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 that it's not your backup remote.

If your backup remote is unable to unlock and lock the doors of your vehicle, it is most likely that the primary remote isn't working. The majority of mobile car key repair remote key malfunctions result from battery or circuitry problems.

Battery

The battery in a key fob can get worn out over the course of time. It is easy to replace batteries. However, it is important that you use the correct type. You can consult the owner's manual or contact the manufacturer to find out the right type. 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 solve the issue there could be other issues requiring professional attention. If the buttons are broken or stuck, for example it might be necessary to take the remote apart and rework each component. You could also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs can get dirty and worn-out from frequent use. It is not uncommon for buttons to stop functioning, or require a hard press to make them work. This can be very frustrating particularly if you're away from home and you need to start your vehicle. Fortunately, even worn-out or broken buttons can usually be fixed with a little time and some of the materials you have in the house.

First, verify that the batteries are properly placed and that the indentation at the back of the button has been filled. Then, carefully open up the remote and inspect the circuit board. Check for signs of rust or other indications that the buttons are damaged or worn. For instance the paint that conducts electricity could be missing. Use the Q-tip, dipped in alcohol to gently clean any membrane contacts that have become worn or where conductive paint is missing. Don't rub too hard in order to damage the conductive paint and stop the button from firing when it is pressed.

Examine the battery connector's terminals carefully for any loose solder connections. If this is the case, connecting them back could restore functionality to the button. The same method can be used to restore function to any loose connections inside the fob.

If any of the rubber buttons on the front of the keyfob isn't working or need to be press extremely hard the graphite disks at the back of the button may have worn out and local need to replaced. You can usually do this by rubbing a pencil over the disks. This will bring the button back to life.

If none of these solutions work or you are unable to get the button to respond when you press it hard, it could be that the circuitry is failing. It is possible to fix this by a quick clean, and re-soldering, but it is recommended to have an additional fob in case this method does not work for you.

Circuitry

The circuit board inside the remote control could be dirty, regardless of whether the buttons on the key fob function or not. A very thorough inspection is often enough to resolve this issue. Water and broken cases are the most frequent causes of dirty boards. A damaged case can allow water and other debris to get into the circuit board, which can cause it to short out. Water can also damage pins and connectors that are small on the board called via's.

If you are handy enough to open your key fob, and you don't mind making a mess, we can take the buttons out of their sockets and put in new ones. Also, you should check the connections between battery terminals. If they're loose, the buttons could not function or get stuck in their down position. Soldering terminals and buttons back to their original positions is often enough to bring a non-working fob back to working.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are more durable than remote fobs that contain them but they can still be broken by a hole being made in them or pushed over by a lawnmowers or door handle for a car keys repair near me. Fuse failures are usually to blame for non-remote chip failures.

If you're not comfortable opening the key fob, remove the circuitboard and utilize a multimeter to determine if the diode is operating correctly. If you're not comfortable doing this, go to your local hardware store or Oreilly's, and they usually have an RFID frequency tester that can let you know if the key fob is sending a signal.

Programming

Key fobs are subject to a lot of abuse and aren't impervious to damage. They can break their connection with the receiver in your vehicle due to shocks or a low-battery, which requires reprogramming. A professional auto locksmith or a main dealer will be able to reprogram your automotive key repair fob to get it functioning again. In the event that resetting and fixing your key fob repair near me fob isn't working it may be time to replace it all over again.