How to Fix a Key Fob That isn't Working

If your key fob does not work then you can fix it by following a few simple steps. The first step is to make sure it's not the backup remote.

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

Battery

The battery in the key fob could be worn out over time. It is fairly easy to change out the battery, however it is crucial to make sure that you use the right type that you can refer to the owner's manual or talk to the manufacturer's dealer to find out what kind of battery you need. It is also crucial to examine the battery compartment as batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the batteries doesn't solve the issue it could be that there are other issues that require professional attention. If buttons are damaged or stuck for instance it might be necessary to take the remote apart and rework each component. It is also possible to reprogramme the vehicle to recognize the new device.

Buttons

Key fobs can get filthy and worn out due to frequent use. This is not unusual, but it can cause buttons to cease functioning or require a difficult press to get them to work. This can be extremely frustrating particularly if you're out of town and need to start your car. Even worn-out or malfunctioning buttons are often fixable with a little time and the tools you already have at home.

First, make sure 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 indications of rust or other signs the buttons have been worn or damaged. For example the paint that conducts electricity could be missing. Utilizing the Q-tip, dipped in alcohol to gently clean any membrane contacts that are damaged or have conductive paint missing. Be careful not to rub too hard, since this could cause damage to the conductive paint and stop the button from firing when it is pressed.

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

If any of the rubber buttons located at the front of the keyfob are not working or require being pressed very hard the graphite disks at the back of the button could have worn out and need to replaced. It is usually done by rubbing a pencil over the disks. This should bring the button to life.

If none of this is helpful, or if the button does not respond to a hard press, then it may be that the circuit board itself has gone bad. It is possible to fix the issue by cleaning and re-soldering the button, but you should have an extra in case it does not work.

Circuitry

Whether or not the key fob buttons are working, the circuit board inside the remote could be dirty. This problem can be resolved through a thorough examination. The most common causes of dirty circuit boards is water and damaged cases. A damaged case allows water and other debris to pass through and short circuit the electronic car key repair near me components. Water can also damage pins and small connectors on the board called via's.

If you're able to open up your key fob and aren't afraid of a little mess, we can de-solder the buttons and solder new ones in their place. Also, you should check the connections between battery terminals. If they are loose, the buttons could not function or get stuck in their down position. Soldering the terminals and buttons to their original positions is often enough to bring a non-working fob to working.

Non-Remote Transponder Chips

Sealed non-remote transponder chip are more durable than the remote fobs they are contained in, but they can still be damaged by a hole that is drilled into them or run over by a lawnmowers blade or car door key keyless entry repair near me (look at more info) handle. Failures of the fuse are typically to blame for non-remote chips failures.

If you're not confident opening the key fob, remove the circuitboard and use a multimeter to verify that the diode is functioning properly. If you're not sure with this, visit your local Oreilly or hardware store and utilize their RF frequency tester. This will inform you whether the key fob is sending a signal.

Programming

Key fobs are not indestructible and can be damaged through a variety of causes. They may lose their connection to the car key repairs near me's receiver due to shock or a low battery, requiring the reprogramming. A professional auto locksmith or a main dealer will be able to reprogram your key fob to get it working again. If resetting or fixing the keyfob is not working it may be necessary to replace it.