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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 kind of battery is usually available at hardware stores or even at big-box stores. The battery replacement is a simple task and can be done at the comfort of your own home. Tulley BMW of Nashua will guide you through the procedure, allowing you to be back on the Johns Creek roads in no time. How to Change a Battery Many BMW owners aren't aware that they may require a replacement battery in their keyfob at some time. This is among the easiest DIY tasks for car maintenance that you can perform yourself. The replacement of your battery will take only a few minutes, and it is inexpensive. The battery is available in a variety of local convenience stores and parts centers for less than ten bucks. In most instances the BMW key fob has the CR2032 battery and is often called a “watch battery.” Take off the key fob cover, and then carefully insert the new battery in gently. Be sure to pay attention to the orientation of the new battery, as it must be installed with the plus and minus indicators facing the same way as the old one. After the battery has been installed it is possible to replace the key fob, and then drive your BMW again. Certain older BMW models use an alternative type of key, which features an actual metal key that fits into the ignition. The keys may also fail with time, requiring you to change the battery in order for your vehicle to start. This kind of battery is rechargeable, and replacing it requires cutting a small portion of the key fob, so be careful when doing this. The process for changing the battery in this type of BMW key is a little different, but it's still very easy. First, you'll need to remove the key made of metal from the fob, then open the access port on the back of the key fob. Once you have opened the access port, you can use a flat screwdriver to split the two halves of the key fob. Once the key fob has been separated into two halves you can easily take it off and replace the battery that has died. You can snap the two halves back together once you've replaced the 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 ready to assist. We are looking forward to helping you with your automotive requirements. CR2450 Battery You may not realize it, but your BMW key fob uses a specific battery in order to function properly. The CR2450 is a 3 volt lithium-ion coin cell battery. It powers the key fob's various functions, including remote locking unlocking, ComfortAccess and even remote starting your vehicle! These features require a CR2450 coin cell battery which is slightly larger than its CR2032 equivalent. You can find these batteries in most places that sell regular 3-volt lithium batteries such as gas stations and supermarkets. They typically cost $7 to $9 per four-pack, but a careful price comparison may provide lower-cost alternatives from lesser-known brands. It's simple to change the battery in your BMW keyfob. You don't need to change the program or synchronize your vehicle. Remove the valet key, remove the battery and press the tab. Place a brand new battery in the same way, ensuring that the positive side is facing upwards, and put it back together. It is important to test your BMW keyfob after replacing its battery to make sure it is working as you expect it to. This includes locking and unlocking the car, as well as other functions. For instance, you could try pressing each of the buttons on the fob to make sure they are turned on, locked, or pop the trunk. Once everything is functioning as expected you can put the fob back together and be on your way! The key fob is equipped with an embedded chip that stores the security codes and programming required to communicate with your BMW. The battery in the key fob powers this information, however the chip is able to keep it even after you have removed the battery. This is one of the reasons why it's important to change the battery as soon as it begins to wear out. The majority of BMW models use the sleek CR2032 battery in their key fobs. This is a common battery type that can be found in most electronics and is easy to replace when you need to. A larger CR2450 is needed for models that utilize the Comfort Access or remote start features. This is a stronger battery, specially designed for high-drain applications. It is available at various stores. hop over to here have a nominal capacity of 600-620 mAh and can last for up to 10 years if stored properly. These batteries are perfect for applications with high drains where you want to maximize performance and longevity. Make sure you choose a reliable replacement battery to get the best results. This will ensure that the new battery is of the highest quality and will stand up to the rigors of everyday use. CR2032 Battery The battery CR2032 is a standard coin cell that is used in a variety of electronic devices, including key fobs and remote controls. It can also be found in medical and fitness trackers. This kind of battery can also be found in heart rate monitors produced by companies like Polar, Garmin, and Wahoo Fitness. It is also utilized in bike components such as road shifters from SRAM and FSA as well as in some headlights. A CR2032 uses lithium chemistry, and has a round shape with a diameter and a 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 hold a charge in extreme temperatures make it an extremely popular battery to use in electronics. bmw car key replacement depends on many factors, including the materials storage conditions, the time spent storing, physical damage, humidity and temperature. Ideally, you should keep the battery in a climate-controlled and dry space that has no physical damage or degrading. It is crucial to purchase only the best quality batteries from reputable retailers as lower quality batteries may have lower capacities in mAh and could die prematurely. Coin-cells made of lithium are available from most major battery manufacturers and are sold in a wide range of retail stores. Some of the most popular include Energizer, Panasonic and Duracell. These brands are known to adhere to the most stringent safety and reliability standards. If you are uncertain about the authenticity of the battery or the packaging, it is best to ask the manufacturer for more information. When using a CR2032 it is crucial to keep in mind that the battery has a positive terminal and an negative terminal. The positive terminal of a CR2032 batteries is marked by a dot at the top, and the negative terminal is marked with an arrow on the base. If the battery is placed into a device with the wrong side facing up it could cause damage to the device or create the risk of fire. Unlike some types of batteries, there's no plug or socket to connect to it. A CR2032 connects to a device using an aluminum tab. The tab must be pressed to connect the battery. This is only done by hand. If you're putting the CR2032 battery into a device such as a sensor or smoke detector, be sure that the tab contacts on the metal are in the proper location. If not the device will not work or you could encounter inconsistent results. The instructions for all smoke sensors and detectors include diagrams that explain how to place the batteries. If you cannot find a diagram for your specific device it is a good idea to watch a video that demonstrates the proper way to install the batteries.