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How to Fix a Key Fob That isn't Working

If your key fob doesn't work and you're not sure why, you can fix it with some simple steps. First, ensure that it's not your backup remote.

If the backup can lock and unlock your car key and repair doors, then there's a likely issue with the main remote. The majority of car remote key repair remote key malfunctions are caused by circuitry or battery issues.

Battery

The battery inside a key fob can get worn out over the course of time. It is quite simple to replace batteries, but it is important to ensure you select the correct one that you can refer to the owner's manual or talk to the dealer of the manufacturer to determine the type of battery you require. It is recommended to examine the battery compartment thoroughly since dead batteries may leak caustic chemicals that can damage the remote. If replacing the battery does not solve the issue there could be other issues that require professional attention. If the buttons are stuck or broken for instance, it may be necessary disassemble the remote and rework each component. You could also try reprogramming the vehicle to recognize the new device.

Buttons

Due to frequent use, keyless entry repairs (browse this site) key fobs can get dirty and worn. This is not atypical however it can cause buttons to stop working or require a hard press for them to function. This can be very frustrating, especially if you are away from home and need to start your vehicle. Fortunately, even worn out or broken buttons can usually be fixed with just a bit of time and a few items you may already have around the house.

First, check that the batteries are correctly installed and that the indentation at the back of the button is filled. Then, carefully remove the remote and examine the circuit board. Examine for signs of rust or other signs that buttons are worn out or damaged, such as missing the conductive paint. Then, using a Q-tip dipped in rubbing alcohol, gently clean any membrane contacts that have damaged or where conductive paint is missing. Don't rub too hard in order to damage the conductive paint and prevent the button from firing when you press it.

Also, make sure to inspect the battery connector terminals for any loose solder connections. If this is the case, soldering them back in place can restore function to the button. You can follow the same process to restore functionality to any other loose connection inside the fob.

If any of the rubber buttons on the front of the keyfob are not 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 do this by rubbing a pencil over the disks. This should bring the button back to life.

If none of this is helpful or if the button does not respond to a firm press It could be that the circuit board has gone bad. It is possible to fix this by cleaning and re-soldering your fob, but you should have another spare in case it does not work.

Circuitry

Whether or not the keys fob buttons are functioning, the circuit board inside your remote might be dirty. This issue can be fixed through a thorough examination. Broken cases and water are the most frequent causes of boards that are dirty. A broken case can let water and other debris to enter the circuit board, which can cause it to short out. Water can also destroy pins and small connectors on the board, referred to as via's.

If you're skilled enough to open your key fob and you don't mind making an mess, you can take the buttons out of their sockets and put in new ones. Also, you should check the connections between 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 buttons back in place is usually all it takes to restore keys that are not in working order.

Non-remote car key repair transponder chips

Sealed non-remote transponder chip are more durable than the remote fobs that have them but they can be damaged by a hole that is that is drilled into them or over by a lawnmowers or door handle for a car key fob repairs. Fuse failures are usually the cause of non-remote chip failures.

If you're handy enough to open up a sealed non-remote key fob and can tolerate the mess, you can take off the circuit board and test the fuse with an instrument to verify diode function. If you're not comfortable with this, you can go to your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob is sending a signal.

Programming

Key fobs take a lot of abuse and aren't completely indestructible. They can break their connection with the receiver in your vehicle due to shocks or a low-battery, which requires the reprogramming. A professional auto key repair near me locksmith or main dealer will be able to reprogram your key fob to get it back up and running. In the rarer case that resetting or repairing your key fob fails it may be time to replace it all over again.