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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 probably needs a new battery. It's simple to replace the battery on your own. It is enough to find the access port hidden inside the valet key, take it out, it, and then replace the battery to a new one. You will then need to register the new battery. How do I replace the battery? A car battery is among the most vital components of any vehicle and will have to be replaced at least once in a driver's lifetime. It's not difficult to replace the BMW battery yourself and you could even save money. Knowing how much work necessary to replace a battery is the key to an effective DIY project. It is essential to know the type of battery your BMW makes use of. There are three types each with its own pros and cons when used. One of the most common is a lead-acid battery which contains lead and sulphuric acid. It generates electricity through chemical reactions and then recharges itself using the power of your BMW. Other types of batteries used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries function similarly but require different handling and installation. Once you've got a good picture of the type of battery your BMW is using and you know the battery's name, it's time to replace the old one. Many auto parts stores have batteries that are compatible with the BMW model and use the correct battery. This will save you time. You can also try looking in your owner's manual which will likely include the battery type required for your particular model. To change the battery on a BMW keyfob, turn your vehicle off and remove the blade made of metal from the valet key. You can also use a flat screwdriver or a valet key to access the lock-cylinder. Remove the liner from the fob and locate the battery. After removing the battery, clean the terminal connections and then reinstall them using attention. Be careful not to tighten the brackets too tightly and this could cause cracks in the battery case. Connect the positive terminal prior to the negative terminal. Last, reconnect the upholstery in its original position. It's recommended to register your new battery. If you do this, the engine control module (known as the DME) will know that a new battery has been installed and won't get confused about which one to charge. This will also reset the battery's statistics regarding age to prevent overcharging the new BMW battery. How to Replace a CR2032 battery It's frustrating to lose a key fob, but replacing the battery is easy. It only takes some minutes and can be done right at home. BMW key fobs make use of CR2032 watches batteries. These batteries are a bit more expensive than other ones, but they can be found at any convenience store or auto parts store. When you've purchased the new battery, simply remove the old one, fit in the new one, and put the cover of the fob back on. It's a simple process and you'll be able to start your car in the blink of an eye. A dead battery is likely to be the reason for your BMW key fob not working when you're driving around Johns Creek. It's not difficult to repair! Press the small tab located on the back of the BMW key fob to open the valet key. You'll notice a small port close to the battery after the key fob has been opened. The cover for the battery is removed using the flat-headed screwdriver or any other similar tools. If you're in need of a new BMW, or you want to purchase a used vehicle to sell near Decatur Be sure to check out our inventory at Tulley BMW of Nashua! Contact us today if have any questions regarding our vehicles. We look forward to helping you find the perfect vehicle for your requirements! How do you replace a CR2450 battery The BMW key fob offers security and convenience with the push of one button. However in time the battery inside the BMW key fob can become weak and need replacement in order to function properly. Knowing how to replace the BMW key fob can aid you in getting back on the road again swiftly and easily. There are bmw spare key replacement of BMW keyfobs. However they all have the same kind of battery that is a CR2450 coin cell battery. This small round battery is available in most stores for less than $1 per unit. In addition to being readily available, CR2450 batteries are also very simple to install and take off from the key fob. To replace the CR2450 batteries in your BMW, locate the tab that releases the valet made of metal inside the fob. Once the metal valet has been removed, look for the small 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. After the old battery has been removed, insert a new one with the positive side facing up and then rebuild the key fob. After the new battery has been installed After the battery is installed, test the key fob to make sure that it is operating properly. Check with your BMW dealership if the key fob is still not responding. bmw spare key replacement require that the key fob be synchronized with the vehicle after replacing the battery. However, this is not the case with BMWs produced in recent years. It is possible to replace the battery in an old BMW key fob by opening the case and soldering the new battery in. However, this method should not be used because it could damage the internal circuitry. Instead, Tulley BMW of Nashua suggests following the instructions in this guide to replace the CR2450 battery in the majority of BMW key fobs. This easy task can be done within a couple of minutes and will allow you to get back on the road sooner. How do I replace a CR2032 Side Indent Battery It is easy to replace the CR2032 side-indent battery that is found in BMW series 1 keyfobs (and other models). It appears like a penny and slides into the slot easily. Replace the battery that was used with the new one using your fingers. Be sure to ensure that the polarity is in line. You can also find replacement batteries at many auto parts stores and online. The procedure is a bit different in the event that your BMW has an “diamond key fob”. You cannot replace the CR2016 battery because it is different from a CR2032, CR2025 or a CR2032. You can test whether it works by shimming the CR2016 using conductive aluminum foil. If bmw keys replacement doesn't work, you'll need to cut off the plastic fob and expose the battery. Then, you can solder in a replacement. The small access port found on many BMW key fobs can be opened with the edge of another key's metal blade or a screwdriver that is flat. If you don't have a metal blade, you can try using the tip of a pencil. After you have removed the cover and then open the cover, the CR2032 batteries will be evident. It's important to know that the CR2032 side indent battery wasn't intended to be serviced, and you aren't able to open the case. This battery is rechargeable and charges when the key is inserted into the ignition. It's important to have an extra key in case you break your key or lose it somewhere. 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 dedicated team of experts who are available to address your questions or concerns. We look forward to hearing from you!