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How to Fix a Key Fob That isn't Working

If your key fob doesn't work, you can fix it by following some simple steps. First, check to make sure it's not your backup remote.

If your backup remote cannot unlock and lock the doors of your car, then it is likely that the main remote is not working. The most common causes of car key fob repair remote key failure are circuitry or battery issues.

Battery

It is not uncommon to find a battery on the key repair near me fob for cars to get worn out. It is simple to replace the battery. However, it is important that you use the correct type. You can consult your owner's guide or contact the manufacturer to find out the correct type. It is also important to inspect the battery compartment, as batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the battery doesn't fix the issue, there may be other issues that require professional attention. For instance, if buttons appear stuck or damaged, it may be necessary to take the remote apart and rework its components. You could also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs may become dirty and worn-out from frequent use. This is not uncommon however it can cause buttons to stop functioning or require a long press to work. This can be very frustrating especially if you're away from home and you need to start your car. Even worn-out or malfunctioning buttons are often fixable with a bit of time and materials you already have at home.

First, ensure that the batteries are charged correctly and that the indentation on the back of the button is filled. Then, carefully open up the remote and look at the circuit board. Check for signs of corrosion or other signs that the buttons are worn out or damaged, like missing paint that is conductive. Then, using a Q-tip that has been dipped in alcohol, gently clean any membrane contacts that have become worn or have conductive paint missing. Do not rub too vigorously as this can damage the conductive paint, and block the button from firing when you press it.

Also, make sure to inspect the battery connector's terminals to ensure any loose solder connections. Soldering them back to their original position will restore the button's functionality in the event that this is the case. The same method can be used to restore function to any loose connections within the fob.

If, for instance, any of the buttons made of rubber that are on the front of the key fob have stopped working or require a difficult press to function it is likely that the graphite disks at the back of the button are wearing out and require replacement. This is usually done by rubbing a pencil across the disks, which will bring the button back to its original state.

If none of this is useful, or if the button doesn't respond to a hard press It could be that the circuit board itself is damaged. This can sometimes be repaired by a quick clean and refitting, but it's best to have an extra fob on hand in the event that this method doesn't work for you.

Circuitry

Whether or not the key fob buttons function the circuit board in your remote may be dirty. This problem can be resolved through a thorough examination. The most common causes for dirty circuit boards is water and broken cases. A broken case allows water and other debris to pass through and short circuit the electronics. Water can also eat away at pins and small connectors on the board, which are known as via's.

If you're skilled enough to open your key fob and aren't afraid of making a mess, we can remove the buttons from their sockets and solder in new ones. It's also worth looking at the battery terminal connections. If they are loose, the buttons could not function or get stuck in their down position. Soldering the terminals and buttons back into place is typically all it takes to restore the key fob that is not working to working condition.

Non-Remote transponder chips

Sealed non-remote transponder chips are much more durable than remote fobs that contain them but they can still be cracked by a hole drilled into them or run over by a lawnmowers or car door handle. Most of the time non-remote key repair transponder chip malfunctions can be blamed on an exploded fuse.

If you're not comfortable opening the key fob, you may remove the circuitboard and utilize a multimeter to determine if the diode is functioning correctly. If you're not sure with this, visit your local Oreilly or hardware store and use their RF frequency tester. This will let you know whether the key fob is sending signals.

Programming

Key fobs are not indestructible and can be damaged by a lot of things. They can break their connection with the receiver in your vehicle due to shocks or a low-battery, which requires changing the program. A professional auto locksmith, or main dealer, can reprogram your keyfob to get it working again. In the event that resetting and fixing your key fob isn't working, Remote Key Repair it could be time to replace it completely.