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How to Fix a Key Fob That isn't Working

If your key fob won't work, you can fix it by following just a few steps. The first step is to make sure that it's not the backup remote.

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

Battery

It is not uncommon to find a battery on the car key fob to degrade. It is easy to replace batteries. However it is essential to select the right kind. You can consult the owner's manual or contact the manufacturer to determine the right kind. It's recommended to examine the battery compartment thoroughly, as dead batteries sometimes release caustic chemicals that could cause damage to the remote. If replacing the batteries doesn't solve the problem, it may be that there are other issues that require professional attention. If the 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 fob.

Buttons

From frequent use, key fobs could wear out and become dirty. It is not uncommon to have buttons stop working, or to require a hard press to make them work. This can be extremely frustrating, especially if you are away from home and you need to start your vehicle. Even broken or damaged buttons can be fixed with a little time and materials you already have at home.

First, ensure that the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and inspect the circuit board. Examine for signs of rust or other signs the buttons have been damaged or worn out. For example there could be conductive paint missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has worn-out or where conductive painting is missing. Do not rub too vigorously as this can damage the conductive paint and prevent the button from firing when pressed.

Check the battery connector's terminals for loose solder connections. If this is the case, soldering them back in place may bring back function to the button. You can follow the same method to restore functionality to any other loose connection in the fob.

If any of the rubber buttons on the front of the keyfob are not working or require being pressed extremely hard, the graphite disks at the back of the button might have worn out and need to replaced. You can usually do this by rubbing a pen over the disks. This should bring the button to life.

If none of these solutions work or you are unable to get the button to respond when pressed hard, it could be that the circuitry has failed. It is possible to fix this by cleaning and re-soldering your fob, but you should have a spare in case it doesn't work.

Circuitry

If the key fob buttons are working the circuit board that is inside the remote could be dirty. The issue can be solved by a thorough inspection. Water and broken cases are the most frequent causes of dirty boards. A damaged case allows water and other debris to get in and short out the electronics. Water can also eat away at pins and connectors that are small on the board, referred to as via's.

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

Non-Remote Transponder Chips

Sealed non-remote transponder chip are more durable than remote fobs that contain them but they can still be cracked by a hole that is drilled into them or over by a lawnmowers blade or car door handle. The majority of non-remote key keyless entry repair (have a peek here) transponder chips fail, remote key repair and this could be attributed to a blown fuse.

If you're able to remove the sealed key fob and can tolerate the mess, you can easily remove the circuit board and check the fuse using a multimeter to ensure that it is functioning as intended. function. If you're not comfortable with this, visit your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob sends a signal.

Programming

Key fobs aren't indestructible and are susceptible to damage through a variety of causes. They can break 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 a main dealer can reprogram your key fob to get it functioning again. If, in the unlikely event that resetting and repairing your key fob doesn't work, it could be time to replace it completely.