How to Fix a Key Fob That isn't Working

If your key fob isn't functioning There are a few simple steps that can fix it. First, make sure that it's not the backup remote.

If the backup remote is able to lock and unlock your car doors it is most likely an issue with the main remote. Most problems with car remote keys are caused by circuitry or battery issues.

Battery

It is not unusual for the battery inside the car key fob to get worn out. It is relatively easy to change out batteries, but it is essential to make sure that you select the correct one; you can look in the owner's manual or talk to the dealer of the manufacturer to find out what kind of battery you need. It is also a good idea to inspect the battery compartment carefully because dead batteries can leak caustic chemicals that can damage the remote key repair. If replacing the battery does not solve the issue there may be additional issues requiring professional attention. If buttons are stuck or broken, for example it could be necessary to remove the remote and rebuild each component. It is also possible to reprogramme the vehicle to recognize the new remote.

Buttons

Key fobs can get dirty and remote Key repair worn out from frequent use. It is not unusual for buttons to cease functioning, or require a hard push to make them work. This can be a hassle particularly when you're away from home and you need to turn on your car. Fortunately, even worn-out or broken buttons can usually be fixed with a bit of time and a few materials you might already have in the home.

First, check that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully open the remote and inspect the circuit board. Examine for signs of rust or other signs that buttons are worn out or damaged, such as missing conductive paint. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contacts that have worn or have conductive paint missing. Do not rub too vigorously, as this could erode the conductive paint, and block the button from firing when you press it.

Examine the battery connector's terminals carefully for any loose solder connections. If this is the case, simply connecting them back may restore functionality to the button. The same method can be used to restore function to any other loose connections in the fob.

In the end, if any of the buttons made of rubber on the front of the key fob aren't working or require a long press to function it is likely the graphite disks at the back of the button are wearing out and need to be replaced. This can usually be done by rubbing a pencil on the disks. This should bring the button back to its original state.

If none of these solutions work or you not be able to get the button respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix this by cleaning and re-soldering the fob, but you should have a spare in case it doesn't work.

Circuitry

The circuit board in the remote control could be dirty, regardless of whether the buttons on the key fob are working or not. A thorough examination is usually enough to fix this issue. Water and broken cases are the most frequent causes of dirty boards. A damaged case allows water and other debris to enter and short circuit the electronic components. Water can also eat through pins and vias, which are tiny connectors that are found on the board.

If you're able to open up your key fob, and you're not afraid of a little mess, we can take off the buttons and solder new ones in their place. Also, it's worth checking the connections between the battery terminals. They can become extremely dirty and if they're loose, the buttons may not work or may even remain in their down position. Soldering the terminals, and putting the button back in place is usually all that's required to return keys that are not in working condition.

Non-Remote transponder chips

The non-remote chips that are sealed are more durable than their remote fobs, however they can be cracked if a hole is drilled in them or in the event that a door handle of a car or lawnmowers plows over them. Most of the time, non-remote transponder chips fail, and this can be attributed to a blown fuse.

If you're not confident opening the key fob, you can remove the circuitboard and utilize a multimeter to check that the diode is operating correctly. If you're unsure about doing this, go to your local hardware store or the Oreilly's and they will usually have an RFID frequency tester that can tell you whether the mobile key fob repair fob is sending signals.

Programming

Key fobs aren't indestructible and can be damaged by a lot of things. They can lose their pairing to the car's receiver due to shock or low battery, which calls for the reprogramming. A professional auto locksmith, or a dealer in the main, can reprogram your key fob and get it back up and running again. If resetting or repairing the keyfob is not working it may be necessary to replace it.