Changing the Battery in Your BMW Car Key Fob
Many BMWs require a key fob with an elegant, slant-shaped, sleek battery. This type of battery is usually available at hardware stores or even big-box stores.
Changing this battery is a straightforward process and can be accomplished in the comfort of your home. Tulley BMW of Nashua will guide you through this process, so you can be back on the Johns Creek roads in no time.
How to change a battery

Many BMW owners don't know that they might have to replace the battery in their key fob at some point in their ownership. It's a good thing, as this is among the most simple DIY car maintenance tasks you can tackle yourself. The replacement of the battery should take just a few minutes, and it is inexpensive. The battery can be found at many local convenience stores and parts centers for less than ten dollars.
In most instances the BMW key fob is powered by the CR2032 battery and is often called a "watch battery." Remove the cover of the key fob, and then carefully insert the new battery gently. Make sure to pay attention to the orientation of the new battery because it must be placed with the plus and minus indicators in the same direction as the previous 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 that has an actual metal key that is inserted into the ignition. The batteries that are in these keys also degrade in time, so you will need to replace them in order to get your vehicle running. This type of battery is rechargeable, and replacing it involves cutting a small part of the key fob, so be very careful when performing this task.
This kind of BMW key has a slightly different procedure, however it's still very simple. You'll first need to remove the metal fob key and then open the port on the other side of the key. Once you have opened the access port, you'll need to employ a flat screwdriver divide the two halves of the key fob. Once the key fob has been divided in two halves it is easy to remove and replace the battery that has died. The two halves will snap back together once you've replaced your battery. If you need assistance or have questions regarding how to change the battery in your BMW key fob, please contact us now! Our team is always there to help. We are looking forward to helping you with your automotive requirements.
CR2450 Battery
It's possible you didn't even know that the BMW key fob requires a particular battery to work properly. The CR2450 battery is a three-volt lithium coin cell battery that powers the many different functions of your key fob including remote locking and unlocking, Comfort Access functionality, and even remotely starting your car! These functions require additional power that comes from a CR2450 battery, which is slightly larger in size than its CR2032 counterpart.
These batteries are available in gas stations and supermarkets as well as other stores that sell lithium batteries with 3 volts. They usually cost between $7 to $9 for a set of four batteries. However, an accurate price comparison may provide cheaper alternatives from lesser-known brands.
Change the battery inside your BMW key fob is a simple procedure that doesn't require additional reprogramming or resyncing with your vehicle. Remove the valet key, remove the battery and push the tab. Place a new battery in the same way, ensuring that the positive side is facing upwards, and reassemble the fob.
After you've replaced the battery on your BMW key fob, you must test it to ensure it locks and unlocks the vehicle correctly and works with all of its other functions expected of it. For instance, you could test pressing the buttons on the fob to make sure they are turned on, locked or unlock the trunk. Once you're sure that everything works as expected you can put the fob on and go!
The key fob is equipped with an electronic chip that stores security codes and programming required to communicate with your BMW. The key fob battery powers this information, but the chip is able to keep it even if you remove the battery. This is one of the reasons why it is important to replace the battery quickly when it begins to get worn out.
BMW key fobs run on sleek CR2032 batteries. This battery is used in electronic devices and can be easily replaced when needed. A larger CR2450 is needed for models with Comfort Access or remote start features. This is a more powerful battery specifically designed for high-drain applications and is available from a wide range of retailers. These batteries can last up to 10 Years when maintained properly. They have a nominal power of 600-620mAh. The Key Lab are great for applications with high drains where you need to maximize performance and durability. For the best results, stick to a trusted brand for your replacement battery. This will ensure that the new battery will be high-quality, and will withstand daily use.
CR2032 Battery
The CR2032 battery is a common coin cell that is used in a wide range of electronic devices, such as remote controls and key fobs. It is also used in fitness and medical trackers. This kind of battery can also be used in heart rate monitors produced by companies like Polar, Garmin, and Wahoo Fitness. It is also commonly used in bike parts such as road shifters from SRAM and FSA as well as in some headlights.
Like the name suggests, a 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, so it can remain dormant for years without losing too much of its charge. This low self-discharge rate and the capacity to keep a charge even in extreme temperatures makes it a very popular battery for electronic devices.
Battery life is contingent on a variety of factors, including the materials storage conditions, the amount of duration of storage the battery, physical damage, humidity and temperature. The ideal storage space is a climate-controlled, dry space without any physical damage. It is crucial to only purchase the best 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 all major battery manufacturers and are sold in a wide range of retail stores. Some of the most sought-after brands include Energizer, Panasonic and Duracell. These brands are known for their dedication to the highest standards of safety and reliability. If you have questions about the authenticity of a specific battery or its packaging, it's recommended to contact the manufacturer directly for more details.
When using a CR2032, it is important to remember that the battery has a positive terminal and the 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 placed into an item with the wrong side facing forward, it could damage the device or even cause an explosion.
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 pulled down to connect the battery, and can only be done so by hand. If you're installing the CR2032 battery into a device, such as smoke detectors or sensors, be sure that the tab contacts on the metal are in the proper place. The device might not function or you could experience inconsistent results. Luckily, the instructions for most smoke detectors and sensors include diagrams that show the best way to place the battery. If you can't find the wiring diagram for your particular device, it's recommended to watch a video that shows how to insert the battery.