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Key Fob Repair: Replacing the Battery

When they are tossed around in pockets and purses keys fobs can deteriorate and fail to register presses with accuracy. This issue can be resolved by replacing the battery that is usually located in the snap-out case of the majority of car fobs.

However, a new replacement may not revive your key fob if its internal switch contacts are worn out. This is a simple fix that you can perform at home.

Replace the Battery


It's possible to change the battery in your key fob if it isn't working or takes longer to unlock or lock your car than it does on a regular. Replacing the battery of your key fob is among those easy tasks you can complete yourself. It's a simple fix that will save you money and time on a trip to the dealership or a locksmith.

You can buy a coin-style (CR2032) battery at any auto parts, home improvement, or general retailer. Key fobs come with a slot for these batteries, and it is simple to replace the battery. Depending on the manufacturer you might need to use a screwdriver in order to open the compartment.

Certain key fobs have clips that secure the battery in place; If so you can gently lift them up using your fingers or a non-metallic tool. Install the new battery, taking care to place it in the correct way. Take note of the orientation when you remove the old one. Avoid touching the flat surfaces of the batteries as this can reduce their life.

Once the new battery is installed, close the key fob's case and test it by pressing the button to ensure it works. If the key fob still doesn't function, you may have to open it again and verify that the battery is correctly inserted.

You may also find that simply replacing the battery is not enough to resolve the issue. This could be caused by physical trauma or electrical damage. In this instance, you will be required to bring your key fob to a dealer or auto service center to make repairs. However, before you do this, you should be aware of four issues that a replacement battery won't fix. You must be aware of these issues so that you can seek help from a qualified technician when necessary. You should also learn how to repair a key fob's defective transmitter to learn more about why it may not be working properly.

Clean the Contacts

Maintaining your key fob's cleanliness is vital to its functionality and lifespan. Over time the natural oils on your fingers and pocket dust can build up in key fob's buttons and crevices. This can cause the keys not to work. It's simple enough to fix all you need is ruby alcohol and a cotton swab.

Open the key fob first by gently prying the battery out with either a screwdriver or coin. Note the type of battery (negative and positive side) to ensure you put it back in the correct way.

Then, moisten this link or swab with isopropyl (rubbing) alcohol and begin taking off the dirt from all buttons on the fob and the surrounding areas. Make sure to pay special attention to the contacts of the battery and ensure that they are clean. After you have finished cleaning the fob, let it and all its components completely dry.

If your fob isn't functioning even after cleaning, you might want to reset the system. Consult your owner's manual for the instructions on how to do this, and follow them. This could be able to bring the key fob back to life if the problem was due to the battery being dead.

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

Reset the system

Even though today's high tech key fobs come with more features that are safer, more secure, and are more convenient than they ever were but they are still susceptible to some problems. Most of the time, these issues aren’t serious or complex and can be solved with simple solutions, like changing the battery. If the problem is more serious or the issue isn't resolved with simple methods, a professional auto repair shop can repair and replace the key fob.

The ability to lock or unlock with the key fob is the main purpose of the device but it also can be used to enable certain features of your vehicle. The key fob can be used to lower or lift a sunroof. This feature can be very beneficial if you need to open the roof while you are stuck in traffic or your hands are full. The key fob can be used to summon your car when it's located in a tight spot.

The internal circuitry of a key fob can malfunction due to manufacturing defects or wear and tear. The signs could include unpredictable behavior or a complete failure to lock or unlock the car. Moisture or other electromagnetic interference sources can sometimes interfere with the proper function of the keyfob. If your key fob is wet or contaminated with dust, it will need to be cleaned before being used again.

If the device continues to behave unpredictably after replacing the key fob or cleaning the contacts, you might require a factory resetting. This can fix system-related issues and improve device performance.

If you're unsure how to perform a reset make sure you consult the owner's manual or manufacturer's site. Certain devices require specialized tools to reset them, but you'll find instructions specific to the model you have.

Contacting a mobile locksmith for cars in Apache Junction is another option to solve issues with your key fob. These experts are able replace and program key fobs for almost all models of automobiles. They can also fix keys that have chips.

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