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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 kind of battery is available in a variety of hardware stores and even big-box stores. The battery replacement is a simple task and can be completed at the comfort of your own home. Tulley BMW Nashua can guide you through the procedure so you can get back on Johns Creek roads quickly. How to change a battery Many BMW owners don't know that they may need to change the battery in their key fob at some point in their ownership. This is among the easiest DIY tasks for car maintenance that you can complete yourself. The replacement of your battery will take only a few minutes and is also very affordable. The battery is available at local convenience stores and auto parts shops for less than ten dollars. In the majority of instances, the BMW key fob has the CR2032 battery, which is also commonly called a “watch battery.” Take off the cover for the key fob and carefully place the new battery gently. Be sure to be attentive to the orientation of the new battery as it must be installed with the plus and minus indicators in the same direction like the old one. After the new battery is in place, simply place the cover of the key fob back in place, 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. These keys can also die over time, requiring you to replace the battery to allow your vehicle to start. The type of battery you have can be recharged, and recharging it requires cutting off a small piece of the key fob, therefore be cautious when performing this task. This type of BMW key requires an entirely different procedure, but it's still very simple. First, you'll need 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. After you have opened the access port then use a screwdriver with a flat head to cut the two halves off of the fob. Once the key fob is separated into two halves, you can easily remove and replace the battery that has died. After bmw car key replacement near me 've changed the battery, you can simply snap the two halves of the key fob again. If you need help or have any other questions regarding how to replace the battery in your BMW key fob, please contact us today! Our team is always available to assist. We are eager to assist you with all your automotive requirements! Battery CR2450 You may not realize it however, your BMW key fob uses a special battery to work correctly. The CR2450 is a 3 volt lithium-ion coin cell battery. It powers the key fob's many functions, such as remote locking and unlocking, ComfortAccess and even remote start of your vehicle! These functions require the additional power that comes from the CR2450 battery that is a bit larger in diameter than its CR2032 counterpart. These batteries are available in any store that sells regular 3-volt lithium batteries like gas stations and supermarkets. They usually cost between $7 and $9 for a four-pack, but a careful comparison of prices could uncover lower-cost alternatives from lesser-known brands. Change the battery in your BMW key fob is an easy process that doesn't require any additional programming or resyncing with your vehicle. Simply remove the valet key from the fob, press an elongated tab inside the opening, then pull out the existing battery. Place the new battery in exactly the same way, making sure 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 could test pressing the buttons on the fob to see if they are turned on, locked or open the trunk. Once you're sure that everything is working as expected you can put the fob on and go! The key fob also houses an embedded chip that contains the security codes and program required to connect with your BMW. The battery that powers the key fob is responsible for this information, but the chip will keep it even if you remove the battery. This is why it's important to replace the battery when it begins to wear out. The vast majority of BMW models utilize the sleek CR2032 battery to power their key fobs. The battery is commonly used in electronic devices and can be easily replaced when needed. A larger CR2450 battery is required for models that utilize the Comfort Access or remote start features. This is a stronger battery that has been specifically made for high-drain use. It can be bought at various retailers. They have a nominal capacity of 600-620 mAh, and they can last for 10 years when properly stored. These batteries are ideal for applications with high drains where you want to maximize performance and durability. Stick with a reputable replacement battery for the most efficient results. This will ensure your new battery is of high-quality and will stand up to the demands of daily use. CR2032 Battery The CR2032 battery is a common coin cell found in a variety of electronic devices, including remote controls and key fobs. It can also be used in fitness and medical trackers. This kind of battery is also found in heart rate monitors produced by companies like Polar, Garmin, and Wahoo Fitness. It is also widely found in bicycle components, such as road shifters made by SRAM and FSA, as well as some headlights. A CR2032 uses lithium chemistry, and has a rounded shape with a diameter and height of between 20 and 32 millimeters. It has a very low self-discharge rate, which means it can be left in dormancy for a long time, without losing much of its charge. The low self-discharge rate as well as the ability to keep a charge even in extreme temperatures make this an extremely popular battery to use in electronic devices. Battery life is contingent on a variety of elements, including the material, storage conditions, duration of storage and storing, 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 reliable retailers because low-quality batteries could have lower capacities and can die prematurely. The majority of major battery manufacturers sell lithium coin cells. They are also available in a majority of large retail stores. Among the most popular are Energizer Panasonic and Duracell. These brands are renowned for their commitment to the highest standards of safety and reliability. If you are not sure about the authenticity of the battery or the packaging, it is recommended to contact the manufacturer for more details. One of the most important things to keep in mind when using a CR2032 battery is that it has a positive and negative terminal. The positive terminal is indicated by a dot on top of the battery and the negative terminal is marked with a line across the base. If you place the battery into a device the wrong way the device could be damaged or even a fire risk. In contrast to other types of batteries, there's no socket or plug to connect to it. Instead, a CR2032 battery connects to the device via the metal tab. This tab must be press down to connect the battery. This can only be done so by hand. If you're installing a CR2032 battery into a device like a smoke detector or sensor ensure that the tab contacts on the metal are in the correct place. The device might not work or you could experience inconsistent results. Fortunately, the manuals for most smoke detectors as well as sensors provide diagrams showing which way to insert the battery. If you're unable to locate an electrical diagram for your particular device It's recommended to watch an instructional video that demonstrates how to install the battery.