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How to Fix a Key Fob That isn't Working

If your key fob won't work and you're not sure why, you can fix it by following a few simple steps. First, make sure that it's not the backup remote.

If your backup remote can lock and unlock the doors of your car remote key repair shop near me, then it is likely that the main remote isn't working. The most common causes for key malfunctions for car remotes are battery or circuitry issues.

Battery

It is not unusual to find a battery on a key fob for cars to wear out. It is fairly easy to change out a battery, although it is essential to ensure that you choose the correct type that you can refer to your owner's manual or contact the dealer of the manufacturer to find out the kind of battery you require. It's recommended to examine the battery compartment carefully, as dead batteries sometimes leak harmful chemicals that can harm the remote. If replacing the battery does not fix the problem, there may be other issues that require attention from a professional. For instance, if buttons seem stuck or broken it could be necessary to take the remote apart and rework its components. You can also try reprogramming the vehicle to recognize the new key fob.

Buttons

Due to frequent use, key fobs may wear out and become dirty. This is not uncommon however, it can cause buttons to stop working or require a difficult press to get them to work. This can be very frustrating particularly if you're away from home and you need to start your emergency car key repair. Fortunately, even worn out or damaged buttons can be fixed with a bit of time and a few items you may already have around the home.

First, make sure the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and look at the circuit board. Check for signs of corrosion or other indications that the buttons are worn out or damaged, like missing paint that is conductive. Use a Q-tip dipped into rubbing alcohol to gently clean any membrane contact that has damaged or has conductive paint missing. Avoid rubbing too hard, as this can erode the conductive painting and prevent the button from firing when it is pressed.

Examine the battery connector's terminals for loose solder connections. If this is the case, connecting them back could restore function to the button. You can apply the same procedure to restore functionality to any other loose connection within the fob.

If any of the rubber buttons located at the front of the keyfob isn't working or need to be pressing extremely hard, the graphite disks at the back of the button might have worn out and require replacement. You can usually do this by rubbing a pen over the disks. This will bring the button back to life.

If all of this doesn't help or if the button does not respond to a hard press It could be that the circuit board has become damaged. It is possible to fix this by a quick clean and replacing the solder, but it is recommended to have an additional fob on hand in the event that this method does not work for you.

Circuitry

The circuit board in the remote control could be dirty, regardless of whether the buttons on the key fob work or not. This problem can be resolved through a thorough examination. Broken cases and water are the most frequent causes of dirty boards. A damaged case could allow water and other debris into the circuit board, causing it to short. Water can also eat through pins and vias, which are small connectors on the board.

If you're able to remove your key fob and don't mind a little mess, we can remove the solder from the buttons and put new ones in their place. Also, you should check the connections between the 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 their place is generally all that's required to return the key fob that is not working to working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are more durable than the remote fobs that contain them but they can still be damaged by a hole that is made in them or pushed over by a lawnmower or door handle for a repair car key fob. The majority of non-remote transponder chips fail, and this can be attributed to an exploded fuse.

If you're not confident opening the key fob, remove the circuitboard and use a multimeter to verify that the diode is functioning properly. If you're not confident doing this, head to your local hardware store or Oreilly's and they'll usually have an RF frequency tester that will tell you whether the key fob is sending a signal.

Programming

Key fobs take lots of abuse and aren't impervious where to repair car key remote damage. They may lose their connection to the receiver in your car remote key repair due to shock or low battery, which requires them to be reprogrammed. A professional auto locksmith or the main dealer can reprogram the key fob and get it back working again. In the rarer case that resetting and repairing your key fob fails it could be the time to replace it completely.