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How to Fix a Key Fob That isn't Working

If your key fob isn't functioning, a few easy steps can fix it. First, repairs check to make sure it's not the backup remote.

If the backup remote is able to lock and unlock your car door, it is most likely an issue with the main remote. The most common causes for key problems with your car remote are issues with the circuitry or battery.

Battery

The battery inside the key fob could get worn out over the course of time. It is simple to replace batteries. However it is essential that you use the correct type. You can refer to your owner's guide or contact the manufacturer to determine the correct type. It is also essential to examine the battery compartment, as batteries that are not working properly can release toxic chemicals that could damage the remote. If changing the batteries doesn't solve the problem it could be because there are other issues that require professional attention. If the buttons are damaged or stuck for instance, it may be necessary disassemble the remote and rework each component. You can also try reprogramming the vehicle to recognize the new device.

Buttons

From repeated use, key fobs could wear out and become dirty. It is not unusual for buttons to stop working, or to require a long press to get them working. This can be frustrating particularly when you're away from home and you need to start your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and some of the materials you have in the house.

First, check that the batteries are properly inserted and that the indentation at the back of the button has been filled. Then, carefully open up the remote and look at the circuit board. Look for signs of corrosion or other indications that buttons are worn out or damaged, like missing conductive paint. Use a Q-tip dipped into alcohol to gently clean any membrane contact that has become damaged or where conductive paint is missing. Avoid rubbing too hard because this could damage the conductive painting and prevent the button from firing when it is the button is pressed.

Examine the battery connector's terminals for loose solder connections. If this is the case, soldering them back in place could bring back function to the button. The same procedure can be used to restore function to any loose connections in the fob.

In the end, if any of the buttons made of rubber that are on the front of the key fob aren't working or require a long press to function it is likely the graphite disks on the back of the button are deteriorating and require replacement. It is usually done by rubbing a pen over the disks. This should bring the button back to life.

If all of this doesn't help, or if the button doesn't respond to a firm press, then it may be because the circuit board itself has become damaged. This can sometimes be repaired by a quick clean, and refitting, but it's recommended to have an additional fob on hand in the event that this method does not work for you.

Circuitry

The circuit board in your remote control may be dirty regardless of whether the buttons on the key fob work or not. A thorough inspection will usually resolve this problem. Broken cases and water are the most frequent causes of boards that are dirty. A broken case can allow water and other debris to get into the circuit board, which can cause it to short out. Water can also destroy pins and small connectors on the board called via's.

If you're handy enough to open up your key fob and don't mind making a mess, we can take off the buttons and then solder new ones in their place. It's also worth checking the connections between the battery terminals. They can become extremely dirty and if they're loose, the buttons might not work or even stay in their down position. Soldering the terminals and repairs buttons to their original positions is often enough to bring a non-working fob to working.

Non-Remote Transponder Chips

The non-remote chips sealed in a sealed case are more durable than their remote fobs, however they can be cracked if a hole is drilled in them or when a door handle for a car or lawnmower runs over them. Failures of the fuse are typically to blame for non-remote chip failures.

If you're handy enough to open a key fob that is sealed and can tolerate the mess, you can easily remove the circuit board and examine the fuse using a multimeter to ensure that it is functioning as intended. function. If you're not confident doing this, head to your local hardware store or the Oreilly's and they'll usually have an RF frequency tester that will tell you whether the key fob is sending signals.

Programming

Key fobs are not indestructible and are susceptible to damage by a variety of factors. They may lose their connection to the car's receiver due to shock or low battery, which requires them to be reprogrammed. A professional auto key fob repair locksmith or the main dealer can reprogram the keyfob and get it functioning again. If resetting or fixing your key repair near me fob fails it is possible to replace it.