7 Things You've Never Knew About BMW Battery Replacement Key
BMW Battery Replacement - How to Do it Yourself
If your BMW key fob isn't responding to your lock and unlock buttons or isn't working at all it may need an upgrade to the battery. It's simple to replace the battery on your own.
The battery can be replaced by simply removing the access port from the valet key. You will then need to make sure to register the new battery.
How to replace the battery
A car battery is among the most important parts of any vehicle. It's likely to have to be replaced at least once during the lifetime of a driver. It's not difficult to replace the BMW battery yourself, and you may even save money. The key to an effective DIY battery replacement is knowing the amount of work the job actually requires.
It is important to know the type of battery that your BMW makes use of. There are three kinds of batteries each with its own pros and con. One of the most common is a lead-acid batteries, that is made up of lead and sulphuric acid. It produces electricity by an chemical reaction and then recharges itself using your BMW. Other types of batteries in BMWs include Gel or Absorbent Glass Mat. These batteries function similarly but require different handling and installation.
Once you have a clear picture of the type of battery your BMW is using and you know the battery's name, it's time to replace the battery that was in use. Most auto parts retailers will have systems in place to match your BMW's model and model with the correct battery, which can help you save time. You could also look in your owner's manual which will likely list the type of battery required for your particular model.
To replace the battery in a BMW key fob, turn off your car and then remove the metal blade of the valet key or a flat screwdriver to reach the lock cylinder. Then, you can remove the liner of the fob and locate the battery. After removing the batteries, clean the terminal connectors, then carefully reinstall them. Make sure to not put too much tension on the brackets, as this could crack the battery case. Connect the positive terminal first, before the negative terminal. Then, reconnect the upholstery back to its original position.
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 battery has been installed and won't be confused as to which one to charge. This will also reset the battery's age data to ensure that you don't overcharge your brand new BMW battery.
How do I replace the CR2032 Battery
A lost key fob can be an inconvenience, but it's also pretty easy to replace the battery. It takes only about a minute and can be done at home.
BMW key fobs use CR2032 watches batteries. They're slightly more expensive than other types of batteries, however you can easily find them at any convenience store or parts center. If you've got an entirely new battery, you can simply remove the old one, fit in the new one, and put the cover of the fob back on. This is a simple process that will allow you to get your car running in a matter of minutes.
A dead battery could be the reason behind your BMW key fob not functioning while you are driving around Johns Creek. Fortunately, it's easy to fix!
The first step is to press the small tab on the side of your BMW key fob to unlock the inside valet key. You'll see a small port near the battery after the key fob is opened. The battery cover can be removed using the flat-headed screwdriver or a similar tools.
If you're in the market for a new BMW or to purchase a used vehicle available near Decatur, be sure to check out our inventory at Tulley BMW of Nashua! If you have any questions about our vehicles, please contact us today. We look forward to helping to find the perfect car for you!

How to Replace the CR2450 Battery
The BMW key fob offers convenience and security with the push of the button. Over time, however, the battery in your BMW key fob may be damaged, and require replacement in order for it to function properly. Knowing how to replace the BMW key fob will aid you in getting back to the road again quickly and easily.
While there are new bmw key of BMW key fobs most use the same battery type that is a CR2450 or CR2032 coin cell. The small round battery is available in most stores for less than $1 per unit. In addition to being easily accessible, CR2450 batteries are also very simple to install and take off from the key fob.
To replace the CR2450 battery in your BMW, first look for the key fob's tab that releases the metal valet key within the fob. Once the metal valet key is removed, search for an access port small on the front of the fob which conceals the key battery cover. Utilizing a flat screwdriver remove the cover to expose the battery. Insert a new battery with the positive side facing upwards, and then reassemble your key fob.
Test the key fob after the battery has been replaced to make sure it's working as intended. If the key fob still fails to respond, consult your BMW dealership for further troubleshooting assistance. The older BMW models might require the key fob and the vehicle to be re-synchronized after changing the battery, however this is not the norm for BMWs made in recent years.
Although it is possible to replace the battery in an older BMW key fob by cutting the case and soldering in a new battery, this is not recommended since it can damage the internal circuit board. Tulley BMW Nashua suggests that you follow the steps in this guide for changing the CR2450 batteries that are found on the majority of BMW keyfobs. This simple task will take only a few minutes to will get you back on the road.
How do you replace a 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). It is shaped like a nickel and is able to pop in and out of the slot very easily. Replace the battery that was used with the new one by using your fingers. Make sure you ensure that the polarity is in line. You can also find replacement batteries at many auto parts stores and on the internet.
If your BMW has an engraved key fob, the process is slightly more difficult. It is not possible to replace the CR2016 battery as it is different from a CR2032, CR2025 or a CR2032. You can test whether it works by shimming the CR2016 with aluminum foil that is conductive. If it fails, you'll need to cut off the plastic fob to expose the battery. Then solder into a replacement.
The tiny access port on most BMW key fobs is accessible with the edge of another key's metal blade or screwdriver that is flat. If you don't have a steel blade you can try using the pencil's tip. Once you remove the cover, the CR2032 batteries will be 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. The battery is rechargeable and charges when you insert the ignition key.
It's essential to have an extra key in case you break your key or lose it somewhere. Contact us at Tulley BMW Nashua if you require assistance programming your BMW remote, or replacing a dead cell. We have a team of committed experts who can help you with any questions or concerns. We look forward to hearing from you!