What BMW Battery Replacement Key Experts Want You To Be Educated 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. It's not difficult to replace the battery at home.

The battery can be replaced by taking the access port off the valet key. Then, you must register the replacement battery.

How to Replace the Battery

A car battery is among the most vital components of any vehicle and will have to be replaced at least once in the life of a driver. However, replacing the BMW battery doesn't have to be the most complicated do-it-yourself project, and you can even save money by doing the task yourself. The most important thing to do success with a DIY battery replacement is knowing the amount of work the job actually requires.


It is crucial to be aware of the type of battery that your BMW makes use of. There are three types of batteries each with their own pros and cons. One of the most common is a lead-acid battery which is composed of sulfuric acid and lead. It produces electricity through an chemical reaction and it recharges itself whenever you drive your BMW. Other types of batteries that are that are used in BMWs are Gel or Absorbent Glass Mat (AGM). These batteries function similarly but require different handling and installation.

It's time to replace your old battery when you know which one your BMW uses. Many auto parts stores have systems in place to match your BMW's make and model with the appropriate battery, which could save you some time. You can also refer to your owner's guide that will list the battery type needed for your specific model.

To replace the battery on a BMW key fob, shut off your vehicle and take out the metal blade of the valet key or flat screwdriver to access the lock cylinder. Then, take off the liner of the fob and locate the battery. After taking replacement bmw key cost off clean the terminal connections, and then reinstall them using careful. Do not tighten brackets too much, since they could break the battery case. Connect the positive first before connecting the negative. Last, reconnect the upholstery in its normal position.

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

How to Replace a CR2032 battery

A dead key fob is frustrating, but luckily, it's also quite simple to replace the battery. It only takes about a minute and can be done at home.

BMW key fobs make use of CR2032 watches batteries. These batteries are a bit more expensive than other ones, but they can be found at any convenience store or auto parts center. You can change the battery by removing the old one and replacing it with a new one. Then, put the fob back on. It's a quick process, and you'll be able restart your vehicle in no time.

A dead battery is likely to be the cause of your BMW key fob not working while you're driving around Johns Creek. It's simple to fix.

Press the small tab on the side of the BMW key fob in order to release the valet key. Once the key fob is open, you'll notice an access port that is small, in which the battery is. You can use a flat screwdriver or similar tool to take off the cover of the battery, and then replace it with a fresh one.

So if you're in the search for a brand new BMW or to purchase a used vehicle for sale near Decatur Be sure to check out our inventory at Tulley BMW of Nashua! If you have any concerns about our vehicles, please contact us today. We're eager to help you find the perfect car for your requirements!

How do you replace a CR2450 battery

The BMW key fob offers convenience and security with the push of one button. However in time, the battery inside the BMW key fob will be damaged and require replacement to ensure that it functions properly. Knowing how to replace the BMW key fob battery will allow you to get back on the road quickly and easily.

There are many different kinds of BMW key fobs, the majority of them use the same battery type, a CR2450 or CR2032 coin cell battery. This small, round battery is commonly found in most shops and can be bought for less than a dollar for each unit. CR2450 batteries can be easily installed and removed from the key fob.

To replace the CR2450 batteries in your BMW find the tab that releases the metal valet inside the fob. Once the metal valet is removed, look for the small access port that conceals the key battery on the front of the fob. Take off the cover using a flat-headed screwdriver to reveal the battery. After the old battery has been removed, replace it with a new one with the positive side facing up and then reassemble the key fob.

Test the key fob after the battery has been replaced to ensure it's still functioning properly. If the key fob does not respond, contact your BMW dealer for further assistance. Some older BMW models require that the key fob be re-synchronized with the vehicle after changing the battery. However this isn't the case for BMWs made in recent years.

Although it is possible to replace the battery on an older BMW key fob by cutting open the case and putting into a new battery this procedure is not recommended because it can damage the internal circuit board. Tulley BMW Nashua suggests that you follow the steps in this guide for changing the CR2450 batteries on most BMW keyfobs. This simple task will take you only a few minutes to will get you back on the road.

How do I 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 is shaped like the shape of a nickel, and can be removed and put back into the slot very easily. Simply use your fingers to take out the old battery, and then replace it with a brand new one, being sure to match the polarity. You can find replacement batteries in many auto parts stores as well as on the internet.

If your BMW has a diamond key fob, the process is slightly more complex. You cannot replace the CR2016 battery since it's different from a CR2032, CR2025 or a CR2032. However you can try shifting a CR2016 cell with conductor foil to see if it will work. If it fails to work, you will have to cut off the fob part of the plastic to expose the battery and solder into the new one.

The tiny access port on most BMW key fobs can be opened with the edge of a different key's metal blade or screwdriver that is flat. If you don't own an edged metal blade, you can use the edge of a pen. Once you have removed the cover, you can see the CR2032 battery that's inside.

The CR2032 side-indent batteries were not designed to be serviced and the case cannot be opened. The battery can be recharged, and charges when you insert the ignition key.

It's a good idea to have a spare key in case your fob is broken or lost. If you need assistance programming your BMW remote or replacing a dead battery, contact us at Tulley BMW of Nashua. We have a team of dedicated experts who can help you with any questions or concerns. We look forward having a conversation with you!