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How to Fix a Key Fob That isn't Working

If your key fob won't work and you're not sure why, you can fix it by following some simple steps. The first step is to make sure it's not the backup remote.

If the backup can lock and unlock your car key repair door, it is most likely an issue with the main remote. The most common causes for key malfunctions for car remotes are battery or circuitry issues.

Battery

The battery in the key fob may get worn out over the course of time. It is simple to replace the battery. However it is crucial that you choose the right kind. You can consult the owner's manual or contact the manufacturer to inquire about the right kind. It is also essential to examine the battery compartment as batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the battery doesn't fix the problem there could be other issues that require professional attention. For instance, if the buttons seem stuck or broken It may be necessary to take the Remote key repair apart and rebuild its components. You can also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs can become dirty and worn-out from frequent use. This is not uncommon however it can cause buttons to stop working or require a very difficult press to get them to work. This can be extremely frustrating especially if you're out of town and need to start your vehicle. Even worn-out or malfunctioning buttons can be fixed with a little time and tools you already have at home.

First, check that the batteries have been correctly placed and that the indentation on the back of the button is filled. Take the remote apart and look over the circuit board. Look for indications of rust or other indications that the buttons are damaged or worn. For instance, conductive paint may be missing. Utilizing a Q-tip that has been dipped in alcohol, gently clean any membrane contacts that have worn or where conductive paint is missing. Be careful not to rub too hard, because this could damage the conductive painting and prevent the button firing when the button is pressed.

Check the battery connector's terminals carefully for any loose solder connections. If this is the case, connecting them back may bring back function to the button. You can use the same method to restore functionality to any other loose connection inside the fob.

If any of the rubber buttons located at the front of the keyfob aren't working or need to be pressing extremely hard, the graphite disks at the back of the button could have worn out and will require replacement. You can usually do this by rubbing a pen over the disks. This should bring the button to life.

If none of this is useful or if the button doesn't respond to a hard press It could be that the circuit board has become damaged. It is possible to fix this by a quick clean, and refitting, but it's recommended to have an additional fob in case this method doesn't work for you.

Circuitry

The circuit board in your remote control could be dirty regardless of whether the buttons on the key fob are working or not. A very thorough inspection will usually resolve this problem. Broken cases and water are the most common causes of dirty boards. A damaged case allows water and other debris to pass through and short out the electronic components. Water can also get through pins and vias, which are tiny connectors that are found on the board.

If you are handy enough to open your key fob, and don't mind making a mess, we can take the buttons out of their sockets and put in new ones. It's also worth checking the battery terminal connections. They can become extremely filthy and if they're not tight enough, the buttons might not function or even stick in their down position. Soldering the terminals, and putting the button back in their place is generally all that's required to return a non-working key fob to working condition.

Non-Remote Transponder Chips

The non-remote chips sealed in a sealed case are more durable than their remote fobs. However, they are susceptible to breaking when a hole is made into them or if a car keys repairs near me door handle or lawnmower runs over them. Most of the time, non-remote transponder chip failures can be attributed to blowing fuses.

If you're handy enough to open the sealed key fob and can tolerate the mess, you can take off the circuit board and examine the fuse with a multimeter for proper diode function. If you're unsure about doing this, visit your local hardware store or Oreilly's and they will usually have a RFID frequency tester that can determine whether the key fob is sending a signal.

Programming

Key fobs take a lot of abuse and aren't completely indestructible. They may lose their connection with the receiver inside your vehicle due to shocks or a low battery, requiring reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob to get it working again. In the rarer case that resetting or repairing your key repair shop near me fob doesn't work it may be time to replace it all over again.