How to Fix a Key Fob That isn't Working

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

If your backup remote is unable to unlock and lock the doors of your car, then it is most likely that the primary remote is not working. The most common causes for key problems with your car remote are battery or circuitry issues.

Battery

The battery in a key fob can wear out over time. It is easy to replace the battery. However it is essential that you choose the right kind. You can refer to the owner's manual or contact the manufacturer to find out the correct type. It is also important to examine the battery compartment, as 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 could be because there are other issues that require attention by a professional. If buttons are damaged or stuck for instance it might be necessary to take the remote apart and rework each component. You can also try reprogramming the vehicle to recognize the new device.

Buttons

Key fobs may become dirty and worn out from repeated use. This is not unusual however, it can cause buttons to cease working or require a hard press for them to work. This can be extremely frustrating especially if you're away from home and you need to start your car. Fortunately, even worn-out or broken buttons can usually be fixed with just a bit of time and a few materials you have in the house.

First, ensure that the batteries are charged correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and inspect the circuit board. Check for signs of rust or other signs the buttons are worn or damaged. For instance the paint that conducts electricity could be missing. Utilizing a Q-tip dipped in alcohol to gently clean any membrane contacts that have become damaged or where conductive paint is missing. Don't rub too hard, as this could erode the conductive paint, and block the button from firing when you press it.

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

In key repair shop near me , if any of the rubber buttons on the front of the key fob have stopped functioning or require a difficult press to function, it is likely that the graphite disks on the back of the button are wearing down and require replacement. This is usually done by rubbing a pencil on the disks, which should bring the button back to life.

If none of these solutions work, or if you still cannot get the button to respond when you press it hard, it could be that the circuitry is failing. This can sometimes be repaired with a quick clean and replacing the solder, but it is recommended to have an additional fob available in the event this method fails for you.

Circuitry


If the key fob buttons are working the circuit board in your remote may be dirty. A thorough inspection will usually resolve this issue. Broken cases and water are the most frequent causes of boards that are dirty. A broken case can allow water and other debris to enter the circuit board, causing it to short. Water can also damage pins and vias, which are the tiny connectors found on the board.

If you're able to open up your key fob and don't mind a little mess, we can take off the buttons and solder new ones in their place. It's also worth looking at the battery terminal connections. If they're loose, the buttons could not function or get stuck in their down position. Soldering the terminals and buttons back in place is usually all that's needed to return keys that are not in working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chip are more durable than remote fobs that contain them however they are still susceptible to being broken by a hole being that is drilled into them or over by a lawnmowers blade or car door handle. Most of the time non-remote transponder chip failures could be attributed to blowing fuses.

If you're handy enough to remove a sealed non-remote key fob and are able to bear the mess, you can easily remove the circuit board and test the fuse with a multimeter for proper 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. car keys repair will inform you whether the key fob is sending an RF signal.

Programming

Key fobs aren't impervious to destruction and are susceptible to being 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 requires changing the program. A professional auto locksmith or main dealer will be able to reprogram your key fob and get it working again. If resetting or fixing the keyfob is not working, you may need to replace it.