BMW Battery Replacement - How to Do it Yourself

If your BMW key fob isn't responding to the lock and unlock buttons, or isn't working at all it may need a new battery. It's easy to replace the battery yourself.

The battery can be replaced by simply taking the access port off the valet key. You will then need to make sure to register the new battery.

How to Replace a Battery

A car battery is the most important element of a car, and it will need to be replaced at least once during the course of a driver's career. However, replacing a BMW battery isn't necessarily the most difficult DIY project, and you can even save money by doing it yourself. Knowing how much work needed to replace batteries is essential to success with your DIY project.

The first step is to determine which type of battery your BMW uses. There are three kinds of batteries, each with their own pros and cons. One of the most popular is a lead-acid batteries, that is made up of lead and sulphuric acid. It produces electricity through a chemical reaction, and it recharges itself when you drive your BMW. Other battery types that are used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries have similar operation but require a different installation and handling.

Once you've got a good idea of which battery your BMW has, it's time to replace the battery that was in use. The majority of auto parts stores have systems that match your BMW's make and model with the appropriate battery, which can save you time. You can also check the owner's manual that will list the type of battery required for your particular model.

To replace the battery on a BMW keyfob, turn the vehicle off and take the metal blade 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 you have removed the battery clean the terminal connections, and then put them back in place with attention. Make sure to not tighten the brackets too much and this could cause cracks in the battery case. Connect the positive terminal prior to the negative. Then, connect the upholstery in its original position.

Registering your new battery is an excellent thing to do. This will inform the engine control module, also referred to as the DME to know that you've got a new battery and it won't get confused which one to charge. This will also reset the battery's age data to avoid charging too much for your new BMW battery.

How do I replace the CR2032 Battery

It's a pain to have a dead key fob, however replacing the battery is easy. It takes just some minutes and can be done right at home.

The key fobs that are used in BMW vehicles use CR2032 batteries, which are a common watch battery. They're slightly more expensive than other kinds of batteries, however they can be found at any convenience retailer or parts store. Once you have an entirely new bmw key cost battery, simply take the old one off and replace it with the new one, and put the cover of the fob back on. This is a simple procedure that will allow you to start your car again within a matter of minutes.

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

First, you'll need to press the small tab on the back of your BMW key fob to open the valet key that is inside. Once the key fob is opened, you'll see an access port that is small, in which the battery is. The battery cover can be removed using a flat-headed screwdriver, or a similar tool.

If you're in search of an all-new BMW or a used car near Decatur, then be sure to check our inventory at Tulley BMW Nashua. Contact us today if have any questions regarding our vehicles. We're eager to help you to find the perfect car for you!

How to Replace a CR2450 battery

The BMW key fob is a convenient device that provides security and convenience at the push of the button. However in time the battery in your BMW key fob can become weak and need replacement in order to function properly. Knowing how to replace the BMW key fob battery will allow you to get back on the road swiftly and quickly.

There are many different types of BMW keyfobs. However, they all use the same kind of battery that is a coin cell CR2450 battery. This small, round battery can be typically found in a majority of shops and can be bought for less than a dollar for each unit. In addition to being readily available, CR2450 batteries are also very easy to install and take off from the key fob.

To replace the CR2450 battery in your BMW first, look for the tab on the key fob that releases the metal valet key inside the fob. When the metal valet keys is removed, search for an access port that is small on the front of the fob that hides the key battery cover. Using a flat screwdriver, take off the cover to reveal the battery. After the old battery has been removed, insert a new one with the positive side facing upwards and then put it back together.

Test the key fob after the battery is replaced to confirm that it's still functioning properly. Consult your BMW dealer if your key fob is not responding. The older BMW models may require the key fob and vehicle to be re-synced after changing the battery, however this isn't the norm for BMWs produced in recent years.

Although it is possible to swap the battery in an older bmw keys not working key fob by removing the case and soldering to a new battery, this is not recommended since it could damage the internal circuit board. Instead, Tulley BMW of Nashua recommends following the steps in this guide to replace the CR2450 battery on the majority of BMW key fobs. This easy task can be done in a matter of minutes and will allow you to get back on the road faster.

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 appears like a penny and slides into the slot easily. Replace the old battery with the new one by using your fingers. Make sure you ensure that the polarity is in line. You can find replacement batteries at many auto parts stores and on the internet.

The procedure is slightly different depending on whether your bmw car keys includes a "diamond key fob". The CR2016 battery inside the key isn't identical to a CR2032 or a CR2025, and you can't open the case to replace it. You can test if it functions by shimming a CR2016 with some aluminum foil that is conductive. If it doesn't work, you'll need to cut off the plastic fob and expose the battery. Then, you can solder to a new battery.

The tiny access port found on many bmw replacment key key fobs is accessible with the edge of a different key's metal blade or flat-headed screwdriver. If you don't own a metal blade, you can try using the pencil's tip. Once you remove the cover and the CR2032 batteries will be clearly visible.

The CR2032 side-indent battery was not intended to be serviced, and the case cannot be opened. This battery is rechargeable and charges when the key is placed in the ignition.

It's essential to have an additional key in the event that you accidentally break your fob or lose it somewhere. Contact us at Tulley BMW Nashua if you need assistance programming your BMW remote, or replacing a dead cell. We have a team of experts who are available to answer any questions or concerns. We look forward to hearing from you!