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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 available at a wide range of hardware stores, and even big-box stores.

The battery can be changed in the at the comfort of your 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 Replace a Battery

Many BMW drivers don't realize that they may have to replace the battery in their key fob at some point during ownership. This is among the easiest DIY car maintenance tasks that you can complete yourself. The replacement of the battery should only take a few moments, and it is inexpensive. You can find the battery in a variety of local convenience stores as well as parts centers for less than ten dollars.

The BMW key fob is normally powered by a CR2032, also known as a "watch" battery. Remove the cover on the key fob and gently insert the new battery. Be aware of the orientation. The new battery needs to be placed in a way that the plus and minus symbols are facing the same way as the previous battery. Once the new battery is in place, simply place the key fob cover back in place and you'll be able to drive your BMW around Decatur and Johns Creek again.

Certain older BMW models have keys of a different kind, which features the physical key made of metal that is inserted into the ignition. The keys may also fail over time, requiring you to change the battery in order for your vehicle to start. The type of battery you have is rechargeable, and replacing it requires cutting a small portion of the key fob, therefore be cautious when you are performing this task.

The procedure for changing the battery in this type of BMW key is a bit different, however it's 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 side of the key fob. Once bmw key replacement have opened the access port, make use of a flat screwdriver to split the two halves of the key fob. Once the key fob is split in two parts you can easily take it off and replace the battery that has died. Once you've replaced the battery, simply snap the two halves of the key fob again. If you require assistance or have additional questions about how to change the battery on your BMW key fob, please contact us now! Our team is always there to help. We look forward to assisting you with your automotive needs.

Battery CR2450

It's not obvious however, your BMW key fob requires a specific battery in order to function properly. The CR2450 battery is a 3 volt coin cell battery made of lithium that helps provide power to the various functions of your key fob such as remote locking and unlocking, Comfort Access functionality, and even remotely starting your vehicle! These functions require the CR2450 coin cell battery, which is slightly larger than its CR2032 equivalent.

These batteries are available at supermarkets and gas station, as well as other stores which sell lithium batteries of 3 volts. They typically cost $7 to $9 for a package of four batteries. However, careful price comparison shopping may reveal cheaper options from lesser-known brands.

It's easy to change the battery in your BMW keyfob. There is no need to reset or re-synchronize your car. Simply remove the valet key from the fob, push a small tab in the opening, and 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.

It is important to test your BMW key fob after replacing its battery to ensure it functions as expected. This includes locking and unlocking the car, as well as other functions. You can, for instance press each button on the fob to make sure they lock, turn off or remove the trunk. After you're confident that everything works as you expected, put the fob together and go!

The key fob also contains an electronic chip that stores the security codes and programs required to connect with your BMW. The information is powered by the battery in the key fob However, the chip is designed to store the information even if the battery is removed. This is why it's so important to replace the battery at the time it begins to wear out.

The vast majority of BMW models use the sleek CR2032 battery to power their key fobs. The battery is commonly used in electronic devices and is easily replaced when required. A larger CR2450 is needed for models that use the Comfort Access or remote start features. This is a more powerful battery that is specifically designed for these high-drain applications and can be purchased from a variety of stores. These batteries can last up to 10 years when kept in a safe and secure manner. They have a nominal power of 600-620mAh. They are a good choice for any high-drain application that requires longevity and performance. Stick with a reputable replacement battery for the best results. This will ensure your new battery is of the highest quality and will stand up to daily use.

CR2032 Battery

The CR2032 battery is a common coin cell used in a variety of electronic devices, including remote controls and key fobs. It is also found in medical and fitness trackers. This kind of battery is also commonly used in heart rate monitors from companies like Polar, Garmin and Wahoo Fitness. It is also found in bike components such as road shifters made by SRAM and FSA and some headlights.





The name suggests that a CR2032 battery is made up of lithium chemistry and is round in shape with a diameter of 20 millimeters and a height of 32 millimeters. It has a low self-discharge, which means it can remain in storage without losing a lot of charge. This battery is popular for electronics because of its low self-discharge and ability to hold a charge even in extreme temperatures.

Battery storage life can depend on a variety of factors including material quality storage conditions such as storage time and humidity, physical damage and temperature. The ideal storage space is a climate-controlled, dry space with no physical damage. It is crucial to only purchase high-quality batteries from reliable retailers. Batteries that are not of the highest quality may have lower capacity and die prematurely.

Coin-cells made of lithium are available from most major battery manufacturers and can be found at most large retail stores. The most well-known are Energizer Panasonic and Duracell. These brands are known for their dedication to highest standards of safety and dependability. If you have any questions about the authenticity of a certain battery or its packaging, it is recommended to contact the manufacturer directly for more details.

One of the most important things to keep in mind when using a CR2032 battery is that it has both a positive and negative terminal. The positive terminal is identified by a dot on top of the battery while the negative terminal is marked with an arc across the base. If the battery is inserted into a device with the wrong side facing forward it could cause damage to the device, or even create the risk of fire.

As opposed to other kinds of batteries, there is no plug or socket to connect to it. Instead a CR2032 battery is connected to the device through a metal tab. The tab needs to be squeezed to connect the battery. This can only be done by hand. If you're installing the CR2032 battery into a device, such as smoke detectors or sensors, be sure that the metal tab contacts are in the correct place. If they aren't it could not work or you might experience inconsistent results. Luckily, the instructions for most smoke detectors as well as sensors will provide diagrams of the proper way to insert the battery. If you are unable to find a wiring diagram for the specific device, it's an excellent idea to look up an instructional video on how to install the battery.