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How to Fix a Key Fob That isn't Working

If your key fob doesn't work, you can fix it with just a few steps. First, make sure that it's not the backup remote.

If the backup can lock and unlock your car doors it is most likely an issue with the primary remote. The most common causes of key problems with your car remote are issues with the circuitry or battery.

Battery

The battery in the key fob could wear out over time. It is fairly easy to change out a battery, although it is essential to ensure that you choose the correct type that you can refer to your owner's manual, or contact the dealer for the manufacturer to find out the kind of battery you need. It is also essential to check the battery compartment, since batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the batteries doesn't solve the issue, it may be that there are other issues that require attention from a professional. If buttons are broken or stuck for instance it could be necessary to disassemble the remote and rework each component. You could also try reprogramming your car to recognize the new key fob.

Buttons

Key fobs can get dirty and worn-out from frequent use. key lock repair near me is not unusual, but it can cause buttons to stop working or require a difficult press to get them to function. This can be a hassle, especially when you are away from your home and you need to start your car. Even broken or damaged buttons are often fixable with a little effort and the tools you already have at home.

First, make sure that the batteries are properly placed and that the indentation at the back of the button has been filled. Then, open the remote with care and look over the circuit board. Check for signs of corrosion or other signs that the buttons are worn out or damaged, such as missing the conductive paint. Utilizing the Q-tip, dipped in alcohol to gently clean any membrane contacts that have become damaged or where conductive paint is missing. Don't rub too hard, as this could erode the conductive paint, and block the button from firing when you press it.

Examine the battery connector's terminals for loose solder connections. Soldering them back in place will allow the button to function again If this is the case. You can apply the same procedure to restore functionality to any other loose connection within the fob.


If any of the rubber buttons on the front of the keyfob are not working or require being pressing very hard the graphite disks at the back of the button could have worn out and need to replaced. It is usually done by rubbing a pencil over the disks. This will bring the button back to life.

If none of this is helpful or if the button doesn't respond to a hard press, then it may be the case that the circuit board has become damaged. It is possible to fix the issue by cleaning and re-soldering your fob, but you should have an extra in case it doesn't work.

Circuitry

If the key fob buttons are working the circuit board that is inside your remote may be dirty. A thorough examination is often enough to resolve this issue. The most common causes for dirty circuit boards are water and broken cases. A damaged case can allow water and other debris to enter and short circuit the electronics. Water can also destroy pins and small connectors on the board, which are known as via's.

If you're skilled enough to open your key fob, and aren't afraid of making a mess, we can take the buttons out of their sockets and then solder new ones. It's also worth checking the battery terminal connections. If they are loose, the buttons could not work or even become stuck in their down position. Soldering the terminals, and putting the button back into place is typically all it takes to restore a non-working key fob to functioning condition.

Non-Remote transponder chips

The sealed non-remote chips are more durable than remote fobs. However, they are susceptible to cracking in the event of a hole being drilled into them or in the event that a door handle of a car or lawnmowers plows over them. Most of the time non-remote transponder chip malfunctions can be attributed to a blown fuse.

If you are not comfortable opening the key fob, you can remove the circuitboard and utilize a multimeter to verify that the diode is working correctly. If you're not comfortable doing this, head to your local hardware store or Oreilly's, and they usually have an radio frequency tester that can let you know whether the key fob sending signals.

Programming

Key fobs aren't impervious to destruction and are susceptible to being damaged through a variety of causes. They can lose their pairing to the car's receiver because of shock or a low battery, requiring them to be reprogrammed. A professional auto locksmith, or the main dealer can reprogram the keyfob and get it functioning again. In the rarer case that resetting or repairing your key fob doesn't work it could be the time to replace it entirely.

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