Changing the Battery in Your BMW Car Key Fob
Many BMWs require that the key fob be equipped with a sleek, slant-shaped battery. This kind of battery is available in a variety of hardware stores and even at big-box retailers.
The battery replacement is a simple task and can be accomplished in the comfort of your own home. Tulley BMW Nashua can guide you through the procedure so you can get back on Johns Creek roads quickly.
How to Replace a Battery
Many BMW owners don't know that they could need to change the battery in their key fobs at some point in their ownership. Fortunately, this is among the most simple DIY car maintenance tasks that you can do yourself. The battery replacement should take only a few minutes and is also very affordable. The battery is available at local convenience stores and auto parts shops for less that ten dollars.

The BMW key fob is typically powered by a CR2032 which is also referred to as a "watch" battery. Take off the cover of the key fob and gently insert the new battery. Pay attention to the orientation. The new battery needs to be placed in a way that the plus and symbols for minus are facing the same direction as the old battery. After the battery has been installed it is possible to replace the key fob and drive your BMW again.
Certain older BMW models have an alternative type of key that is the physical key made of metal that is inserted into the ignition. Keys can also become obsolete with time, requiring you to change the battery to allow your vehicle to start. This kind of battery can be recharged and replacing it involves cutting a small portion of the key fob, therefore be cautious when doing this.
The procedure for changing the battery in this type of BMW key is a bit different, but very easy. You'll first need to remove the key fob made of metal and then open the port on the side of the key. Once you've opened the access port then use a screwdriver with a flat head to split the two halves of the fob. Once the key fob is divided in two halves, you can easily remove and replace the battery that is dead. After you've changed the battery, simply snap the two halves of the key fob together again. If you need help, or if you have additional questions about how to change the battery in your BMW key fob, contact us now! Our team is always available to assist. We look forward to helping you with all your automotive requirements!
Battery CR2450
It's not obvious that your BMW key fob is powered by an exclusive battery 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 functionality, and even remote starting your vehicle! These functions require the CR2450 coin cell battery which is slightly larger than its CR2032 equivalent.
You can find these batteries in any store that sells regular lithium batteries of 3 volts like gas stations and supermarkets. They typically cost around $7 to $9 for a set of four batteries. However, careful price comparison shopping may provide cheaper alternatives from lesser-known brands.
It's simple to change the battery in your BMW keyfob. You don't need to reset or re-synchronize your car. Simply remove the valet key from the fob, press the small tab that's in the opening, and pull out the current battery. Install a new battery the same way, making sure that the positive side is facing up and then put it back together.
It's crucial to test your BMW keyfob after you've replaced its battery to ensure it works as expected. This includes locking and unlocking the car and other functions. You can, for example press each button on the fob to ensure that they lock, turn on or pop the trunk. After you're confident that everything works as you expected, put the fob together and go!
The key fob also contains a chip that holds the security codes and programming required to connect with your BMW. The information is powered by the battery in the key fob however, the chip is designed to retain the information even if the battery is removed. This is why it's so important to replace the battery when it begins to wear out.
BMW key fobs are powered by sleek CR2032 batteries. This is a common battery type that can be found in all electronics and is easy to replace if you require it. A larger CR2450 battery is required for models that use the remote start or Comfort Access features. This is a stronger battery that is specifically designed for high-drain applications and can be bought from a wide range of retailers. These batteries have an average capacity of 600-620 mAh and can last for 10 years if stored properly. They are an excellent choice for any high-drain task where you're looking to maximize the longevity and performance. For the best results, go with a reputable brand for your replacement battery. This will ensure that your new battery is of high-quality and will stand up to the demands of daily use.
Battery CR2032
The CR2032 battery is a popular 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 type of battery is also used in heart rate monitors made by companies such as Polar, Garmin and Wahoo Fitness. bmw key programmer is also widely used in bike components like road shifters made by SRAM and FSA as well as in a few headlights.
The name suggests that the CR2032 battery uses lithium chemistry and is a round shape with 20 millimeters of diameter and a height of 32 millimeters. It has a low self-discharge so 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 this a very popular battery for use in electronics.
Battery life depends on a myriad of factors such as the quality of the material storage conditions such as storage time as well as physical damage, humidity, and temperature. The ideal storage location is a climate-controlled, dry space without physical damage. It is important to only buy high-quality batteries from reputable retailers. Lower quality batteries can have lower mAh and may die prematurely.
Coin cells made of lithium are available from the majority of major battery manufacturers and are sold at the majority of large retail stores. Among bmw 1 series key are Energizer Panasonic and Duracell. These brands are known for their dedication to highest standards of safety and reliability. If you are not sure about the authenticity of the battery or its packaging it is best to inquire with the manufacturer for further details.
One of the most important points 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 the top of the battery, and the negative terminal is marked with a line across the base. If the battery is inserted into an item with the wrong side facing upwards, it could damage the device or create an explosion.
Unlike some types of batteries, there is no plug or socket to connect it. A CR2032 connects to a device through the metal tab. The tab must be press to connect the battery. This is only done by hand. Installing a CR2032 into a device like a smoke detector or sensor requires the tab contacts made of metal are in the proper position. If not it could not function or you may encounter inconsistent results. Fortunately, the instructions for the majority of smoke detectors and sensors include diagrams that show the best way to place the battery. If you are unable to find a wiring diagram for your particular device it's recommended to watch an instructional video on the proper way to install the battery.