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Changing the Battery in Your BMW Car Key Fob

Many BMWs require that the key fob be equipped with a slant-shaped, sleek battery. This kind of battery can be found in a variety of hardware stores and even big-box retailers.

The battery can be replaced in the convenience of your home. Tulley BMW of Nashua will guide you through this procedure, so that you can return to the Johns Creek roads in no time.

How to replace a battery

Many BMW owners don't know that they could need to change the battery in their key fob at some point during ownership. It's a good thing, as this is one of the easiest DIY car maintenance tasks that you can do yourself. The replacement of your battery will take just a few minutes, and it is inexpensive. The battery can be found at local convenience stores and auto parts stores for less that ten dollars.

In the majority of cases, the BMW key fob uses an CR2032 battery and is often known as a "watch battery." Remove the key fob cover, and then gently insert the new battery gently. Make sure you be attentive to the orientation of the new battery as it must be installed with the plus and minus indicators in the same direction as the old one. After the battery has been installed and replaced, you can swap the key fob and start driving your BMW again.

Some older BMW models have a different type of key that has the physical key made of metal that inserts into the ignition. The keys may also fail in time, and you will need to replace the battery to allow your vehicle to start. This type of rechargeable battery requires you to cut off a tiny piece of the key fob to replace it.

This kind of BMW key has an additional procedure, but it's still very simple. First, you'll have to remove the key made of metal from the fob, then, you'll need to open the access port in the back of the key fob. After you've opened up the access port and then, use a screwdriver that is flat to split the two halves of the fob. When the two halves are separated, you can remove the battery that died and replace the new one. Once you've replaced the battery, you can simply snap the two halves of the key fob together again. If you need help or have any other questions regarding how to change the battery in your BMW key fob, call us today! Our team is always there to assist you. We look forward to helping you with your automotive requirements.

CR2450 Battery

It's possible you didn't even know, but the BMW key fob requires a specific battery in order to work properly. The CR2450 battery is a three-volt lithium coin cell battery that helps provide power to the numerous functions of your key fob, including remote locking and unlocking, Comfort Access functionality, and even remotely starting your automobile! These features 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 retailers which sell lithium batteries of 3 volts. They usually cost between $7 to $9 for a set of four batteries, however an accurate price comparison may uncover cheaper alternatives from lesser-known brands.

Change the battery inside your BMW key fob is a simple process that doesn't require any additional programming or resyncing with your vehicle. Remove the valet key, pull out the battery and push the button. The new battery should be placed in exactly the same manner ensuring that the positive side faces upwards. Reassemble the fob.

It's 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. You can, for example, press each button on the fob to make sure they lock, turn off or pop the trunk. After you're confident that everything works as you expected, put the fob together and go!

The key fob also houses an electronic chip that stores the security codes and programs necessary to communicate with your BMW. The battery that powers the key fob is responsible for this information, however the chip can retain 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 wear out.

BMW key fobs are powered by sleek CR2032 batteries. This battery is used in electronic devices and can be easily replaced if needed. For models that use the Comfort Access and remote start features however, a larger battery CR2450 is required. This is a more powerful battery, specially designed for high-drain applications. It can be purchased from a variety of retailers. These batteries have a nominal capacity of around 600-620 mAh, and they can last up to 10 years if properly stored. They are an excellent choice for any high-drain application where you're looking to maximize the longevity and performance. For the best results, you should go with a trusted brand your replacement battery. This will ensure that the new battery is of the highest quality and will stand up to the rigors of everyday use.

Battery CR2032

A CR2032 Battery is an extremely popular kind of coin cell battery used in many electronic devices including key fobs, remote controls as well as fitness and medical trackers. This type of battery is also commonly used in heart rate monitors manufactured by companies such as Polar, Garmin and Wahoo Fitness. It is also utilized in bike components such as road shifters made by SRAM and FSA as well as in certain headlights.

A CR2032 makes use of lithium chemistry and has a rounded shape with a diameter and height of 20 and 32 millimeters. It has a very low self-discharge, so it can remain dormant for years without losing too much of its charge. The low self-discharge rate as well as the ability to hold a charge in extreme temperatures make this a very popular battery for use in electronic devices.

Battery life depends on many factors, including the material, storage conditions, storage time and storing, physical damage, humidity and temperature. The ideal storage space is a dry, climate-controlled area with no physical damage. It is important to only purchase the best quality batteries from reliable retailers. Batteries that are not of the highest quality may have lower mAh 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. Among the most popular are Energizer Panasonic and Duracell. bmw key are renowned for their dedication to highest standards of safety and reliability. If you have any doubts regarding the authenticity of a specific battery or its packaging, it's recommended to contact the manufacturer directly to obtain additional information.

When using a CR2032 It is crucial to be aware that the battery has a positive and an negative terminal. The positive terminal of a CR2032 battery is marked by a dot at the top, while 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 even cause the risk of fire.


Unlike some types of batteries, there is no plug or socket to connect it. Instead a CR2032 battery is connected to the device through a metal tab. The tab has to be press down to connect the battery and is only done by hand. If you're putting a CR2032 battery into a device such as a smoke detector or sensor make sure the metal tab contacts are in the right place. The device may not work or you could experience inconsistent results. Luckily, the instructions for most smoke detectors as well as sensors include diagrams that show the best 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 a video that shows how to insert the battery.

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