The History Of Key Fob Repair Key Fob Repair: Replacing the Battery

The buttons on key fobs can get damaged and stop functioning properly after being jostled in pockets and purses. Replacing the small battery, which a majority of car fobs come with in a snap-out case can sometimes fix this problem.

If the contacts on your key fob have damaged, a replacement may not be sufficient to bring it back to life. It's a good thing that this is an easy fix you can attempt at home:

Replace the Battery

It could be time to change the battery in your key fob if it is slow or takes longer to unlock or lock your car than it does on a regular. The replacement of a key fob's battery is among those easy tasks that you can perform yourself. It's also a cheap solution that will save you a trip to an expert locksmith or dealer.


The majority of key fobs require a coin-style battery (CR2032 or similar) which can be found at any general store or home improvement store or auto parts store. Key fobs come with slots for these batteries and it is simple to replace the battery. Depending on the manufacturer, you may require an instrument such as a screwdriver to open the cover of the compartment for batteries.

If your key fob comes with clips that hold the batteries in place, gently take them off them using your fingers or with non-metallic tools. Install the new battery, making sure to install it correctly. Note its orientation when you remove the old one. It is important to avoid touching the batteries' flat surfaces as finger marks can shorten their lifespan.

Close the case of the key fob and test its functionality by pressing the button. If the key fob doesn't function, you may have to open it again and verify that the battery is correctly inserted.

You may also find that replacing the battery isn't enough to resolve the issue. This could be caused by physical trauma or electrical damage. In this case, you'll need to bring your key fob to the dealership or service center to be repaired. However, before doing this, you should be aware of four issues that a replacement battery won't solve. It is crucial to be aware of these problems so that you're capable of contacting an expert technician in the event of need. You should also read about how to repair a defective key fob transmitter to learn more about why it may not be working correctly.

Clean the Contacts

It is essential to keep your keys clean in order to maintain their functionality and longevity. Over time, natural oils from your hands and pockets can accumulate on the buttons and crevices and even cause keys to stop working completely. It's not difficult to fix, though - all you need is ruby alcohol and a cotton swab.

The key fob must be opened first by gently prying the battery away with the help of a screwdriver or a coin. Note the nature of the battery (negative and positive side) so that you can reinstall it correctly.

Then, moisten a cotton small or swab with isopropyl (rubbing) alcohol and begin cleaning away the dirt from all buttons on the fob and the surrounding areas. Be sure to pay particular attention to the battery's contacts, and that they are clean. Once you're done cleaning the fob, let it and its components completely dry.

If your device isn't working even after cleaning, you may want to reset the system. Consult key repair for the instructions on how to do this and follow them. This may be able to bring the key fob back to normal if the issue was due to the battery being dead.

After the key fob has been cleaned and resynthesized, it is a great idea to keep up with regular maintenance. You can ensure that your key fob working well for many years by wiping it with a damp towel and mild soap.

Reset the system

Despite the fact that today's modern-day key fobs are more efficient, secure, and convenient than ever, it is possible to have some problems. Luckily, the majority of the time, these issues aren't serious or complex, and can be solved with simple solutions like replacing the battery. If the issue is more serious or cannot be resolved by simple methods, an auto repair shop will replace and change the key fob.

Making your car lock or unlock using the key fob is the main purpose of the device, however, it can also be used to enable certain features of your vehicle. The key fob can be used to lower or raise the sunroof. This feature is very helpful when you're stuck in traffic and need to open your roof. In the same way, the key fob can be used to summon your car when it is located in a tight location.

The internal circuitry of a key fob can malfunction due to defects in manufacturing or wear and tear. The signs are erratic behavior or an inability to lock or unlock the car. Sometimes moisture, or other electromagnetic interference sources can interfere with the proper operation of the key fob. If your key fob is contaminated with dust or has become wet, it should be cleaned before you can use it again.

Replacing the key fob battery or cleaning the contacts could solve a malfunctioning device, however, if it continues to malfunction it may be necessary to do a factory reset. This can fix system bugs and improve device performance.

If you're unsure how to perform a reset then consult the device's owner's manual or manufacturer's site. Some devices require a special tool to complete the reset but you should be able to find the instructions for the specific model you have.

Another option for resolving problems with your key fob is to contact an Apache Junction mobile car locksmith. These professionals are able to replace and program key fobs on almost all car models. In addition, they can also repair car keys that have chips inside the keys.