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How to Fix a Key Fob That isn't Working

If your key fob does not work, you can fix it by following some simple steps. The first step is to make sure that it's not your backup remote.

If the backup is able to lock and unlock your car doors, it is most likely an issue with the main remote. The majority of car remote key malfunctions result from circuitry or battery issues.

Battery

It is not unusual for the battery in a car key fob repair key fob to degrade. It is easy to replace the battery. However it is crucial to select the right type. You can refer to your owner's guide or contact the manufacturer to find out the correct type. It is also important to check the battery compartment, since batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the batteries doesn't solve the issue, it may be that there are other issues that require professional attention. For example, if buttons seem to be stuck or damaged It may be necessary to disassemble the remote and rebuild its components. You can also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs can become filthy and worn out due to frequent use. This is not unusual however it can cause buttons to stop working or require a very hard press for them to function. This can be a huge hassle especially if you're away from home and need to start your car key immobiliser repair. Even malfunctioning or worn-out buttons are often fixable with a little time and the tools you already have at home.

First, check that the batteries are correctly installed and that the indentation on the back of the button is filled. Then, open the remote with care and look over the circuit board. Look for signs of corrosion or other indications that the buttons are worn or damaged, such as missing paint that is conductive. Use a Q-tip dipped into rubbing alcohol to gently clean any membrane contact that has worn out or where conductive paint is missing. Be careful not to rub too hard, since this could cause damage to the conductive paint and block the button from firing when it is pressed.

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

Finally, if any of the buttons made of rubber on the front of the key fob have stopped working or require a very hard press to work it is likely that the graphite disks on the back of the button are wearing down and need to be replaced. This can be done by rubbing a pencil on the disks. This should bring the button back to its original state.

If none of this is useful, or if the button does not respond to a hard press, then it may be the case that the circuit board itself has gone bad. This can be fixed by a quick clean, and re-soldering, but it is recommended to have an additional fob available in the event this method fails for you.

Circuitry

Whether or not the keys fob buttons are functioning, the circuit board inside your remote may be dirty. A thorough inspection will usually resolve this problem. Water and broken cases are the most common causes of boards that are dirty. A damaged case allows water and other debris to pass through and short circuit the electronic components. Water can also eat through pins and vias, which are small connectors that are found on the board.

If you're able to open your key fob and don't mind making a mess, we can take the buttons out of their sockets and then solder new ones. It's also worth checking the battery terminal connections. They can become very dirty and if they're loose, the buttons might not work or even stay in their down position. Soldering terminals and buttons back to their proper positions is usually enough to bring a non-working fob to working.

Non-Remote Transponder Chips

The sealed non-remote chips are more durable than their remote fobs. However, they are susceptible to cracking if a hole is drilled into them or in the event that a door handle of a car key remote repair near me or lawnmowers plows over them. Most of the time, non-remote control car key repairs transponder chip failures can be blamed on a blown fuse.

If you are not comfortable opening the key fob, you can remove the circuitboard and utilize a multimeter to check that the diode is working properly. If you're not sure with this, you can go to your local Oreilly or hardware store and test their RF frequency tester. This will tell you whether the key Repair fob is sending signals.

Programming

Key fobs are not indestructible and are susceptible to damage by a variety of factors. They may lose their connection to the receiver in your car because of shock or a 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 working again. If resetting or repairing the keyfob is not working it may be necessary to replace it.