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BMW Battery Replacement – How to Do it Yourself If your BMW key fob isn't working with your lock and unlock buttons or has stopped working altogether it may need a new battery. It's simple to replace the battery yourself. Simply locate the access port that is hidden within the valet key, remove it, and switch out the battery with a fresh one. You must then register the new battery. How to Replace the Battery A car battery is the most crucial component of any car and will need to be replaced at least once during a driver's life. However, replacing the BMW battery isn't necessarily the most complicated do-it-yourself task, and you could even save cash by doing it yourself. The key to a successful DIY battery replacement is knowing how much work it will take. It is essential to know the type of battery that 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 recharges itself when you drive your BMW. Other types of batteries that are that are used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries have similar operation but require a different installation and handling. It's time to replace your old battery once you know which one your BMW utilizes. Many auto parts stores have systems in place to match your BMW's model and model with the correct battery, which will help you save time. You can also try looking at the owner's manual, which will likely contain the type of battery required for your particular model. To replace bmw keys made near me on a BMW keyfob, turn your vehicle off and take the metal blade from the valet key. You can also make use of a flat screwdriver or valet keys to open the lock-cylinder. Remove the liner from the fob and locate the battery. After taking the batteries out, clean the terminal connectors then carefully reinstall. Do not tighten brackets too much, since they could break the battery case. Connect the positive terminal first before connecting the negative. Finally, connect the upholstery to its normal location. It's recommended to register your new battery. If you do this the engine control module (known as the DME) will know that the new battery is installed and won't be confused as to which one to charge. This will also reset the battery's age data to ensure that you don't overcharge your brand new BMW battery. How to Replace a CR2032 battery It's a pain to lose your key fob, but replacing the battery is easy. It only takes some minutes and can be done at home. The key fobs found in BMW vehicles are powered by CR2032 batteries, which are a common watch battery. They're a little more expensive than other kinds of batteries, however they are easily found at any convenience store or parts centre. You can change the battery by removing the old one and replacing it with the new one. Then you can place the fob back on. It's a simple process and you'll be able to restart your vehicle in the blink of an eye. If you've been driving your BMW around the Johns Creek area, and you notice that your key fob isn't working, it's likely because of an inoperative battery. It's easy to fix. Press the small tab on the side of the BMW key fob in order to release the valet key. You'll notice a small port close to the battery after the key fob is opened. The battery cover can be removed with a flat-headed screwdriver, or other similar tools. If you're in the need of a new BMW, or you want to purchase a used vehicle available near Decatur Be sure to browse our inventory at Tulley BMW of Nashua! Contact us today if you have any questions regarding our vehicles. We look forward to helping find the perfect vehicle for you! How to Replace the CR2450 Battery The BMW key fob is an important component of your driving experience, providing security and convenience with the click of one button. Over Click Home , however the battery in your BMW key fob will be damaged, and need to be replaced in order for it to function correctly. Knowing how to replace the BMW key fob battery can help you get back on the road swiftly and quickly. There are a variety of BMW keyfobs. However they all have the same type of battery that is a CR2450 coin-cell battery. This small, round battery is commonly found in most stores and can be purchased for less than a dollar per unit. In addition to being readily available, CR2450 batteries are also extremely easy to install and remove from the key fob. To replace the CR2450 batteries in your BMW find the tab that releases the valet made of metal inside the fob. After the metal valet has been removed, you can locate the tiny access port that conceals the key battery on the front of your fob. Remove the cover with a flat-headed screwdriver to reveal the battery. Once the old battery is removed, replace it with a brand new one with the positive side facing upwards and then rebuild the key fob. Test the key fob after the battery has been replaced to make sure it is still working properly. Consult your BMW dealer if your key fob is not responding. The older BMW models might require the key fob and the vehicle to be re-synchronized after changing the battery, however this is not typical for BMWs produced in recent years. It is possible to replace the battery inside an old BMW key fob, by opening the case and soldering the new battery in. However, this procedure should not be used because it could damage the internal circuitry. Tulley BMW Nashua recommends that you follow the instructions in this guide for changing the CR2450 batteries that are found on the majority of BMW keyfobs. This simple task can be completed in a matter of minutes and will help you get back on the road faster. How do I replace the CR2032 Side Indent Battery The CR2032 side indent battery that is included in the BMW series 1 key fob (and some other models) is easy to change. It is shaped like the shape of a nickel, and pops in and out of the slot easily. Use your fingers to take out the battery that was in use, and then replace it with a new one, being sure to be in line with the reverse. There are replacement batteries in a variety of auto parts stores and on the internet. If your BMW has a diamond key fob it is a bit more difficult. You cannot replace the CR2016 battery as it is different from a CR2032, CR2025 or a CR2032. You can test whether it works by shimming the CR2016 with aluminum foil that is conductive. If it isn't working, you'll have to cut off the plastic fob and expose the battery. Then, you can solder to a new battery. Most BMW key fobs have an access port that can be opened using the edge of a blade made of metal from another key or a flat screwdriver. If you don't have an edged metal blade, you can make use of the edge of pen. When you take off the cover, the CR2032 batteries will be visible. It's important to know that the CR2032 side indent battery isn't designed to be serviced, and you can't open the case. The battery can be recharged and will charge when the key is inserted in the ignition. It's a good idea to have a spare key available in the event that your remote is broken or lost. 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 team of committed experts who will assist you with any questions or concerns. We are looking forward to getting in touch with you!