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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 with a few simple steps. First, ensure that it's not your backup remote.
If your backup remote can unlock and lock the doors of your vehicle, it is likely that the main remote isn't working. key fob repair near me are caused by circuitry or battery issues.
Battery
The battery in the key fob could get worn out over the course of time. It is easy to replace the battery. However it is crucial to select the right type. You can refer to the owner's manual or contact the manufacturer to determine the right type. It is recommended to examine the battery compartment thoroughly because dead batteries can release caustic chemicals that could harm the remote. If replacing car remote key repair doesn't solve the problem, it may be that there are other issues that require attention from a professional. For example, if buttons seem to be stuck or broken, it may be necessary to take the remote apart and rework its parts. You could also try reprogramming your car to recognize the new key fob.
Buttons
Through frequent use, key fobs can get dirty and worn. This is not uncommon, but it can cause buttons to cease working or require a long press to function. This can be extremely frustrating especially if you're away from home and you need to start your car. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and some of the materials you might already have in the house.
First, verify that the batteries are correctly installed and that the indentation at the back of the button is filled. Open the remote carefully and examine the circuit board. Check for evidence of rust, or other indications that the buttons are worn or damaged. For instance, conductive paint may be missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that is damaged or has conductive paint missing. Don't rub too hard as this can damage the conductive paint, and block the button from firing when pressed.
Also, carefully 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 function to any other loose connections inside the fob.
Finally, if any of the buttons made of rubber on the front of the key fob have stopped working or require a long press to function it is likely that the graphite disks that are on the back of the button are wearing down and require replacement. This is usually done by rubbing a pencil across 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 hard push It could be that the circuit board itself is damaged. It is possible to fix the issue by cleaning and re-soldering your fob but you should also have a spare in case it doesn't work.
Circuitry
If the key fob buttons are working, the circuit board inside the remote could be dirty. This problem can be resolved by a thorough inspection. Broken and damaged cases are the most common causes of boards that are dirty. A damaged case allows water and other debris to enter and short out the electronic components. Water can also damage pins and vias, which are small connectors on the board.
If you're able to open your key fob, and aren't afraid of making some mess, we can remove the buttons from their sockets and then solder new ones. It's also worth checking the connections between the battery terminals. If they're loose, the buttons may not work or even become stuck in their down position. Soldering terminals and buttons back to their original positions is often enough to bring a non-working fob to working.
Non-Remote transponder chips
Sealed non-remote transponder chips are more durable than remote fobs they are contained in, but they can still be cracked by a hole made in them or pushed over by a lawnmowers or car door handle. Failures of the fuse are typically to blame for non-remote chips failures.
If you're able to open up the sealed key fob and can tolerate the mess, you can take off the circuit board and check the fuse using an instrument to verify diode function. If you're unsure about doing this, head to your local hardware store or Oreilly's, and they'll usually have an RFID frequency tester that can let you know whether the key fob sending a signal.
Programming
Key fobs take many abuses and aren't indestructible. They may lose their connection with the receiver inside your vehicle due to shocks or low battery, requiring the reprogramming. A professional auto locksmith, or main dealer can reprogram the key fob and get it back working again. In the event that resetting and fixing your key fob doesn't work, it could be time to replace it completely.