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BMW Battery Replacement – How to Do it Yourself If your BMW keyfob does not respond to the lock or unlock buttons, or if it isn't working at all, then you may need a new battery. It's not difficult to replace the battery at home. The battery can be replaced by simply removing the access port from the valet key. You will then need to make sure to register the new battery. How to replace a battery A car battery is among the most crucial components of any vehicle. It will need to be changed at least once during the life of a driver. It's not difficult to replace the BMW battery yourself, and you may even save money. Knowing how much work is required to replace a battery is the key to success with your DIY project. It is crucial to know the type of battery your BMW utilizes. There are three kinds of batteries, each with their own pros and cons. One of the most common is a lead-acid batteries, that is made up of sulfuric acid and lead. It generates electricity by an chemical reaction and recharges itself when you drive your BMW. Other battery types 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 when you know which one your BMW uses. The majority of auto parts stores have a system that matches the BMW model and make with the right battery. This will save you time. You can also check the owner's manual, which should list the battery type needed for your particular model. To change the battery on a BMW keyfob, switch your vehicle off and take the blade made of metal from the valet key. You can also employ a flat screwdriver, or valet keys to gain access to the lock-cylinder. Remove the liner from the fob and locate the battery. After removing the batteries clean the terminal connectors and then carefully reinstall them. Do not tighten brackets too much, as they could break the battery case. Connect the positive terminal before the negative terminal. Then, connect the upholstery to its normal position. Registering your new battery is also an excellent thing to do. This will allow the engine control module, also known as the DME, be aware that you have new batteries and it won't be confused which one to charge. This will also reset the battery's age data to avoid charging too much for your new BMW battery. How to Replace a CR2032 battery A dead key fob is difficult, but fortunately, it's also quite simple to replace the battery. It only takes about a minute and can be done at home. BMW key fobs make use of CR2032 watches batteries. They're more expensive than other kinds of batteries, however they are easily found at any convenience store or parts center. 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 process that will allow you to start your car again in a matter of minutes. A dead battery is likely to be the cause of your BMW key fob not functioning while you're driving around Johns Creek. It's a good thing that it's simple to fix! The first step is to press the small tab on the back of your BMW key fob to open the valet key that is inside. There will be a small port close to the battery once the key fob is opened. The battery cover can be removed using a flat-headed screwdriver, or a similar tool. If you're looking to buy a brand new BMW or a used vehicle near Decatur Be sure to check our inventory at Tulley BMW Nashua. If you have any concerns about our vehicles, please contact us today. bmw car key replacement looking forward to helping you find the ideal vehicle for your needs! How do you replace the CR2450 Battery The BMW key fob is a convenient device that provides convenience and security with the push of one button. However, over time the battery in your BMW key fob may become weaker, and will require replacement in order for it to function effectively. Understanding how to replace the BMW key fob can help you get to the road again quickly and easily. Although there are a variety of types of BMW key fobs, the majority of them utilize the same type of battery, a CR2450 or CR2032 coin cell battery. This small, round battery can be commonly found in most shops and can be bought for less than a dollar for each 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 which opens the metal valet key within the fob. When the metal valet keys is removed, look for an access port small on the front of the fob that conceals the key battery cover. Using a flat screwdriver, take off the cover to expose the battery. After the old battery has been removed, replace it with a brand new one with the positive side facing upwards and then reassemble the key fob. Test the key fob after the battery has been replaced to ensure it's working as intended. Check with your BMW dealer if your key fob is not responding. Older BMW models might require the key fob and the vehicle to be re-synced after changing the battery, but this is not typical for BMWs produced in recent years. It is possible to replace the battery on an old BMW key fob by opening the case and soldering the new battery in. However, this method should not be used as it may cause damage to the internal circuitry. Instead, Tulley BMW of Nashua suggests following the steps in this guide to replace the CR2450 battery in the majority of BMW key fobs. This easy task can be done in a matter of minutes and will help you get back on the road quicker. How do you 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 easy to replace. This battery is shaped like the shape of a nickel, and can be removed and put back into the slot very easily. Simply use your fingers to remove the old battery, and then replace it with a brand new one, making sure that it match the reverse. You can also find replacement batteries at numerous auto parts stores and on the internet. If your BMW has a diamond key fob it is a bit more complex. The CR2016 battery inside this key isn't the same as either a CR2032 or a CR2025 it is not possible to open the case to replace it. However you can try shifting a CR2016 cell with electrically conductive foil to determine whether it works. If you can't get it to work, you will need to cut the fob plastic piece to expose the battery and then solder in the new one. Most BMW key fobs have an access port which can be opened by using the edge of a blade made of metal from a different key or a flat screwdriver. If you don't own a metal blade or a flat screwdriver, you can use the tip of a pencil. After you have removed the cover and then open the cover, the CR2032 batteries will be evident. It is important to remember that the CR2032 side indent battery wasn't designed to be serviced, and you can't open the case. The battery is rechargeable and will charge when you insert the ignition key. It's a good idea to have a spare key in the event that your remote is broken or lost. Contact us at Tulley BMW Nashua if you need help programming your BMW remote, or replacing a dead phone. We have a dedicated team of experts who are available to address your questions or concerns. We look forward getting in touch with you!