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Changing the Battery in Your BMW Car Key Fob

Many BMWs require that the key fob has a slant-shaped, sleek battery. This kind of battery is often readily accessible at hardware stores or even big-box stores.

This battery can be changed at the at the comfort of your home. Tulley BMW Nashua can guide you through the process to ensure you are back on Johns Creek roads quickly.

How to replace a battery

Many BMW drivers don't realize that they might require a battery change on their key fob at some point in their ownership. This is one of the easiest DIY tasks for car maintenance that you can do yourself. It shouldn't take more than just a few minutes to replace the battery and the cost of the replacement is very low. The battery can be found at local convenience stores and auto parts shops for less than ten dollars.

In most instances the BMW key fob is powered by the CR2032 battery and is often known as a "watch battery." Remove the key fob cover, and then gently insert the new battery in gently. Make sure you pay attention to the orientation of the new battery, since it has to be installed with the plus and minus indicators facing 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 able to drive your BMW around Decatur and Johns Creek again.


Certain older BMW models have keys of a different kind that is an actual metal key that is inserted into the ignition. The batteries that are in these keys also degrade over time, and you'll have to replace them to start your car. This type of rechargeable battery requires you to cut a tiny piece of the key fob to replace it.

This type of BMW key has a slightly different procedure, however it's still very simple. First, great site need remove the key made of metal from the fob, then, you'll need to open the access port in the side of the key fob. After you've opened the access port, you'll need to 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 dead battery. The two halves will snap back together after you've replaced the battery. If you need help, or if you have questions regarding how to replace the battery on your BMW key fob, call us today! Our team is always ready to help. We are eager to assist you with all your automotive requirements!

Battery CR2450

It's possible you didn't even know, but the BMW key fob requires a special battery in order to work properly. The CR2450 battery is a 3-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 vehicle! These functions require the additional power provided by the CR2450 battery that is slightly larger in diameter than its CR2032 counterpart.

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

Changing the battery inside your BMW key fob is a straightforward process that doesn't require any additional programming or resyncing with your vehicle. Remove the valet key, then pull out the battery and press the tab. Place the new battery in exactly the same way and ensure that the positive side faces upwards. 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 expected functions. You can, for example press each button on the fob to make sure they lock, turn off or off the trunk. Once everything is functioning as expected you can put the fob back together and go moving!

The key fob is equipped with a chip which stores the security codes and the programming needed to communicate with your BMW. The battery in the key fob powers this information, however the chip can retain it even after you have removed the battery. This is one of the main reasons it is important to replace the battery promptly when it begins to get worn out.

BMW key fobs are powered by the sleek CR2032 batteries. This is a common battery type that's found in a variety of electronic devices and is simple to replace when you're required to. A larger CR2450 is required for models with Comfort Access or remote start features. This is a larger battery that is specifically made for high-drain use. It is available from a variety of retailers. They can last up to 10 years when kept in a safe and secure manner. They come with a nominal power of 600-620mAh. These batteries are ideal for high-drain situations that require the highest performance and durability. For the best results, stick with a trusted brand your replacement battery. This will ensure that your new battery is of the highest quality and will hold up to the rigors of everyday use.

CR2032 Battery

The CR2032 battery is a common coin cell that is used 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 used in heart rate monitors made by companies like Polar, Garmin and Wahoo Fitness. It is also found in bike parts, including road shifters by SRAM and FSA as well as some headlights.

A CR2032 uses lithium chemistry, and is a round shape with a diameter and height of between 20 and 32 millimeters. It has a low self-discharge rate, which means it can remain in storage without losing a lot of charge. This battery is a favorite for electronics due to its low self-discharge as well as the capacity to keep a charge even in extreme temperatures.

Battery life depends on a myriad of factors including material quality, storage conditions and storage time and physical damage, humidity, and temperature. The ideal storage space is a dry, climate-controlled area without any physical damage. It is essential to purchase only the best quality batteries from trusted retailers since less expensive batteries might have lower capacities and could die prematurely.

Lithium coin cells are available from the majority of major battery manufacturers and are sold in a wide range of 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 are unsure about the authenticity of the battery or its packaging it is best to ask the manufacturer for more details.

One of the most important aspects to keep in mind when using a CR2032 battery is that it has two terminals: positive and negative. The positive terminal of a CR2032 batteries is marked by a dot at the top, while the negative terminal is marked by an arrow on the base. If the battery is inserted into an item with the wrong side facing forward it could cause damage to the device or create a fire hazard.

There is no socket or plug to connect the battery CR2032. Instead the CR2032 battery is connected to the device through an aluminum tab. The tab must be press to connect the battery. This can only be done by hand. Installing a CR2032 into a device, such as a smoke detector or sensor requires that the tab contacts made of metal are in the correct position. The device may not work or give inconsistent results. The instructions for all smoke detectors and smoke sensors contain diagrams that show which way to insert the batteries. If you are unable to find a diagram for your particular device, it's a good idea to watch a video on how to install the batteries.

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