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Changing the Battery in Your BMW Car Key Fob Many BMWs require a key fob with an elegant, slant-shaped, sleek battery. This kind of battery is often readily found at hardware stores, or even at big-box stores. The battery replacement is a simple task and can be accomplished at the comfort of your home. Tulley BMW of Nashua will walk you through this process, so you can be back on the Johns Creek roads in no time. How to Change a Battery Many BMW drivers don't realize that they could require a battery change on their key fob at some point during their ownership. This is one of the most simple DIY car maintenance tasks that you can do yourself. The replacement of your battery will take just a few minutes and is a bargain. The battery can be found at local convenience stores and auto parts stores for less than ten dollars. In the majority of instances the BMW key fob is powered by the CR2032 battery that is also known as a “watch battery.” Remove the cover for the key fob and then gently insert the new battery into it gently. Be aware of the orientation. The new battery should be installed so that the plus and minus symbols are facing the same way as the previous battery. Once the new battery is in place, simply place the cover for the key fob back on, and you'll be ready to drive your BMW around Decatur and Johns Creek again. Some older BMW models have keys of a different kind that has an actual metal key that fits into the ignition. The batteries that are in these keys will also degrade over time, and you will need to replace them in order to get your vehicle running. The type of battery you have is rechargeable, and replacing it requires cutting off a small piece of the key fob, therefore be cautious when doing this. This type of BMW key has a slightly different procedure, however it's still very simple. You'll first have to take off the metal fob key and then open the port on the side of the key. Once you've opened the access port, you can use a flat screwdriver to separate the two halves of the key fob. Once the key fob is separated into two halves, you can easily remove and replace the battery that is dead. Snap the two halves back together after replacing your battery. If you need assistance, or if you have additional questions about how to replace the battery on your BMW key fob, call us today! Our team is always available to assist you. We are looking forward to helping you with your car needs. Battery CR2450 It's possible that you didn't realize that the BMW key fob requires a special battery in order to function properly. The CR2450 is a 3 volt lithium-ion coin cell battery. It powers the key fob's numerous functions, such as remote locking unlocking, ComfortAccess, and even remote starting your vehicle! These features require the extra power that comes from the CR2450 battery that is a bit larger than its CR2032 counterpart. These batteries are available in gas stations and supermarkets, as well as other stores which sell lithium batteries of 3 volts. They usually cost $7 to $9 per four-pack, but a careful price comparison may provide cheaper alternatives from lesser-known brands. Change the battery in your BMW key fob is a straightforward process that doesn't require any additional programming or resyncing with your vehicle. Remove the valet key, pull out the battery and press the tab. Install a new battery the same manner, making sure that the positive side is facing upwards and then rebuild the fob. It's crucial to test your BMW keyfob after replacing its battery to make sure it works as expected. This includes locking and unlocking the car and other functions. For instance, you can, press each button on the fob to verify that they lock, turn off or off the trunk. Once web that everything is working as you expected then put the fob in place and go! The key fob has an embedded chip that stores the security codes and programming required to connect with your BMW. The battery that powers the key fob is responsible for this information, however the chip is able to keep it even if you remove the battery. This is why it's so important to replace the battery as soon as it starts to wear out. The majority of BMW models use the sleek CR2032 battery to power their key fobs. The battery is commonly used in electronic devices and can be easily replaced when required. A larger CR2450 is needed for models that use the Comfort Access or remote start features. This is a larger battery, specially made for high-drain use. It can be purchased from a variety of stores. These batteries have a nominal capacity of around 600-620 mAh and can last up to 10 years if stored properly. They are a good choice for any high-drain task where you're looking to maximize longevity and performance. Stick with a reputable replacement battery to get the best results. This will ensure that your new battery is of the highest quality and will stand up to the demands of daily use. CR2032 Battery A C2032 Battery is a popular kind of coin cell battery that is used in a variety of electronic devices like key fobs, remote controls as well as fitness and medical trackers. This kind of battery is also used in heart rate monitors manufactured by companies such as Polar, Garmin, and Wahoo Fitness. It is also used in bicycle components, such as road shifters made by SRAM and FSA, as well as some headlights. As the name implies, the CR2032 battery is a lithium-based one and is round in form with 20 millimeters of diameter and height of 32 millimeters. It has a very low self-discharge, so it can be left in dormancy for a long time without losing too much of its charge. This low self-discharge rate and the capacity to keep a charge even in extreme temperatures make it a very popular battery for use in electronics. Battery storage life can depend on a myriad of factors such as the quality of the material, storage conditions and storage time and physical damage, humidity and temperature. Ideally, you should keep the battery in a climate-controlled and dry location that is free of physical damage or degradation. It is important to buy only the best quality batteries from trusted retailers since less expensive batteries might have lower mAh capacities and could end up dying prematurely. Coin cells made of lithium are available from the majority of major battery manufacturers and can be found at the majority of large retail stores. The most well-known are Energizer Panasonic and Duracell. These brands are renowned for their dedication to highest standards of safety and reliability. If you are uncertain about the authenticity of the battery or the packaging, it is recommended to contact the manufacturer for more information. When using a CR2032 It is crucial to keep in mind that the battery has a positive and an negative terminal. The positive terminal is indicated by a dot at the top of the battery and the negative terminal is marked with an outline across the base. If you put the battery into a device the wrong way, the device could be damaged or even be an ignition risk. There isn't a socket or plug to connect the battery CR2032. A CR2032 connects to a device through an aluminum tab. The tab needs to be press down to connect the battery and can only be done by hand. Installing a CR2032 into a device such as a smoke detector or sensor requires the tab contacts on the metal be in the correct position. The device might not work or give inconsistent results. Fortunately, the manuals for most smoke detectors and sensors will provide diagrams of the proper way to place the battery. If you're unable to locate the wiring diagram for the specific device It's recommended to watch a video that shows how to insert the battery.