How to Fix a Key Fob That isn't Working

If your key fob doesn't work There are a few simple steps that can fix it. First, make sure that it's not your backup remote.

If your backup remote cannot lock and unlock the doors of your car, it is likely that the main remote isn't functioning. Most car keys repairs near me remote key failures are caused by battery or circuitry problems.

Battery

The battery in the key fob may be worn out over time. It is simple to replace the battery. However it is essential that you use the correct kind. You can check the owner's manual or contact the manufacturer to inquire about the right kind. It's recommended to inspect the battery compartment thoroughly because dead batteries can release caustic chemicals that could damage the remote. If replacing the battery does not fix the problem, there may be other issues requiring professional attention. For example, if buttons seem stuck or broken It may be necessary to disassemble the remote and rework its components. You can also try reprogramming the vehicle to recognize the new device.

Buttons

Due to repeated use, key fobs may wear out and become dirty. This is not uncommon however, it can cause buttons to cease functioning or require a hard press for them to function. This can be very frustrating particularly if you're out of town and need to start your vehicle. Even malfunctioning or worn-out buttons can be fixed with a little effort and the tools you already have at home.

First, check that the batteries are properly charged 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 indications of rust or other indications that the buttons have been damaged or worn out. For example the paint that conducts electricity could be missing. Use a Q-tip that has been dipped in alcohol, gently clean any membrane contacts that have damaged or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint, and block the button from firing when pressed.

Also, carefully check the battery connector terminals for an unattached solder connection. If this is the case, reconnecting them can restore function to the button. You can follow the same process to restore functionality to any other loose connection in the fob.

If any of the rubber buttons at the front of the keyfob are not working or need to be press extremely hard the graphite disks on the back of the button might have worn out and keyrepair require replacement. You can usually do this by rubbing a pencil over the disks. This should bring the button back to life.

If none of these solutions work, or keyrepair if you still cannot get the button to respond when you press it hard, it is possible that the circuitry is failing. It is possible to fix this with a quick clean and re-soldering, but it is best to have an extra fob on hand in the event that this method doesn't work for you.

Circuitry

The circuit board in the 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 let water and other debris to enter the circuit board, which can cause it to short out. Water can also damage pins and small connectors on the board, referred to as via's.

If you're able to open your key fob and don't mind making some mess, we can take the buttons out of their sockets and then solder new ones. It's also worth looking at the battery terminal connections. They can become extremely dirty and if they're loose the buttons may not work or even stay in their down position. Soldering the terminals and buttons back in place is usually all that's needed to return keys that are not in working condition.

Non-Remote transponder chips

The non-remote chips sealed in a sealed case are more durable than their remote fobs, however they are susceptible to breaking when a hole is made into them or in the event that a door handle of a car or Keyrepair lawnmower runs over them. Most of the time non-remote transponder chip failures can be attributed to blowing fuses.

If you're not comfortable opening the key fob, you may take the circuit board off and use a multimeter to check that the diode is working properly. If you're not sure with this, visit your local Oreilly or hardware store and use their RF frequency tester. This will tell you whether the key fob transmits a signal.

Programming

Key fobs take lots of abuse and aren't indestructible. They can lose their pairing to the car's receiver due to shock or low battery, which calls for them to be reprogrammed. A professional auto locksmith or the main dealer, can reprogram your keyfob to get it functioning again. If resetting or fixing the keyfob is not working it may be necessary to replace it.