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Changing the Battery in Your BMW Car Key Fob Many BMWs require keys with an elegant, slant-shaped, sleek battery. This type of battery is often readily found at hardware stores, or even at big-box stores. This battery can be changed at the convenience of your home. Tulley BMW Nashua can guide you through the process to ensure you can get back on Johns Creek roads quickly. How to Replace a Battery Many BMW owners are unaware that they may require a replacement keyfob's battery at some moment. This is one of the most simple DIY tasks for car maintenance that you can do yourself. The replacement of your battery will only take a few moments and is a bargain. The battery can be found at local convenience stores and auto parts centers for less than ten dollars. In most cases the BMW key fob uses the CR2032 battery that is also known as a “watch battery.” Remove the key fob cover, and then carefully insert the new battery into it gently. Be aware of the orientation. The new battery must be installed in a manner that the plus and minus symbols are facing the same way as the previous battery. Once the battery is installed it is possible to replace the key fob and drive your BMW again. Certain older BMW models come with a different key type that is a steel key that you insert into the ignition. The batteries that are in these keys also degrade with time, so you'll need to replace them in order to start your car. This type of rechargeable battery requires you to cut off a tiny piece of the key fob to replace it. This kind of BMW key has a slightly different procedure, but it is still very simple. You'll first have to remove the metal fob key and then open the port on the other side of the key. After you've opened the access port, use a flat screwdriver to separate the two halves of the key fob. When the two halves are separated, you can easily remove the dead battery and insert the new one. Snap the two halves back together after replacing the battery. Contact us today if you need assistance or have questions about how to replace the battery in your BMW Key Fob. Our team is always available to help. We look forward to helping you with your automotive needs. CR2450 Battery It's not obvious however, your BMW key fob requires 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 and unlocking, ComfortAccess, and even remote starting your vehicle! These features require the extra power that comes from a CR2450 battery that is a bit larger in size than its CR2032 counterpart. These batteries are available in supermarkets and gas station and other places that sell 3-volt lithium batteries. They typically cost $7 to $9 for a set of four batteries, but careful price comparison shopping could uncover cheaper alternatives from lesser-known brands. Change the battery in your BMW key fob is a straightforward procedure that doesn't require additional programming or resyncing to your vehicle. Simply remove the valet key from the fob, then press an elongated tab inside the opening, then pull out the battery. The new battery should be placed in exactly the same manner, making sure that the positive side faces towards the upward direction. Reassemble the fob. 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 works with all of its other functions that are expected. For instance, you could test pressing the buttons on the fob to make sure they turn on, lock, or pop the trunk. Once everything is functioning as expected you can put the fob back together and be moving! The key fob also contains an embedded chip that contains the security codes and programming necessary to communicate with your BMW. The battery in the key fob powers this information, but the chip is able to keep it even after you remove the battery. This is why it's so important to replace the battery when it begins to wear out. The vast majority of BMW models utilize the sleek CR2032 battery for their key fobs. This is a common battery type that is found in all electronics and is simple to replace whenever you need to. A larger CR2450 battery is required for models with Comfort Access or remote start features. This is a more powerful battery that's specially designed for these high-drain applications and can be bought from a variety of retailers. These batteries have an average capacity of 600-620 mAh, and they can last up to 10 years when properly stored. They are an excellent choice for any high-drain task where you're looking to maximize longevity and performance. For the best results, stick with a reputable brand for your replacement battery. This will ensure that the new battery is of the highest quality, and will withstand daily use. Battery CR2032 The CR2032 battery is a common coin cell that is used in a wide range of electronic devices, including remote controls and key fobs. It is also found in medical and fitness trackers. This type of battery can also be used in heart rate monitors manufactured by 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. A CR2032 makes use of lithium chemistry and has a round shape with a diameter and height of between 20 and 32 millimeters. It has a low self-discharge rate, which means it can remain in storage for a long time without losing any charge. bmw key fob replacement cost -discharge rate as well as the ability to hold a charge in extreme temperatures makes it an extremely popular battery for electronics. Battery storage life can depend on a variety of factors including material quality storage conditions and storage time as well as physical damage, humidity and temperature. Ideally, you want to store the battery in a climate controlled and dry area with no physical damage or degradation. It is essential to purchase the best quality batteries from reliable retailers. Lower quality batteries can have lower mAh and die prematurely. Lithium coin cells are available from most major battery manufacturers and can be found in a wide range of retail stores. Some of the most sought-after brands include Energizer, Panasonic and Duracell. These brands are renowned for their commitment to the highest standards of security and reliability. If you are not sure about the authenticity of the battery or the packaging, it is best to ask the manufacturer for more information. One of the most important points to keep in mind when using a CR2032 battery is that it has two terminals: positive and negative. The positive terminal of a CR2032 battery is marked by a dot at the top, and the negative terminal is marked by a line at the base. If the battery is placed into an item with the wrong side facing forward it could cause damage to the device or even cause the risk of fire. There isn't a socket or plug to connect the CR2032 battery. Instead, a CR2032 battery connects to the device via an aluminum tab. This tab must be pressed down to connect the battery. This can only be done by hand. If you're installing a CR2032 battery into a device such as smoke detectors or sensors make sure the metal tab contacts are in the proper place. The device might not work or give inconsistent results. The instructions for most smoke detectors and smoke sensors contain diagrams that explain how to place the batteries. If you cannot find the diagram for your specific device, it is a good idea to watch a YouTube video that demonstrates the proper way to install the batteries.