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How to Fix a Key Fob That isn't Working

If your key fob doesn't work and you're not sure why, you can fix it by following a few simple steps. The first step is to make sure that it's not the backup remote.

If the backup remote is able to lock and unlock your car doors, it is most likely an issue with the main remote. The most frequent causes of car remote key failure are issues with the circuitry or battery.

Battery

It is not uncommon for the battery inside a car key fob to degrade. It is quite simple to replace a battery, although it is crucial to make sure that you select the correct one and you can consult your owner's manual or contact the dealer of the manufacturer to find out what kind of battery you require. It's also a good idea to examine the battery compartment thoroughly, as dead batteries sometimes release caustic chemicals that could damage the remote. If replacing the battery does not fix the problem, there may be other issues that require attention from a professional. For instance, if the buttons seem stuck or car keys repairs near me broken it could be necessary to take the remote apart and rework its components. You could also try reprogramming the vehicle to recognize the new remote.

Buttons

Key fobs may become dirty and worn-out from frequent use. This is not unusual however it can cause buttons to stop working or require a very hard press for them to function. This can be a hassle particularly when you're away from home and you need to turn on your car. Even broken or damaged buttons can be fixed with a little effort and tools you already have at home.

First, check that the batteries are up 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 evidence of rust, or other indications that the buttons have been worn or damaged. For instance, conductive paint may be missing. Use a Q-tip that has been dipped in rubbing alcohol to gently clean any membrane contact that has worn out or has conductive paint missing. Do not rub too vigorously, as this could erode the conductive paint and stop the button from firing when pressed.

Check the battery connector's terminals carefully for any loose solder connections. If this is the case, simply connecting them back can restore function to the button. You can follow the same method to restore functionality to any other loose connection within the fob.

If, for instance, any of the buttons made of rubber on the front of the key fob have stopped functioning or require a hard press to work it is likely the graphite disks that are on the back of the button are wearing down and require replacement. You can usually do this by rubbing a pen across the disks. This will bring the button back to life.

If all of this doesn't help, or if the button still doesn't respond to a hard press It could be because the circuit board has gone bad. This can sometimes be repaired by a quick clean, and re-soldering, but it is best to have an extra fob available in the event this method doesn't work for you.

Circuitry

If the key fob buttons are working the circuit board that is inside your remote key fob repair near me may be dirty. The issue can be solved through a thorough examination. Broken and damaged cases are the most common causes of boards that are dirty. A damaged case can allow water and other debris to enter and short circuit the electronic components. Water can also get through pins and vias, which are the tiny connectors on the board.

If you're able to open your key fob, and aren't afraid of making a mess, we can remove the buttons from their sockets and then solder new ones. It's also worth looking at the battery terminal connections. They can get very filthy and if they're not tight enough, the buttons might not work or even stay in their down position. Soldering the terminals and buttons into place is usually enough to return a malfunctioning fob to a working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chip are more durable than remote fobs that have them but they can still be cracked by a hole that is drilled into them or over by a lawnmowers blade or car door Remote key Repair handle. Most of the time non-remote transponder chip malfunctions could be attributed to an exploded fuse.

If you're able to remove a sealed non-remote repair key fob fob and are willing to put up with the mess, you can remove the circuit board and test the fuse using an instrument to verify diode function. If you don't feel comfortable with this, go to your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob is sending an RF signal.

Programming

Key fobs aren't indestructible and are susceptible to damage by a lot of things. They can lose their pairing to the receiver in your car due to shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or dealer will be able to reprogram your key fob and get it functioning again. If resetting or repairing your key fob fails it is possible to replace it.