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How to Fix a Key Fob That isn't Working

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

If your backup remote can unlock and lock the doors of your car, then it is most likely that the primary remote isn't working. The majority of car remote key malfunctions are caused by circuitry or battery problems.

Battery


It is not unusual for the battery inside the car key fob to degrade. It is easy to replace the battery. However it is crucial to select the right kind. You can check your owner's guide or contact the manufacturer to inquire about the right type. It's also a good idea to examine the battery compartment carefully since dead batteries may leak caustic chemicals that can cause damage to the remote. If replacing the battery does not solve the issue, there may be other issues requiring professional attention. If the buttons are stuck or broken for instance it might be necessary to disassemble the remote and rework each component. You can also try reprogramming the vehicle to recognize the new remote.

Buttons

Key fobs may become dirty and worn out from repeated use. It is not uncommon to have buttons stop functioning, or require a hard push to make them work. This can be a hassle especially when you're away from your home and you need to start your car. Fortunately, even worn out or broken buttons can usually be fixed with a little time and some of the materials you may already have around the house.

First, check that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully open the remote and inspect the circuit board. Examine for signs of rust or other indications that the buttons have been damaged or worn. For instance there could be conductive paint missing. Then, using a Q-tip dipped in alcohol to gently clean any membrane contacts that are worn or have conductive paint missing. Do not rub too vigorously as this can damage 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 an unattached solder connection. Soldering them back to their original position will restore the button's functionality in the event that this is the situation. The same process can be used to restore functionality to any other loose connections within the fob.

If any of the rubber buttons at the front of the keyfob isn't functioning or require to be pressed extremely hard, the graphite disks at the back of the button might have worn out and require replacement. key fob repair near me is usually done by rubbing a pencil on the disks, which should bring the button back to its original state.

If all of this doesn't help, or if the button still does not respond to a firm press, then it may be because the circuit board itself is damaged. It is possible to fix this by a quick clean, and re-soldering, but it is ideal to have a spare fob available in the event this method doesn't work for you.

Circuitry

The circuit board inside your remote control could be dirty, regardless of whether the buttons on the key fob are working or not. This problem can be resolved through a thorough examination. Water and broken cases are the most frequent causes of boards that are dirty. A damaged case could let water and other debris to enter the circuit board, causing it to short. Water can also damage pins and connectors that are small on the board called via's.

If you're skilled enough to open your key fob, and aren't afraid of making an mess, you can take the buttons out of their sockets and then solder new ones. It's also worth checking the connections between battery terminals. They can become very dirty and if they're loose, the buttons might not work or may even remain in their down position. Soldering the terminals and buttons back in their place is generally all that's needed to return the key fob that is not working to functioning condition.

Non-Remote Transponder Chips

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

If you're able to open up a sealed non-remote key fob and are able to bear the mess, you can easily remove the circuit board and check the fuse using an instrument to verify diode function. If you're not comfortable doing this, visit your local hardware store or Oreilly's, and they will usually have a RFID frequency tester that can let you know if the key fob is sending signals.

Programming

Key fobs take many abuses and aren't indestructible. remote key fob repair may lose their connection with the receiver inside your vehicle because of shocks or a low-battery, which requires changing the program. A professional auto locksmith, or main dealer can reprogram the key fob and get it back up and running again. If resetting or replacing your keyfob does not work it may be necessary to replace it.

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