It's The Complete Guide To BMW Battery Replacement Key BMW Battery Replacement - How to Do it Yourself

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

The battery is replaced by disconnecting the access port from the valet key. After that, you need to make sure that the new battery is registered.

How do I replace the battery?

A car battery is the most crucial element of a car and 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 complicated DIY task, and you could even save money by performing the task yourself. Knowing how much work is necessary to replace batteries is essential to success with your DIY project.

The first step is to determine which type of battery your BMW makes use of. There are three different types, each of which has its particular pros and cons being used. Lead-acid batteries are the most common since they are made up of sulfuric acids and lead. It produces electricity by an chemical reaction and then recharges itself using the power of your BMW. Other battery types in BMWs include Gel or Absorbent Glass Mat. These batteries operate similarly but require different installation and handling.

Once you've got a clear idea of which battery your BMW is using, it's time to replace the battery you've had for a while. The majority of auto parts stores have batteries that are compatible with the BMW model and use the correct battery. This will save you time. You could also look in your owner's manual which will likely contain the type of battery required for your specific 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 make use of a flat screwdriver or a valet key to access the lock-cylinder. Remove the liner from the fob and locate the battery. After taking the batteries out, clean the terminal connectors and then carefully reinstall them. Make sure to not tighten the brackets too much because this could damage the battery case. Connect the positive terminal prior to the negative terminal. Then, connect the upholstery in its original position.

Registering your new battery is also a good thing to do. This will allow the engine control module, also known as the DME, be aware that you have an updated battery and it won't get confused which one to charge. This will also reset the battery's age data to prevent overcharging the new BMW battery.

How to Replace a CR2032 battery

A lost key fob can be difficult, but fortunately, it's also fairly easy to replace the battery. It takes only some minutes and can be done at home.

The key fobs in BMW vehicles are powered by CR2032 batteries, which are a common watch battery. They are more expensive than other ones, but they can be found at any convenience store or auto parts center. You can replace the battery by removing the old one and replacing it with a new one. Then put the fob back on. This is a simple procedure that will allow you to get your car running in no time.

If you've been driving your BMW around the Johns Creek area, and you notice that your key fob isn't working, it's likely because of an inoperative battery. It's easy to fix.

Press the small tab on the back of the BMW key fob in order to release the valet key. When the key fob is open, you'll notice an access port that is small, where the battery is. The cover for the battery is removed using an screwdriver with a flat head, or a similar tools.

If you're in market for a new BMW, or you want to buy a used car to sell near Decatur Be sure to check out our inventory at Tulley BMW of Nashua! If you have any questions regarding our vehicles, contact us now. We're eager to help you to find the perfect car for you!

How to replace a CR2450 battery

The BMW key fob is an important component of your driving experience, providing security and convenience with the push of the button. Over time, however, the battery in your BMW keyfob can weaken, and it will need to be replaced in order for it to work properly. Understanding how to replace the BMW key fob will aid you in getting back on the road again quickly and quickly.

While there are several different types of BMW key fobs however, they all utilize the same type of battery, a CR2450 or CR2032 coin cell. This small round battery can be found in most shops for less than $1 per unit. In addition to being readily available, CR2450 batteries are also extremely easy to install and take off from the key fob.

To replace the CR2450 batteries in your BMW, locate the tab that releases the metal valet within the fob. When the metal valet keys is removed, search for an access port small on the front of the fob which conceals the key battery cover. With a flat screwdriver, take off the cover to reveal the battery. Insert a new battery with the positive side facing up, and then reassemble your key fob.

Test the key fob after the battery has been replaced to make sure it's still functioning properly. If the key fob still fails to respond, consult your BMW dealer for further troubleshooting assistance. Certain older BMW models require that the key fob is synchronized with the vehicle after replacing the battery. However this isn't the case for BMWs manufactured in recent years.


It is possible to replace the battery inside an old BMW key fob by opening the case and soldering a new one in. However, this method should not be attempted since it could damage the internal circuitry. Tulley BMW Nashua recommends that you follow the instructions in this guide for changing the CR2450 batteries on most BMW keyfobs. This simple task can be completed within a couple of minutes and can help you get back on the road quicker.

How to replace the CR2032 Side Indent Battery

The CR2032 side indent battery in the BMW series 1 key fob (and some other models) is simple to replace. The battery appears like a penny and can be easily inserted into the slot. Replace bmw replacement keys with the new one by using your fingers. Be sure to ensure that the polarity is in line. You can also find replacement batteries in various auto parts stores as well as online.

If your BMW has diamond key fobs, the process is slightly more complicated. It is not possible to replace the CR2016 battery because it is different from a CR2032, CR2025 or a CR2032. However, you can try shimming a CR2016 cell with some electrically conductive foil to determine whether it works. If you are unable to get it to work, you'll need to cut the fob part of the plastic to expose the battery and solder into the new one.

The small access port on the majority of BMW key fobs can be opened using the edge of a different key's metal blade or a screwdriver with a flat head. If you don't have a steel blade you can try using the tip of a pencil. Once you have removed the cover, you can see the CR2032 battery that's inside.

It is important to remember that the CR2032 side indent battery was not intended to be serviced, and it's impossible to open the case. The battery can be recharged, and charges when you insert the ignition key.

It's important to have a backup key in case you accidentally break your fob or lose it. If you need assistance programming your BMW remote or replacing the battery that is dead, contact us at Tulley BMW of Nashua. We have a team of experts ready to address any questions or concerns. We are looking forward to hearing from you!