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 completely it may need a new battery. It's a good thing that it's simple to replace the battery at home.
The battery can be replaced by taking the access port off the valet key. Then, you must make sure to register the new battery.
How to Replace a Battery
A car battery is among the most important parts of any vehicle. It's likely to need to be changed at least once during the life of a driver. However, replacing a BMW battery isn't necessarily the most difficult DIY project, and you may even save cash by doing the task yourself. Knowing how much work is required to replace batteries is the first step to success with your DIY project.
The first step is to determine the type of battery your BMW uses. There are three types each with its own pros and cons when in use. Lead-acid batteries are the most popular because they contain sulfuric acids and lead. It produces electricity by an chemical reaction and recharges itself with the help of your BMW. Other battery types used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries perform the same way however they require a different installation and handling.
It's time to replace your old battery when you know which one your BMW makes use of. Most auto parts stores will have systems that match the BMW model and make with the correct battery. This will help you save time. You could also look at the owner's manual, which will likely include the battery type that is required for your specific model.
To change the battery in a BMW key fob, turn off your vehicle and remove the metal blade of the valet key or flat screwdriver that can access the lock cylinder. Remove the liner from the fob and locate the battery. After removing the batteries clean the terminal connectors then carefully reinstall. Be sure not to tighten the brackets too much, as this could crack the battery case. Connect the positive terminal first before connecting the negative. Finally, connect the upholstery back to its original location.
Registering your new battery is a good thing to do. This will inform the engine control module, also referred to as the DME to know that you have a new battery and it won't be unsure with which one to charge. This will also reset the battery's age statistics to ensure that you don't overcharge your brand new BMW battery.
How do you replace a CR2032 battery
It's frustrating to have a dead key fob, however replacing the battery is simple. It takes only a few minutes and can be done at home.
BMW key fobs make use of CR2032 watches batteries. They're slightly more expensive than other kinds of batteries, however they can be found at any convenience store or parts center. You can replace the battery by taking off the old one and replacing it with the new one. Then place the fob 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 a simple fix.
Press the small tab on the side of the BMW key fob to release the valet key. Once the key fob is opened, you'll see an access port in the middle where the battery is located. The battery cover can be removed using a flat-headed screwdriver, or any other similar tools.
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How do you replace the CR2450 Battery
The BMW key fob offers security and convenience at the push of the button. However, over time the battery in your BMW key fob may be damaged, and need to be replaced for it to function effectively. Knowing how to replace the BMW key fob can help you get on the road again quickly and easily.
While there are several different types of BMW key fobs, the majority of them utilize the same type of battery, a CR2450 or CR2032 coin cell. This small, round battery is commonly found in most stores and is available for less than a dollar for each unit. CR2450 batteries can be easily installed and removed 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 hides the key battery on the front of your fob. Utilizing a flat screwdriver remove the cover to expose the battery. Install a new battery with the positive side facing up and then reassemble your key fob.
After the new battery is installed, test the key fob to ensure that it continues to operate correctly. Consult your BMW dealer if the key fob isn't responding. Some 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.
It is possible to replace the battery on an old BMW key fob by opening the case and then soldering the new battery in. However, this procedure should not be used because it could harm the internal circuitry. Instead Tulley BMW of Nashua suggests following the steps in this article to change the CR2450 battery on the majority of BMW key fobs. This simple task can take only a few minutes to get you back on the road.
How to Replace the CR2032 Side Indent Battery
It is simple to replace the CR2032 side-indent batteries found in BMW series 1 keyfobs (and other models). This battery is shaped like a nickel and can be removed and put back into the slot easily. Use your fingers to take out the old battery, then replace it with a new one, making sure to match the opposite polarity. You can also find replacement batteries in numerous auto parts stores and on the internet.
If your BMW has diamond key fobs it is a bit more complicated. You can't replace the CR2016 battery as it is different from a CR2032, CR2025 or a CR2032. However you can try shifting a CR2016 cell using conductive foil to see if it will work. If it doesn't work, you'll need to cut off the plastic fob and expose the battery. Then, solder in a replacement.
Most BMW key fobs come with an access port which can be opened by using the edge of a metal blade from another key or a flat screwdriver. If you don't have an edged metal blade, you can use the tip of pen. After you've removed your cover, you'll be able to see the CR2032 battery that's inside.
It is important to remember that the CR2032 side indent battery wasn't intended to be serviced, and it's impossible to open the case. The battery can be recharged and will charge when the key is inserted into the ignition.
It's a good idea to have a spare key available in case your fob is lost or broken. If you need help programming your BMW remote or replacing batteries that are dead, call 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!