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BMW Battery Replacement – How to Do it Yourself If your BMW keyfob does not respond to the lock and unlock buttons, or if it has stopped working entirely and you're in need of a 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. You must then make sure to register the new battery. How to replace the battery A car battery is the most vital element of a car and will have to be replaced at least once in the course of a driver's career. However, replacing the BMW battery does not have to be the most complicated DIY task, and you could even save some cash by doing it yourself. Knowing the amount of work necessary to replace batteries is essential to an effective DIY project. The first step is to determine which type of battery your BMW uses. There are three kinds of batteries, each of which has its own pros and cons being used. Lead-acid batteries are the most popular since they are made up of sulfuric and lead. It produces electricity through an chemical reaction and it recharges itself whenever you drive your BMW. Other types of batteries used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries are similar in operation however they require different handling and installation. It's time to replace your old battery once you know which one your BMW makes use of. Most auto parts stores will have batteries that are compatible with the BMW model and make with the correct battery. This will help you save time. You can also look up your owner's manual which will include the battery type needed for your model. To replace the battery on the BMW key fob, switch off your vehicle and take out the metal blade of the valet key or a flat screwdriver to reach the lock cylinder. Then, take off the fob's liner and locate the battery. After you have removed the battery clean the terminal connections and then reinstall them using care. Don't tighten brackets too tight, as this can crack the battery case. Connect the positive first, then the negative. Then, connect the upholstery to its normal position. It's recommended to register your new battery. If you do this, the engine control module (known as the DME) will be aware that the 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 new BMW battery. How do I replace the CR2032 Battery A dead key fob is frustrating, but luckily, it's also pretty easy to replace the battery. It takes only some minutes and can be done right at home. BMW key fobs are powered by CR2032 watches batteries. They're more expensive than other types of batteries, but they can be found at any convenience store or parts center. When you've purchased the new battery, you'll need to remove the old one, fit in the new one, and then put the fob cover back on. This is a straightforward process that will allow you to get your car running in a matter of minutes. A dead battery could be the reason for your BMW key fob not working while you're driving around Johns Creek. It's not difficult to repair! The first step is to press the small tab on the back of your BMW key fob to unlock the inside valet key. You'll see a small port close to the battery once the key fob has been opened. You can make use of a flat screwdriver, or similar tool to remove the battery cover, then you can replace it with a brand new one. If you're in the need of a new BMW, or you want to buy a used car to sell near Decatur Make sure to check out our inventory at Tulley BMW of Nashua! Contact us today if have any questions regarding our vehicles. We're eager to help you find the perfect vehicle for your requirements! How to Replace a CR2450 battery The BMW key fob is an important component of your driving experience. It provides security and convenience with the click of a button. However in time the battery in the BMW key fob can be damaged and require replacement in order to function properly. Knowing how to replace the BMW key fob battery will allow you to get back on the road quickly and easily. There are many different types of BMW keyfobs. However, they all use the same kind of battery, which is a CR2450 coin-cell battery. This small, round battery can be typically found in a majority of shops and can be bought 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 battery in your BMW first, locate the tab on the key fob that opens the valet key made of metal inside the fob. Once new bmw key is removed, search for an access port that is small on the front of the fob which conceals the key battery cover. Take off the cover using an open-ended screwdriver to expose the battery. Once the old battery is removed, replace it with a new one with the positive side facing upwards and then put it back together. After the new battery has been installed, test the key fob to ensure that it continues to operate correctly. If the key fob isn't responding, contact your BMW dealer for further assistance. Certain older BMW models require that the key fob be synchronized with the vehicle after replacing the battery. However this isn't the case with BMWs produced in recent years. While it is possible to replace the battery on an older BMW key fob by cutting the case and soldering to a new battery, this procedure is not recommended since it can damage the internal circuit board. Instead, Tulley BMW of Nashua suggests following the instructions in this article to change the CR2450 battery in the majority of BMW key fobs. This simple task can be completed within a couple of minutes and will allow you to get back on the road sooner. How to replace the CR2032 Side Indent Battery The CR2032 side indent battery in the BMW series 1 key fob (and other models) is easy to change. It is shaped like a nickel, and it is able to pop in and out of the slot very easily. Replace the old battery with the new one by using your fingers. Make sure to match up the polarity. You can also find replacement batteries at various auto parts stores as well as on the internet. If your BMW has a diamond key fob the procedure is slightly more difficult. You cannot replace the CR2016 battery since it's different from a CR2032, CR2025 or a CR2032. You can test whether it works by rotating a CR2016 with some aluminum foil that conducts electricity. If it isn't working, you'll have to cut off the plastic fob to expose the battery. Then, you can solder to a new battery. The small access port found on many BMW key fobs can be opened with the edge of a different key's blade made of metal or a screwdriver with a flat head. If you don't have a metal blade you can use the tip of a pen. Once you remove the cover and then open the cover, the CR2032 batteries will be clearly visible. It is important to remember that the CR2032 side indent battery was not designed to be serviced and you aren't able to open the case. It is rechargeable and will charge when the key is inserted into the ignition. It's important to have a backup key in case you break your fob or lose it. If you require assistance programming your BMW remote or replacing the battery that is dead, contact us at Tulley BMW of Nashua. We have a group of dedicated experts who can assist you with any questions or concerns. We are looking forward to hearing from you!