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How to Fix a Key Fob That isn't Working If your key fob won't work then you can fix it by following just a few steps. First, check to make sure it's not the backup remote. If your backup remote cannot unlock and lock the doors of your vehicle, it is most likely that the primary remote is not working. Most problems with car remote keys are caused by circuitry or battery problems. Battery The battery in the key fob could wear out over time. It is easy to replace the battery. However, it is important that you choose the right kind. You can refer to your owner's guide or contact the manufacturer to inquire about the correct type. It is recommended to examine the battery compartment carefully, as dead batteries sometimes release caustic chemicals that could cause damage to the remote. If changing the batteries does not solve the issue, it may be that there are other issues that require professional attention. For key fob repair service near me , if the buttons appear stuck or damaged it could be necessary to take the remote apart and rebuild its components. You can also try reprogramming the vehicle to recognize the new device. Buttons Key fobs can become dirty and worn-out from repeated use. It is not uncommon for buttons to cease working, or to require a hard press to get them working. This can be a hassle, especially when you are away from home and have to switch on your car. Fortunately, even worn out or damaged buttons can be fixed with a bit of time and a few materials you may already have around the home. First, check that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully remove the remote and look at the circuit board. Look for signs of corrosion or other signs that the buttons are worn or damaged, such as missing the conductive paint. Use a Q-tip dipped in rubbing alcohol, gently clean any membrane contacts that have become damaged or where conductive paint is missing. Do not rub too vigorously in order to 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, simply connecting them back may bring back function to the button. The same process can be used to restore function to any loose connections in the fob. If any of the rubber buttons at the front of the keyfob isn't functioning or require to be press extremely hard, the graphite disks at the back of the button might have worn out and need to replaced. This is usually done by rubbing a pencil over the disks, which will bring the button back to life. If none of this is helpful, or if the button still doesn't respond to a hard push, then it may be the case that the circuit board itself is damaged. This can sometimes be repaired by a quick clean and replacing the solder, but it is best to have an extra fob in case this method fails for you. Circuitry The circuit board in your remote control could be dirty, regardless of whether the buttons on the key fob are working or not. A very thorough inspection will usually resolve this problem. Broken cases and water are the most common causes of dirty boards. A broken case can allow water and other debris to enter the circuit board, which can cause it to short. Water can also eat through pins and vias, which are the tiny connectors that are found on the board. If you're able to open your key fob and you don't mind making a mess, we can remove the buttons from their sockets and then solder new ones. It's also worth checking the battery terminal connections. They can get very filthy and if they're not tight enough, the buttons might not function or may even remain in their down position. Soldering the terminals back to their original positions is often enough to return a malfunctioning fob to working. Non-Remote transponder chips Sealed non-remote transponder chips are more durable than the remote fobs that contain them but they can 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 transponder chip failures could be attributed to blowing fuses. If you are not comfortable opening the key fob, you can take the circuit board off and use a multimeter to verify that the diode is operating correctly. If you're not confident doing this, head to your local hardware store or the Oreilly's and they'll usually have an RFID frequency tester that can determine if the key fob is sending a signal. Programming Key fobs are not indestructible and are susceptible to damage by a variety of factors. They may lose their connection to the receiver in your car due to shock or low battery, which calls for them to be reprogrammed. A professional auto locksmith or dealer can reprogram your key fob and get it back up and running. In the event that resetting or repairing your key fob isn't working it could be the time to replace it all over again.