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Changing the Battery in Your BMW Car Key Fob Many BMWs require a key fob with a sleek, slant-shaped battery. This type of battery is available in a variety of hardware stores and even big-box retailers. This battery can be changed in the convenience of your home. Tulley BMW of Nashua will guide you through this process, so you can return to the Johns Creek roads in no time. How to Change a Battery Many BMW owners don't know that they may require a battery change in their key fob at some point during ownership. This is among the most simple DIY car maintenance tasks that you can complete yourself. The battery replacement should only take a few moments and is a bargain. The battery can be found at a variety of local convenience stores as well as parts centers for less than ten bucks. The BMW key fob is normally powered by a CR2032 which is also referred to as a “watch” battery. Remove the cover of the key fob and then gently insert the new battery. Be aware of the orientation. The new battery must be installed in a manner that the plus and minus symbols are facing the same direction as the old battery. After the battery has been installed it is possible to replace the key fob and drive your BMW again. Certain older BMW models have a distinct key type that is a metal key that you insert into the ignition. The batteries in these keys will also degrade over time, and you'll need to replace them to get your vehicle running. This type of rechargeable battery requires you to cut a tiny piece of the key fob to replace it. This type of BMW key requires an additional procedure, but it's nevertheless very simple. First, you'll need to remove the metal fob key and then open the port on the side of the key. Once you've opened the access port, you'll need to make use of a flat screwdriver to split the two halves of the key fob. Once the key fob is divided in two halves you can easily take it off and replace the battery that is dead. Snap the two halves back together after you've replaced your battery. Contact us today if you require assistance or have any questions about how to replace the battery in your BMW Key Fob. Our team is always available to help. We are eager to assist you with all your automotive requirements! CR2450 Battery You may not realize it however, your BMW key fob uses an exclusive battery to function properly. The CR2450 battery is a 3-volt coin cell battery made of lithium that provides power to the many different functions of your key fob including remote locking and unlocking, Comfort Access functionality, and even remotely starting your car! These features require a CR2450 coin cell battery which is slightly larger than its CR2032 equivalent. They are sold in gas stations and supermarkets and other retailers that sell 3-volt lithium batteries. They typically cost $7 to $9 per four-pack, however a careful comparison of prices could provide lower-cost alternatives from lesser-known brands. The battery change in your BMW key fob is an easy procedure that doesn't require additional programming or resyncing to your vehicle. Remove the valet key, remove the battery and push the tab. Install the new battery exactly the same manner and ensure that the positive side faces upwards. Reassemble the fob. It is important to test your BMW keyfob after you've replaced its battery to ensure that it works as expected. This includes locking and unlocking the car, as well as all other functions. For example, you can try pressing all the buttons on the fob to see if they are turned on, locked, or pop the trunk. Once everything's working as expected you can put the fob back together and get moving! The key fob is equipped with a chip which stores the security codes and programs needed to connect with your BMW. The battery that powers the key fob is responsible for this information, but the chip is able to keep it even if you remove the battery. This is one of the reasons why it's crucial to replace the battery quickly when it begins to wear out. BMW key fobs are powered by sleek CR2032 batteries. The battery is commonly used in electronic devices and is easily replaced when needed. A larger CR2450 is needed for models that use the Comfort Access or remote start features. This is a more powerful battery specifically made for these applications and can be purchased from a variety of retailers. They can last up to 10 years when kept in a safe and secure manner. They have a nominal capacity of 600-620mAh. They are a great choice for any high-drain application where you want to maximize durability and performance. For the best results, you should go to a trusted brand for your replacement battery. This will ensure that the new battery is high-quality and will hold up to the rigors of everyday use. CR2032 Battery The CR2032 battery is a common coin cell used in a wide range of electronic devices, including key fobs and remote controls. It is also found in medical and fitness trackers. This type of battery is also commonly used in heart rate monitors from companies like Polar, Garmin and Wahoo Fitness. It is also widely used in bike parts such as road shifters made by SRAM and FSA as well as in certain headlights. As the name implies, the CR2032 battery uses lithium chemistry and is round in shape with 20 millimeters of diameter and a height of 32 millimeters. It has a low self-discharge rate, meaning it can be left in storage without losing a lot of charge. The low self-discharge rate as well as the capacity to keep a charge even in extreme temperatures make this an extremely popular battery for electronics. The life of batteries is influenced by many elements, including the material storage conditions, the duration of storage and storing, humidity, physical damage, and temperature. The ideal storage location is an air-conditioned, dry area without physical damage. It is essential to purchase the best quality batteries from reputable retailers. Batteries that are not of the highest quality may have lower mAh capacity and may die prematurely. Coin cells made of lithium are available from all major battery manufacturers and can be found at the majority of large retail stores. Some of the most popular brands are Energizer Panasonic and Duracell. These brands are renowned for their dedication to the highest standards of safety and dependability. If you are uncertain about the authenticity of the battery or its packaging it is recommended to contact the manufacturer for more details. When using a CR2032 It is crucial to be aware that the battery has a positive terminal and an negative terminal. The positive terminal of a CR2032 battery is marked by a dot at the top. The negative terminal is marked with a line on the base. If you insert the battery into a device the incorrect way the device could get damaged or even an ignition risk. As opposed to other kinds of batteries, there's no socket or plug to connect to it. Instead, a CR2032 battery connects to the device using an aluminum tab. The tab needs to be pressed to connect the battery. This can only be done by hand. If you're installing a CR2032 battery into a device like a sensor or smoke detector ensure that the metal tab contacts are in the right location. The device might not work, or you may experience inconsistent results. The instructions for the majority of smoke detectors and smoke sensors include diagrams that indicate how to insert the batteries. If key replacement bmw are unable to find a wiring diagram for your particular device it's a good idea to watch an instructional video that demonstrates how to insert the battery.