What Is BMW Battery Replacement Key And Why Are We Talking About It? BMW Battery Replacement - How to Do it Yourself

If your BMW keyfob doesn't respond to the lock or unlock buttons, or has stopped working completely it could be time to get a new battery. It's a good thing that it's simple to replace the battery at home.

It is enough to find the access port hidden inside the valet key, remove it, and switch out the battery to a new one. Then you have to make sure that the new battery is registered.

How to replace a battery

A car battery is the most important component of any car, and it will need to be replaced at least once during the life of a driver. However replacing a BMW battery doesn't have to be the most difficult DIY project, and you may even save some money by doing the task yourself. The most important thing to do an effective DIY battery replacement is knowing the amount of work it will take.

It is essential to be aware of the type of battery your BMW makes use of. There are three types, each of which has its own pros and cons when in use. Lead-acid batteries are the most well-known because they contain lead and sulphuric acids. It generates electricity through a chemical reaction and then recharges itself using your BMW. Other battery types found in BMWs include Gel or Absorbent Glass Mat. These batteries have similar operation but require a different installation and handling.

Once you've got a good picture of the type of battery your BMW uses, it's time to replace the battery that was in use. Many auto parts stores have systems that match the BMW model and make with the right battery. This will help you save time. You could also look at your owner's manual, which will likely contain the battery type required for your particular model.

To replace the battery on a BMW key fob, shut off your vehicle and take out the blade made of metal from the valet key or flat screwdriver that can access the lock cylinder. Remove the liner from the fob and locate the battery. After you have removed the battery clean the terminal connections, and then reinstall them using careful. Make sure to not tighten the brackets too tightly because this could damage the battery case. Connect the positive terminal prior to the negative. Finally, connect the upholstery to its original place.

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 new battery has been installed and won't get confused about which one to charge. It will also reset the statistics on battery age which can avoid charging too much for your new BMW battery in Smyrna or Alpharetta.

How do I replace the CR2032 Battery

It's frustrating to have a dead key fob, however replacing the battery is easy. It takes only some minutes and can be completed at home.

bmw key cutting found in BMW vehicles use CR2032 batteries that are a standard watch battery. They're more expensive than other types of batteries, but they can be 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 you can place the fob back on. It's a simple process and you'll be able start your vehicle again in minutes.

If you've been driving your BMW around the Johns Creek area, and you notice that your key fob won't work, it's likely because of an inoperative battery. Fortunately, it's easy to repair!

First, you'll need press the small tab on the back of your BMW key fob to unlock the valet key that is inside. You'll notice a small port near the battery after the key fob has been opened. The battery cover can be removed with the flat-headed screwdriver or a similar tools.

If you're in the search for a brand new BMW, or you want to purchase a used car to sell near Decatur Be sure to check out our inventory at Tulley BMW of Nashua! Contact us today if you have any questions about our vehicles. We look forward to helping you find the ideal vehicle for your needs!

How do you replace a CR2450 battery

The BMW key fob provides security and convenience at the push of one button. As time passes the battery in your BMW key fob will become weaker, and will need to be replaced for it to work properly. Knowing how to replace the BMW key fob battery can help you get back on the road quickly and quickly.

There are a variety 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 stores and can be purchased for less than a dollar for each unit. In addition to being readily available, CR2450 batteries are also very simple 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. Once the metal valet is removed, locate the small access port that conceals the key battery on the front of your fob. Remove the cover using a flat-headed screwdriver, revealing the battery. Replace the battery with the positive side up, and then reassemble your key fob.

Test the key fob after the battery has been replaced to ensure it is still working properly. Contact your BMW dealer if the key fob is still not responding. Some older BMW models require that the key fob is synchronized with the vehicle after changing the battery. However, this is not the case for BMWs made in recent years.


Although it is possible to swap the battery in an older BMW key fob by cutting the case and putting to a new battery, this is not recommended since it can damage the internal circuit board. Instead Tulley BMW of Nashua recommends following the instructions in this guide to change the CR2450 battery for most BMW key fobs. This easy task can be done in just a few minutes and can help you get back on the road quicker.

How do I replace a CR2032 Side Indent Battery

It is easy to replace the CR2032 side-indent battery found in BMW series 1 keyfobs (and other models). The battery is shaped as the shape of a nickel, and pops in and out of the slot easily. Replace the battery that was used with the new one by using your fingers. Be sure to make sure that the polarity matches. You can find replacement batteries at many auto parts stores as well as on the internet.

If your BMW has a diamond key fob it is a bit more complex. The CR2016 battery inside this key is not the same as either a CR2032 or a CR2025, and you can't open the case to replace it. You can test whether it works by shimming a CR2016 with some conductive aluminum foil. If you are unable to get it to work, you will need to cut off the fob plastic part to expose the battery and solder in a new one.

The majority of BMW key fobs come with an access port which can be opened by using the edge of a metal blade from a different key or a flat screwdriver. If you don't have a metal blade you can try using the pencil's tip. Once you remove the cover and then open the cover, the CR2032 batteries are evident.

The CR2032 side-indent battery was not designed to be serviced and the case is not opened. The battery can be recharged, and is charged when you insert the ignition key.

It's a good idea to keep a spare key in case your remote gets lost or broken. Contact us at Tulley BMW Nashua if you require assistance programming your BMW remote or replacing a dead phone. We have a team of dedicated experts who can assist you with any questions or concerns. We are looking forward to hearing from you!