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Key Fob Repair: Replacing the Battery

The buttons on key fobs may become damaged and stop functioning properly after being jostled in pockets and purses. Replacing the battery, which a majority of car key repair near me fobs come with in a snap-out bag, can fix this issue.

But, a new one may not revive your key fob if its internal switch contacts are worn out. It's a good thing that this is an easy fix that you can try at home:

Replace the battery

It may be time to replace the battery if your key fob is slow or takes longer to unlock or lock your car than usual. Replacing the battery of your key fob is one of those simple tasks you can complete yourself. It's also a cost-effective fix that could help you avoid a trip to an expert locksmith or dealer.

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

If your key fob has clips that keep the batteries in place, remove them with your fingers or other non-metallic tools. Install the new battery, making sure to put it in the right place. Take note of the orientation when you remove the old one. It is essential to avoid touching the batteries' flat surfaces since finger marks can reduce their life.

Once the new battery is installed then close the key fob's case and test it by pressing the button to ensure it works. If the key fob isn't working, you might need to open it again and verify that the battery is correctly inserted.

You may also find that a simple replacement of the battery isn't enough to solve the issue. This could be due to physical or electrical trauma. In this scenario you'll be required to bring your key fob to a dealer or auto service center for repairs. However, before doing so, there are four common issues that a battery replacement won't fix. You should be aware of these issues, to be able to seek help from a qualified technician if needed. You can also read how to fix the malfunctioning transmitter of a broken Key repair fob to discover the reason it's not working.

Clean the Contacts

It is crucial to keep your key fobs clean in order to maintain their function and durability. Over time, natural oils from your fingers and pocket lint can build up on the buttons and crevices, and can even cause keys to stop functioning completely. It's easy enough to fix all you need is cleaning alcohol and a cotton swab.

First, open up the key fob by taking the lid off using the help of a coin or screwdriver and gently prying out the battery. Make sure you note the type of battery it is (negative and positive sides) so that you can re-insert it correctly when you're done.

Then, wet a small or swab with isopropyl (rubbing) alcohol and begin cleansing the dirt off all buttons on the fob and the surrounding areas. Be particular about the battery contacts, making sure that they are free of grease or dirt. Once you're done, let the fob and all its components completely dry.

If your fob isn't functioning even after cleaning, you might need to reset the system. Consult your owner’s manual for instructions on how to reset the system. If the key fob is 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 resynchronized. 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

Although today's ultra-modern key fobs come with more features, are safer, and are more convenient than ever, they can still encounter some problems. Luckily, the majority of the time the issues aren't major or complex and are usually fixed with simple methods such as replacing the battery. If the issue is severe or is not resolved with simple techniques, an auto repair shop will replace and reprogram your key fob.

The ability to lock or unlock using the key fob is the main purpose of the device, but it also can be used to activate certain features of your vehicle. The key fob can be used to lift or lower the sunroof. This feature is useful when you have to open the roof while stuck in traffic or your hands are full. The key fob is also useful for summoning your car key repair company even if it's in an awkward location.

A key fob's internal circuitry and buttons could fail due to manufacturing defects or wear-and-tear. Symptoms may include intermittent behavior or failure to lock or unlock the car. Moisture or other electromagnetic interference sources may sometimes interfere with the proper function of a keyfob. If your key fob is dirty or has been wet, it needs to be cleaned before you can use it again.

Replacing the battery of your key fob or cleaning the contacts might fix a malfunctioning device, but if the device continues to run erratically you might need to do a factory reset. This can clear up bugs in the system and restore the performance of the device.

If you're not sure how to do a factory reset on your device, refer to the device manufacturer's website or your owner's manual. Some devices require special tools to reset them, however you'll need to find the correct instructions specific to the model you have.