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How to Fix a Key Fob That isn't Working

If your key fob does not work and you're not sure why, 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 is unable to unlock and lock the doors of your car, then it is likely that the main remote isn't functioning. The most frequent causes of car remote key failure are battery or circuitry issues.

Battery

It is not uncommon for the battery in the key fob for cars to degrade. It is simple to replace the battery. However it is crucial that you use the correct kind. You can refer to the owner's manual or contact the manufacturer to determine the correct type. It's also a good idea to inspect the battery compartment thoroughly, as dead batteries sometimes leak harmful chemicals that can harm the remote. If replacing the battery does not solve the issue, there may be other issues that require attention from a professional. For example, if buttons appear stuck or damaged it could be necessary to disassemble the remote and rework its components. You could also try reprogramming the vehicle to recognize the new fob.

Buttons

From repeated use, key fobs may wear out and become dirty. This is not unusual, but it can cause buttons to cease working or require a hard press for them to work. This can be very frustrating especially when you're away from home and have to start your car. Fortunately, even worn out or broken buttons can usually be fixed with just a bit of time and a few items you might already have in the home.

First, make sure the batteries are up correctly and that the indentation on the back of the button is filled. Open the remote carefully and examine the circuit board. Check for signs of rust or other indications that the buttons are damaged or worn out. For instance there could be conductive paint missing. Use a Q-tip, dipped in alcohol to gently clean any membrane contact that has worn-out or has conductive paint missing. Don't rub too hard in order to damage the conductive paint, and block the button from firing when pressed.

Check the battery connector terminals carefully for any loose solder connections. Soldering them back into place will restore the button's functionality if this is the situation. The same procedure can be used to restore function to any other loose connections within the fob.

In the end, if any of the buttons made of rubber on the front of the key fob have stopped working or require a very hard press to work it is likely that the graphite disks at the back of the button are wearing down and need to be replaced. key repair shop near me is usually done by rubbing a pencil over the disks, which should bring the button back to working.

If none of this is useful or if the button still does not respond to a firm press It could be because the circuit board has become damaged. It is possible to fix the issue by cleaning and re-soldering the fob, but you should have an extra in case it does not work.


Circuitry

Whether or not the key fob buttons function, the circuit board inside your remote might be dirty. A thorough inspection is usually enough to fix this issue. The most frequent causes of dirty circuit boards are water and damaged cases. A damaged case allows water and other debris to pass through and short out the electronics. Water can also get through pins and vias, which are tiny connectors found on the board.

If you're able to remove your key fob, and you're not afraid of some mess, we can de-solder the buttons and then solder new ones in their place. It's also worth checking the connections between battery terminals. They can become very dirty and if they're loose, the buttons may not work or even stay in their down position. Soldering the terminals, and putting the button back in place is usually all it takes to restore a non-working key fob to functioning condition.

Non-Remote transponder chips

The sealed non-remote chips 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 lawnmowers is pushed over them. The majority of non-remote transponder chip malfunctions can be attributed to a blown fuse.

If you're able to open up a key fob that is sealed and are willing to put up with the mess, you can take off the circuit board and test the fuse using an instrument to verify diode function. If you're not confident doing this, visit your local hardware store or the Oreilly's and they'll usually have a radio frequency tester that can determine whether the key fob is sending a signal.

Programming

Key fobs aren't impervious to destruction and can be damaged through a variety of causes. They can break their connection with the receiver inside your vehicle because of shocks or a low battery, which calls for changing the program. A professional auto locksmith or main dealer can reprogram your key fob and get it functioning again. If resetting or fixing your key fob fails it may be necessary to replace it.

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