BMW Battery Replacement - How to Do it Yourself
If your BMW keyfob does not respond to the lock or unlock buttons, or has stopped working completely it could be time to get a new battery. Luckily, it's easy to replace the battery at home.
The battery can be replaced by simply taking the access port off the valet key. You must then make sure to register the new battery.
How to Replace a Battery

A car battery is the most important element of a car and will have to be replaced at least once during the life of a driver. However replacing the BMW battery does not have to be the most complicated DIY project, and you may even save some money by performing the task yourself. The key to a successful DIY battery replacement is knowing how much work it will take.
The first step is to determine the type of battery your BMW uses. There are three different types, each of which has its particular pros and cons in use. One of the most common is a lead-acid battery that is made up of sulfuric acid and lead. It produces electricity by an chemical reaction and recharges itself by using your BMW. Other types of batteries used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries operate similarly, but require different handling and installation.
Once you have a clear idea of the battery your BMW uses then it's time to replace the battery that was in use. Many auto parts stores have systems that match your BMW's make and model with the right battery, which will help you save time. You can also look up your owner's guide, which should list the battery type needed for your model.
To change the battery in a BMW key fob, shut off your vehicle and take out the blade made of metal from the valet key or flat screwdriver to reach the lock cylinder. Remove the liner from the fob and locate the battery. After removing the batteries clean the terminal connectors, then carefully reinstall. Don't tighten the brackets too much, since they could break the battery case. Connect the positive terminal first, before the negative terminal. Last, reconnect the upholstery to its normal position.
Registering the battery you have purchased is an excellent idea to do. If you do this the engine control module (known as the DME) will be aware that a new battery is installed and won't be confused about which one to charge. It also resets the battery age statistics which can stop overcharging of your brand new BMW battery in Smyrna or Alpharetta.
How to Replace the CR2032 Battery
It's a pain to lose your key fob, but changing the battery is simple. It only takes about a minute and can be done at home.
The key fobs that are used in BMW automobiles use CR2032 batteries that are a standard watch battery. They are more expensive than others but can be found at any convenience store or auto parts center. If you've got the new battery, simply take the old one off and replace it with the new one, and then put the cover back on. It's a simple process and you'll be able restart your vehicle in the blink of an eye.
If you've been driving your BMW around the Johns Creek area, and you notice that your key fob isn't working It's most likely due to a dead battery. It's easy to fix.
The first step is to press the small tab on the side of your BMW key fob to open the valet key that is inside. Once the key fob has been 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 tool.
If keys for bmw in the search for a brand new BMW or to buy a used car available near Decatur Make sure to browse our inventory at Tulley BMW of Nashua! Contact us today if you have any questions regarding our vehicles. We look forward to helping find the perfect vehicle for you!
How do you replace the CR2450 Battery
The BMW key fob is an important component of your driving experience, offering security and convenience with the push of a button. Over time, however the battery in your BMW keyfob can become weaker, and will require replacement in order for it to function correctly. Understanding how to replace the BMW key fob will help you get to the road again quickly and easily.
While there are several different kinds of BMW key fobs however, they all utilize the same type of battery, a CR2450 or CR2032 coin cell battery. The small round battery is sold in most stores for less than $1 per unit. In addition to being easily accessible, 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 opens the metal valet within the fob. After the metal valet key is removed, look for an access port small on the front of the fob which conceals the key battery cover. Take off the cover using an open-ended screwdriver to expose the battery. Once the old battery is removed, insert a new one with the positive side facing upwards and then reassemble the key fob.
After the new battery has been installed After the battery is installed, test the key fob to confirm that it continues to operate in a proper manner. If the key fob isn't responding, contact your BMW dealership for further troubleshooting assistance. Certain older BMW models require that the key fob be synchronized with the vehicle after changing the battery. However, this is not the case with BMWs produced in recent years.
It is possible to replace the battery inside an old BMW key fob by opening the case and then soldering a new one in. However, this method should not be used as it may damage the internal circuitry. Instead, Tulley BMW of Nashua recommends following the instructions in this article to change the CR2450 battery in the majority of BMW key fobs. This simple task can be completed in a matter of minutes and can help you get back on the road sooner.
How to Replace the CR2032 Side Indent Battery
It is simple to replace the CR2032 side-indent battery that is found in BMW series 1 keyfobs (and other models). This battery looks like a penny and can be easily inserted into the slot. Replace the old battery with the new one using your fingers. Make sure to make sure that the polarity matches. You can find replacement batteries at many auto parts stores as well as on the internet.
The procedure is slightly different depending on whether your BMW has the "diamond key fob". You cannot replace the CR2016 battery because it is different from a CR2032, CR2025 or a CR2032. However, you can try shimming the CR2016 cell with conductive foil to see if it will work. 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 into a new one.
The tiny access port found on many BMW key fobs can be opened with the edge of another key's blade made of metal or a screwdriver that is flat. If you don't have a steel 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 are evident.
It's important to note that the CR2032 side indent battery wasn't intended to be serviced, and you can't open the case. This battery is rechargeable and charges when the key is placed in the ignition.
It's a good idea keep a spare key in the event that your remote is lost or broken. Contact us at Tulley BMW Nashua if you need assistance programming your BMW remote or replacing a dead cell. We have a dedicated team of experts ready to address any questions or concerns. We are looking forward to having a conversation with you!