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How to Fix a Key Fob That isn't Working

If your key fob won't work then you can fix it with a few simple steps. car key repair service is to make sure that it's not your backup remote.

If the backup remote is able to lock and unlock your car doors, then there's a likely issue with the main remote. broken car key repair near me of key problems with your car remote are battery or circuitry issues.

Battery

It is not uncommon for the battery inside the car key fob to wear out. It is easy to replace the battery. However it is essential that you choose the right type. You can refer to your owner's manual or call the manufacturer to inquire about the right type. It's recommended to examine the battery compartment with care since dead batteries may release caustic chemicals that could harm the remote. If changing the batteries does not solve the issue it could be that there are other issues that require attention by a professional. For instance, if buttons appear stuck or broken it could be necessary to disassemble the remote and rework its components. You can also try reprogramming the vehicle to recognize the new key fob.

Buttons

Key fobs may become dirty and worn out from frequent use. It is not uncommon for buttons to stop working, or to require a hefty press to make them work. This can be a hassle, especially when you are away from your home and you need to switch on your car. Even worn-out or malfunctioning buttons can be fixed with a little time and tools you already have at home.

First, ensure that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully remove the remote and look at the circuit board. Check for indications of rust or other signs the buttons have been damaged or worn out. For example there could be conductive paint missing. Utilizing a Q-tip dipped in alcohol, gently clean any membrane contacts that have become worn or where conductive paint is missing. Don't rub too hard as this can damage the conductive paint and stop the button from firing when you press it.


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

Finally, if any of the buttons made of rubber that are on the front of the key fob have stopped functioning or require a difficult press to function it is likely the graphite disks at the back of the button are deteriorating and require replacement. This can be done by rubbing a pencil across the disks, which will bring the button back to life.

If none of these solutions work, or if you still are unable to get the button to respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix the issue by cleaning and re-soldering the button but you should also have a spare in case it does not work.

Circuitry

If the key fob buttons function the circuit board in the remote could be dirty. This issue can be fixed through a thorough examination. The most frequent causes of dirty circuit boards are water and damaged cases. A damaged case allows water and other debris to pass through and short out the electronics. Water can also damage pins and vias, which are the tiny connectors found on the board.

If you are handy enough to open your key fob, and don't mind making an mess, you can remove the buttons from their sockets and then solder new ones. It's also worth checking the battery terminal connections. They can get very dirty and if they're loose, the buttons may not work or may even remain in their down position. Soldering the terminals and button's back into place is typically all it takes to restore a non-working key fob to functioning condition.

Non-Remote transponder chips

The non-remote chips that are sealed are more durable than their remote fobs, but 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. Failures of the fuse are typically to blame for non-remote chips failures.

If you're handy enough to open up a key fob that is sealed and are willing to put up with the mess, you can take off the circuit board and check the fuse using 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 an radio frequency tester that can tell you if the key fob is sending signals.

Programming

Key fobs aren't indestructible and can be damaged through a variety of causes. They may lose their connection with the receiver in your vehicle due to shocks or a low battery, which calls for changing the program. A professional auto locksmith, or the main dealer can reprogram your keyfob to get it functioning again. In the rarer case that resetting and fixing your key fob isn't working it may be time to replace it entirely.

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