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BMW Battery Replacement – How to Do it Yourself If your BMW keyfob isn't responding to the lock and unlock buttons, or has stopped working entirely, then you may need an entirely new battery. It's easy to replace the battery on your own. The battery is replaced by taking the access port off the valet key. Then, you must register the replacement battery. How to replace the battery A car battery is the most important element of a car, and it will need to be replaced at least a few times during the course of a driver's career. It's not hard to replace the BMW battery yourself and you could even save money. The key to success with a DIY battery replacement is knowing the amount of work the job actually requires. The first step is to determine which type of battery your BMW makes use of. There are three kinds of batteries, each with its own pros and cons. One of the most well-known is a lead-acid battery, which contains lead and sulphuric acid. It produces electricity through an chemical reaction and it recharges itself whenever you use your BMW. Other battery types found in BMWs include Gel or Absorbent Glass Mat. These batteries function similarly however they require different handling and installation. Once you've got a clear picture of the type of battery your BMW has and you know the battery's name, it's time to replace the old one. The majority of auto parts stores have systems that match the BMW model and include the right battery. This can help you save time. You may also want to look at the owner's manual, which will likely include the battery type required for your specific model. To change the battery in a BMW key fob, shut off your vehicle and take out the metal blade of the valet key or flat screwdriver to access the lock cylinder. Then, remove the fob's liner, and locate the battery. After taking the batteries out clean the terminal connectors and then carefully reinstall them. Don't tighten the brackets too tight, as this could cause cracks in the battery case. Connect the positive terminal first, before the negative terminal. Finally, reconnect the upholstery to its normal place. Registering your new battery is an excellent idea to do. If you do this the engine control module (known as the DME) will be aware that the new battery is installed and won't be confused about which one to charge. It also resets the battery's age statistics which can stop overcharging of your brand new BMW battery in Smyrna or Alpharetta. How to Replace a CR2032 battery A dead key fob is an inconvenience, but it's also quite simple to replace the battery. It takes only about a minute and can be done at home. The key fobs in BMW automobiles use CR2032 batteries that are a typical watch battery. They're a little more expensive than other types of batteries, but you can easily find them at any convenience retailer or parts store. You can replace the battery by removing the old one and replacing it with the new one. Then, place the fob back on. This is a simple procedure that will allow you to restart your car within a matter of minutes. If you've been driving your BMW around the Johns Creek area, and you suddenly realize that your key fob won't work, it's likely because of an unresponsive battery. Fortunately, it's easy to repair! The first step is to press the small tab on the side of your BMW key fob to unlock the inside valet key. You'll see an unassuming port next to the battery once the key fob is opened. You can make use of a flat screwdriver, or similar tool to open the battery cover, then replace it with a brand new one. If you're in need of a new BMW or to purchase a used car available near Decatur Make sure to look through our inventory at Tulley BMW of Nashua! Contact us today if have any questions regarding our vehicles. bmw replacement key to help you find the perfect vehicle for your needs! How do you replace the CR2450 Battery The BMW key fob is an important component of your driving experience, offering security and convenience with the push of the button. However with time the battery inside your BMW key fob can be damaged and require replacement to ensure that it functions properly. Knowing how to replace a BMW key fob battery can help you get back on the road swiftly and easily. While there are several different types of BMW key fobs, the majority of them use the same battery type such as CR2450 or the CR2032 coin cell. This small, round battery is available in most stores for less than $1 per unit. In addition to being easily accessible, CR2450 batteries are also very simple to install and remove from the key fob. To replace the CR2450 battery in your BMW first look for the tab on the key fob which opens the metal valet key within the fob. After the metal valet key is removed, search for an access port that is small on the front of the fob which hides the key battery cover. Remove the cover using a flat-headed screwdriver, revealing the battery. Insert a new battery with the positive side facing upwards and then reassemble your key fob. After the new battery has been installed, test the key fob to make sure that it is operating correctly. If the key fob still fails to respond, consult your BMW dealership for further troubleshooting assistance. Older BMW models might require the key fob and the vehicle to be re-synced after changing the battery, however this isn't the norm for BMWs manufactured in recent years. It is possible to replace the battery inside an old BMW key fob, by opening the case and putting an alternative one into. However, this procedure is not recommended as it may cause damage to the internal circuitry. Instead, Tulley BMW of Nashua recommends following the steps in this guide to change the CR2450 battery for most BMW key fobs. This simple task can be accomplished within a couple of minutes and can help you get back on the road faster. How to Replace a CR2032 Side Indent Battery The CR2032 side indent battery that is included in the BMW series 1 key fob (and other models) is simple to replace. This battery appears like a penny and can be easily inserted into the slot. Replace the battery you have used before with the new one using your fingers. Make sure you match up the polarity. There are replacement batteries in many auto parts stores, as well as online. If your BMW has diamond key fobs it is a bit more complex. The CR2016 battery inside this key is not the same as either a CR2032 or a CR2025, and you can't open the case to replace it. You can test if it works by rotating a CR2016 using conductive aluminum foil. If it fails, you'll need to cut off the plastic fob to expose the battery. Then solder in a replacement. The majority of BMW key fobs have a small access port that can be opened with the edge of a blade made of metal from a different key or a flat screwdriver. If you don't have a steel blade you can try using the tip of a pencil. Once you remove the cover and the CR2032 batteries will be clearly visible. It's important to know that the CR2032 side indent battery wasn't intended to be serviced, and you can't open the case. This battery is rechargeable and is charged when the key is inserted into the ignition. It's a good idea to have a spare key available in case your remote gets lost or broken. If you need assistance programming your BMW remote or replacing the battery that is dead, contact us at Tulley BMW of Nashua. We have a dedicated team of experts who are available to address your questions or concerns. We look forward having a conversation with you!