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How to Fix a Key Fob That isn't Working

If your key fob doesn't work There are a few simple steps that can fix it. The first step is to be sure that it's not your backup remote.

If the backup remote is able to lock and unlock your car door, then there is likely an issue with the main remote. The majority of repair car key fob remote key malfunctions result from circuitry or battery problems.

Battery

The battery in the key fob could get worn out over the course of time. It is relatively easy to change out batteries, but it is important to make sure 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 a good idea to inspect the battery compartment thoroughly since dead batteries may release caustic chemicals that could harm the remote Key repair. If changing the battery doesn't fix the issue, there may be other issues requiring professional attention. For instance, if buttons seem to be stuck or damaged, it may be necessary to disassemble the remote and rework its components. You could also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs may become dirty and worn-out from frequent use. It is not common for buttons to stop working, or to require a hefty push to make them work. This can be very frustrating particularly if you're away from home and you need to start your vehicle. Fortunately, even worn-out or malfunctioning buttons can often be fixed with just a bit of time and a few materials you may already have around the home.

First, verify that the batteries are correctly installed and that the indentation on the back of the button has been filled. Then, carefully open the remote and inspect the circuit board. Look for indications of rust or other indications that the buttons have been damaged or worn. For instance, conductive paint may be missing. Use a Q-tip, dipped in alcohol to gently clean any membrane contact that is worn out or has conductive paint missing. Be careful not where to repair car key remote rub too hard, as this can erode the conductive paint and stop the button from firing when pressed.

Also, be sure to check the battery connector's terminals for any loose solder connections. Soldering them back into place will allow the button to function again if this is the situation. You can apply the same method to restore functionality to any other loose connection in the fob.

In the end, if any of the buttons made of rubber that are on the front of the key fob have stopped working or require a very difficult press to function, it is likely that the graphite disks on the back of the button are wearing out and need to be replaced. It is usually done by rubbing a pen across the disks. This should bring the button back to life.

If all of this doesn't help, or if the button still doesn't respond to a hard push, then it may be because the circuit board itself has gone bad. This can be fixed with a quick clean and replacing the solder, but it is best to have an extra fob available in the event this method doesn't work for you.

Circuitry

If the key fob buttons function the circuit board that is inside your remote might be dirty. This issue can be fixed through a thorough examination. Water and broken cases are the most common causes of boards that are dirty. A damaged case can allow water and other debris to get in and short circuit the electronic components. Water can also get through pins and vias, which are the tiny connectors on the board.

If you're able to remove your key fob and don't mind making a mess, we can remove the solder from the buttons and then solder new ones in their place. It's also worth examining the battery terminal connections. If they are loose, the buttons could not function or get stuck in their down position. Soldering the terminals, and putting the button back in place is usually all that's required to return the key fob that is not working to working 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 key fob repair or lawnmowers is pushed over them. Failures of the fuse are typically to blame for non-remote chips failures.

If you're not confident opening the key fob, you may remove the circuitboard and utilize a multimeter to verify that the diode is operating properly. If you don't feel comfortable with this, you can go to your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob transmits a signal.

Programming

Key fobs endure lots of abuse and aren't impervious to damage. They may lose their connection to the receiver in your car because of shock or a low battery, requiring the reprogramming. A professional auto locksmith, or the main dealer can reprogram your keyfob to get it working again. In the event that resetting or repairing your key fob isn't working it may be time to replace it entirely.