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How to Fix a Key Fob That isn't Working

If your key fob isn't working, a few easy steps can fix it. First, make sure that it's not your backup remote.

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

Battery

The battery in the key fob may wear out over time. It is simple to replace batteries. However it is crucial that you choose the right type. You can refer to the owner's manual or contact the manufacturer to find out the right kind. It is also important to inspect the battery compartment, as dead batteries can leak caustic chemicals that can harm the remote. If changing the battery doesn't fix the issue there could be other issues that require attention from a professional. If the buttons are damaged or stuck for instance it might be necessary to disassemble the remote and rework each component. You could also try reprogramming the vehicle to recognize the new key fob.

Buttons

Due to repeated use, key fobs may get dirty and worn. This is not uncommon however it can cause buttons to stop functioning or require a long press to function. This can be frustrating, especially when you are away from home and you need to turn on your car. Fortunately, even worn-out or broken buttons can usually be fixed with a little time and some of the materials you have in the home.

First, check that the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and examine the circuit board. Check 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 that has been dipped in rubbing alcohol to gently clean any membrane contact that is worn-out or where conductive painting is missing. Don't rub too hard in order to damage the conductive paint, and block the button from firing when it is pressed.

Check the battery connector's terminals for loose solder connections. If this is the case, simply reconnecting them may bring back function to the button. The same procedure can be used to restore function to any other loose connections within the fob.

If any of the rubber buttons located at the front of the keyfob are not working or require being press very hard the graphite disks on the back of the button might have worn out and will need to replaced. It is usually done by rubbing a pen across the disks. This should bring the button to life.

If none of this is helpful or if the button still does not respond to a firm press It could be that the circuit board itself has become damaged. This can sometimes be repaired with a quick clean and refitting, but it's ideal to have a spare fob available in the event this method fails for you.

Circuitry

If the keys fob buttons are functioning, the circuit board inside the remote could be dirty. A thorough inspection is usually enough to fix this problem. Broken cases and water are the most frequent causes of dirty boards. A broken case allows water and other debris to pass through and short out the electronics. Water can also destroy pins and small connectors on the board called via's.

If you're able to open your key fob and don't mind making a mess, we can de-solder the buttons and put new ones in their place. It's also worth examining the battery terminal connections. If they're loose, the buttons may not work or even become stuck in their down position. Soldering the terminals and button's back into place is typically all it takes to restore a non-working key fob to working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chip are more durable than the remote car key repair near me fobs that contain them but they can be cracked by a hole that is drilled into them or over by a lawnmowers or emergency car key repair door handle. Failures of the fuse are typically to blame for non-remote chip failures.

If you're able to remove a key fob repairs fob that is sealed and are able to bear the mess, you can take off the circuit board and examine the fuse with a multimeter for proper diode function. If you're unsure about doing this, go to your local hardware store or Oreilly's, and they usually have an radio frequency tester that can determine if the key fob is sending a signal.

Programming

Key fobs aren't indestructible and can be damaged by a lot of things. They can lose their pairing to the receiver in your car key repairs near me because of shock or a low battery, which calls for them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob and get it back up and running. If resetting or repairing your keyfob does not work, you may need to replace it.