfob. It's not necessary to reset or re-synchronize your car. Simply remove the valet key from the fob, press the small tab that's in the opening, and then pull out the current battery. Install the new battery exactly the same manner and ensure that the positive side is facing up. Reassemble the fob. After you've replaced your battery in your BMW key fob, it's crucial to test it to ensure it locks and unlocks the vehicle correctly and also works with all its other functions that are expected. For instance, you can, press each button on the fob in order to make sure they lock, turn off or remove the trunk. Once you're sure that everything works as you expected you can put the fob on and go! The key fob is equipped with an embedded chip that stores the security codes and programs needed to connect with your BMW. This information is powered by the battery in the key fob however, the chip is designed to retain this information even if the battery is removed. This is why it's so important to replace the battery at the time it begins to wear out. The vast majority of BMW models use the sleek CR2032 battery in their key fobs. This is a common battery type that is found in all electronics, and it's easy to replace when you need to. A larger CR2450 battery is required for models that use the Comfort Access or remote start features. This is a more powerful battery that has been specifically designed for high-drain applications. It can be purchased at a variety stores. These batteries can last for up to 10 years when maintained properly. They come with a nominal power of 600-620mAh. They are an excellent option for any application that requires the longevity and performance. For the best results, go with a reputable brand for your replacement battery. This will ensure that the new battery is of high-quality and will hold up to the rigors of daily use. CR2032 Battery The CR2032 battery is a common coin cell used in a variety of electronic devices, such as remote controls and key fobs. It is also found in fitness and medical trackers. This kind of battery is also commonly used in heart rate monitors from companies like Polar, Garmin and Wahoo Fitness. It is also used in bike components like road shifters from SRAM and FSA as well as in certain headlights. Like the name suggests, a CR2032 battery uses lithium chemistry and is round in form with a diameter of 20 millimeters and height of 32 millimeters. It has a low self-discharge, which means it can remain in storage for a long time without losing any charge. This low self-discharge rate and the ability to keep a charge even in extreme temperatures makes it an extremely popular battery for use in electronics. The life of batteries is influenced by many factors, including the material storage conditions, the duration of storage, physical damage, humidity and temperature. Ideally, you want to keep the battery in a controlled climate and dry location that is free of physical damage or degrading. It is important to buy only the best quality batteries from trusted retailers since less expensive batteries might have lower capacities in mAh and may die prematurely. Coin cells made of lithium are available from most major battery manufacturers and are sold at most large retail stores. Among G28 Car Keys are Energizer Panasonic and Duracell. These brands are known to adhere to the highest safety and reliability standards. If you have any questions regarding the authenticity of a particular battery or its packaging, it is recommended to contact the manufacturer directly to obtain additional information. One of the most important points to remember when using a CR2032 battery is that it has a positive and negative terminal. The positive terminal of a CR2032 battery is marked with a dot on the top, while the negative terminal is marked with a line at the base. If the battery is placed into a device with the wrong side facing forward it could cause damage to the device or even cause an explosion. There isn't a socket or plug to connect the battery CR2032. A CR2032 connects to a device using a metal tab. This tab must be press down to connect the battery. This can only be done by hand. The installation of a CR2032 into a device such as a smoke detector or sensor requires that the tab contacts made of metal are in the correct position. The device might not function or give inconsistent results. Fortunately, the manuals for the majority of smoke detectors and sensors provide diagrams showing which way to insert the battery. If you're unable to locate an electrical diagram for your specific device it's an excellent idea to look up an instructional video on the proper way to install the battery.