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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. The first step is to be sure it's not the backup remote. If the backup can lock and unlock your car door, it is most likely an issue with the primary remote. The most common causes for key malfunctions for car remotes are circuitry or battery issues. Battery The battery inside the key fob could wear out over time. It is easy to replace the battery. However it is crucial to select the right type. You can consult your owner's guide or contact the manufacturer to inquire about the correct type. It is also a good idea to inspect the battery compartment thoroughly since dead batteries may leak caustic chemicals that can damage the remote. If changing the batteries does not solve the problem it could be that there are other issues that require professional attention. For example, if buttons seem stuck or damaged, it may be necessary to take the remote apart and rebuild its components. You could also try reprogramming the vehicle to recognize the new fob. Buttons Key fobs can become dirty and worn-out from frequent use. This is not atypical, but it can cause buttons to stop working or require a long press to function. This can be very frustrating especially when you're away from your home and have to switch on your car. Even malfunctioning or worn-out buttons are often fixable with a little effort and tools you already have at home. First, make sure that the batteries have been correctly placed and that the indentation on the back of the button has been filled. Then, carefully open up the remote and examine the circuit board. Check for signs of corrosion or other signs that buttons are worn out or damaged, such as missing conductive paint. Use repair car key near me -tip that has been dipped in rubbing alcohol, gently clean any membrane contacts that are damaged or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint and prevent the button from firing when you press it. Examine the battery connector's terminals carefully for any loose solder connections. If this is the case, simply reconnecting them may bring back function to the button. You can use the same procedure to restore functionality to any other loose connection in the fob. If any of the rubber buttons on the front of the keyfob aren't working or require being pressing extremely hard, the graphite disks at the back of the button may have worn out and will need to replaced. This can usually be done by rubbing a pencil across the disks, which should bring the button back to working. If all of this doesn't help or if the button still doesn't respond to a firm press It could be because the circuit board is damaged. It is possible to fix the issue by cleaning and re-soldering your fob but you should also have a spare in case it does not work. Circuitry If the key fob buttons function, the circuit board inside your remote might be dirty. The issue can be solved by a thorough inspection. The most frequent causes of dirty circuit boards is water and damaged cases. A damaged case can allow water and other debris to get in and short circuit the electronic components. Water can also destroy pins and connectors that are small on the board called via's. If you're able to open your key fob, and you're not afraid of a little mess, we can remove the solder from the buttons and put new ones in their place. It's also worth checking the connections between the battery terminals. If they're loose, the buttons could not function or get stuck in their down position. Soldering the terminals, and putting the button back in place is usually all that's required to return keys that are not in functioning condition. Non-Remote transponder chips The sealed non-remote chips are more durable than remote fobs, but they can be cracked in the event of a hole being drilled in them or when a door handle for a car or lawnmowers plows over them. The failure of the fuse is usually to blame for non-remote chips failures. If you're not comfortable opening the key fob, you can remove the circuitboard and utilize a multimeter to determine if the diode is operating properly. If you're not confident doing this, go to your local hardware store or Oreilly's and they usually have a radio frequency tester that can let you know whether the key fob is transmitting a signal. Programming Key fobs endure a lot of abuse and aren't impervious to damage. They may lose their connection to the car's receiver because of shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or main dealer can reprogram your key fob to get it functioning again. In the event that resetting and repairing your key fob doesn't work, it could be time to replace it completely.