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Key Fob Repair: Replacing the Battery

The buttons on key fobs could be damaged and stop functioning properly after being tossed around in purses and pockets. This issue can be resolved by replacing the battery that is typically found in the snap-out case of most car fobs.

But, a new one is not likely to restore your key fob if the switch's internal contacts are worn out. There's an easy fix you can attempt at home:

Replace the battery

It could be time to replace the battery if your key fob isn't working or takes longer to unlock or lock your vehicle than normal. It's good news that replacing the battery of your key fob is one of the most simple tasks you can tackle yourself. It's also a cost-effective fix that could save you a trip to an expert locksmith or a dealership.

The majority of key fobs need a coin-style battery (CR2032 or similar) which you can purchase at any general store or home improvement center or auto parts stores. Key fobs come with slots for these batteries, and it is easy to replace the battery. Depending on the manufacturer, you may need to use a screwdriver or other tool to open the cover for the battery compartment.

If your key fob is equipped with clips that hold the batteries in place, gently remove them using your fingers or with non-metallic tools. Install the new battery, making sure to place it in the correct way. Be nearby key repair shop of its orientation when removing the old one. It is crucial to avoid touching the batteries' flat surfaces, since scratches from fingers can decrease their life.

Close the case of the key fob and test its functionality by pressing the button. If the key fob still does not work, you'll need to open it again and ensure that the battery is inserted correctly.

It is also possible that a simple battery replacement will not be enough to resolve the problem, such as physical or electrical trauma. In this case, you'll need to bring your key fob to a dealer or automotive service center for repair. However, before you do so, there are four issues that a battery replacement can't solve. You must be aware of these issues, to be able to get help from a trained technician when necessary. You can also find out how to fix the defective transmitter of a key fob in order to determine the reason why it's not working.

Clean the Contacts

Maintaining your key fob's cleanliness is crucial to its function and life. Over time, natural oils from your fingers and pocket lint can accumulate on the keys' buttons and crevices and may cause keys to stop working completely. It's easy enough to fix, though all you need is some rubbing alcohol and a cotton swab.

Then, open the key fob by removing the lid off using an instrument or coin and gently removing the battery. Be sure to note the type of battery it's (negative and positive sides) to ensure that you re-insert it correctly when you are finished.

Then, wet a cotton swab or small brush with isopropyl (rubbing) alcohol and start cleansing the dirt off all of the fob's buttons and the surrounding areas. Pay particular attention to the battery's contacts, making sure they are clean of dirt or grease. Once you're done your task, allow the fob and its components completely dry.





If your device doesn't work after cleaning it, it could be an idea to reset the system. Consult your owner’s manual to learn how to reset the system. If the key fob was dead, this might be enough to bring it back to life.

It is crucial to maintain the key fob regularly after it has been cleaned and synchronized. You can ensure that your key fob functioning for many years by wiping it clean using a damp towel and mild soap.

Reset the System

Despite the fact that today's modern-day key fobs are more capable, secure, and convenient than ever before, it's possible for them to run into certain problems. Luckily, the majority of the time problems aren't severe or complex and are usually solved with simple solutions such as replacing the battery. If the problem is more serious or the issue can't be solved by simple solutions such as a professional auto repair shop can repair and replace the key fob.

The device's primary function is to lock or unlock your car, however you can also make use of it to activate certain vehicle features. The key fob can be used to lower or raise a sunroof. This feature is extremely useful when you are stuck in traffic and require to open your roof. Similarly, the key fob can be used to summon your vehicle when it is parked in a tight spot.

The internal circuitry of a key fob and buttons may fail due to manufacturing defects or wear and tear. The signs are erratic behavior or a complete failure to lock or unlock the car. Moisture or other electromagnetic interference sources can sometimes affect the function of a keyfob. If your key fob has become dirty or wet, or is contaminated by dust, it's likely to need to be cleaned before being used again.

Replacing the battery on the key fob or cleaning the contacts can help fix a malfunctioning device however, if it continues to run erratically, you may need to perform a factory reset. This can fix system bugs and restore device performance.

If you're unsure the best way to perform a reset, consult your device's owner's manual or the manufacturer's website. Certain models require a specific tool to complete the reset however, you should be able to locate instructions that are applicable to your specific model.

Contacting a mobile locksmith for cars in Apache Junction is another option to solve issues with your keyfob. They are able to replace and program key fobs for nearly all makes of cars. They can also repair keys with chips.