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Changing the Battery in Your BMW Car Key Fob Many BMWs require that the key fob be equipped with a sleek, slant-shaped battery. This kind of battery is typically accessible at hardware stores or even at big-box stores. This battery can be changed at the convenience of your home. Tulley BMW of Nashua will guide you through the procedure, so that you can return to the Johns Creek roads in no time. How to Replace a Battery Many BMW owners don't know that they could need to change the battery on their key fob at some point during ownership. Fortunately, this is one of the most simple DIY car maintenance tasks you can tackle yourself. The replacement of your battery will take only a few minutes and is also very affordable. The battery is available at a variety of local convenience stores and parts stores for less than ten bucks. The BMW key fob is typically powered by a CR2032, also known as a “watch” battery. Remove the key fob's cover and then gently place the new battery. Make sure you pay attention to the orientation of the new battery, since it has to be installed with the plus and minus signs in the same direction like the old one. After the new battery is in place, simply place the cover for the key fob back on and you'll be able to drive your BMW around Decatur and Johns Creek again. Certain older BMW models have a different type of key that is an actual metal key that fits into the ignition. The keys may also fail over time, requiring you to change the battery to allow your vehicle to start. This type of rechargeable battery requires you to cut off a tiny piece of the key fob to replace it. The process for changing the battery in this kind of BMW key is slightly different, but it's still extremely simple. First, you'll need to remove the key made of metal from the fob, then open the access port in the back of the key fob. After you've opened up the access port then use a screwdriver with a flat head to separate both halves of the fob. Once the key fob is divided in two halves it is easy to remove and replace the dead battery. Snap the two halves back together after replacing your battery. If you require assistance, or if you have questions regarding how to change the battery on your BMW key fob, contact us today! Our team is always ready to help. We look forward to helping you with all your automotive needs! Battery CR2450 It's not obvious however, your BMW key fob uses a specific battery in order to function effectively. 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 functionality and even remote start of your vehicle! These features require the extra power that comes from a CR2450 battery that is slightly larger than its CR2032 counterpart. These batteries are available at gas stations and supermarkets, as well as other places that sell 3-volt lithium batteries. They typically cost around $7 to $9 for a set of four batteries. However, careful price comparison shopping may uncover cheaper alternatives from lesser-known brands. It's easy to replace the battery on your BMW keyfob. You don't need to change the program or synchronize your vehicle. Remove the valet key, pull out the battery, and then press the tab. Place a new battery in the same way, making sure that the positive side is facing up, and put it back together. After you've replaced the battery in your BMW key fob, it's crucial to test it to make sure it locks and unlocks the car properly and also works with all its other expected functions. For instance, you can try pressing all the buttons on the fob to see if they turn on, lock or open the trunk. Once you're certain that everything is functioning as you expected then put the fob in place and go! The key fob also has an electronic chip that stores the security codes and program necessary to communicate with your BMW. This information is powered by the key fob's battery, but the chip is designed to retain the information even if the battery is removed. This is why it's so important to replace the battery as soon as it starts to wear out. BMW key fobs are powered by sleek CR2032 batteries. This battery is common in electronic devices and is easily replaced when required. For models that utilize the Comfort Access and remote start features, however, a larger battery CR2450 is required. This is a much more powerful battery that's specially made for these applications and can be purchased from a wide range of retailers. These batteries can last up to 10 years when maintained properly. They have a nominal capacity of 600-620mAh. These batteries are great for high-drain applications that require the highest the performance and endurance. For the best results, go with a reputable brand for your replacement battery. This will ensure that your new battery is of high-quality and will hold up to the demands of everyday use. CR2032 Battery A C2032 Battery is a common kind of coin cell battery utilized in a variety of electronic devices, including remote controls, key fobs as well as fitness and medical trackers. This type of battery can also be found in heart rate monitors manufactured by companies like Polar, Garmin, and Wahoo Fitness. It is also widely found in bike parts, including road shifters made by SRAM and FSA as well as some headlights. A CR2032 is a lithium chemistry device, and has a rounded shape with a diameter and height of between 20 and 32 millimeters. It has a low self-discharge meaning it can be left in storage for a long time without losing any charge. This low self-discharge and the ability to keep a charge even in extreme temperatures make it an extremely popular battery to use in electronics. Battery life is contingent on a variety of factors, including the materials storage conditions, the amount of storage time, humidity, physical damage, and temperature. The ideal storage location is a dry, climate-controlled area without any physical damage. It is essential to buy high-quality batteries from reliable retailers. Low-quality batteries may have lower capacity and may die prematurely. Major battery makers offer lithium coin cells. They are also sold in many large retail stores. Some of the most popular brands are Energizer Panasonic and Duracell. These brands are reputed to adhere to the most stringent safety and reliability standards. If you are uncertain about the authenticity of the battery or its packaging, it is best to ask the manufacturer for more details. When using a CR2032, it is important to keep in mind that the battery has a positive terminal and the negative terminal. The positive terminal is indicated by a dot on top of the battery, and the negative is marked by an arc across the base. If you put the battery into a device wrong way up the device could get damaged or even an ignition risk. Unlike some types of batteries, there is no socket or plug to connect it. bmw spare key g28carkeys.co.uk CR2032 connects to a device via a metal tab. This tab must be pressed down to connect the battery, and is only done by hand. Installing a CR2032 into a device, such as a smoke detector or sensor requires that the tab contacts on the metal be in the proper position. If not, the device might not work or you could experience inconsistent results. The instructions for most smoke detectors and smoke sensors contain diagrams that explain how to place the batteries. If you are unable to find the wiring diagram for your particular device, it's an excellent idea to look up a video that shows how to insert the battery.