How to Fix a Key Fob That isn't Working
If your key fob doesn't work A few easy steps can fix it. 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 working. Most car remote key failures result from circuitry or battery issues.
Battery
The battery in the key fob may wear out over time. It is simple to replace the battery. However, it is important to select the right kind. You can consult the owner's manual or contact the manufacturer to inquire about the correct type. It is also essential to examine the battery compartment as dead batteries can leak caustic chemicals which can damage the remote. If replacing the batteries doesn't solve the issue, it may be that there are other issues that require attention by a professional. For instance, if the buttons seem stuck or damaged It may be necessary to disassemble the remote and rebuild its components. You could also try reprogramming your vehicle to recognize the new key fob.
Buttons
Through frequent use, key fobs could wear out and become dirty. This is not atypical however it can cause buttons to stop functioning or require a long press to work. This can be very frustrating particularly when you're away from home and have to turn on your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and some of the materials you might already have in the home.
First, check that the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open the remote and look at 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 visit the following web page -tip, dipped in alcohol to gently clean any membrane contact that has worn out or where conductive paint is missing. Be careful not to rub too hard, since this could cause damage to the conductive paint and stop the button from firing when it is pressed.
Also, make sure to inspect the battery connector's terminals to ensure a loose solder connection. Soldering them back to their original position will allow the button to function again in the event that this is the situation. The same procedure can be used to restore function to any other loose connections within the fob.
If any of the rubber buttons located at the front of the keyfob are not working or require being press very hard the graphite disks on the back of the button might have worn out and require replacement. It is usually done by rubbing a pen across the disks. This should bring the button to life.
If none of these solutions work or you not be able to get the button respond when pressed hard, it is possible that the circuitry is failing. It is possible to fix this by cleaning and re-soldering the button but you should also have an extra in case it does not work.
Circuitry
Whether or not the key fob buttons function the circuit board in your remote might be dirty. A thorough inspection is often enough to resolve this problem. The most frequent causes of dirty circuit boards is water and broken cases. A damaged case can allow water and other debris to pass through and short out the electronic components. Water can also eat 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 some mess, we can take the buttons out of their sockets and then solder new ones. mobile car key repair 's also worth looking at the battery terminal connections. If they are loose, the buttons could not work or even become stuck in their down position. Soldering the terminals and buttons to their original positions is often enough to bring a non-working fob to working.
Non-Remote transponder chips
The sealed non-remote chips are more durable than remote fobs. However, they are susceptible to cracking if a hole is drilled in them, or when a door handle for a car or lawnmower runs over them. The failure of the fuse is usually to blame for non-remote chips failures.
If you're able to remove a sealed non-remote key fob and are willing to put up with the mess, you can easily remove the circuit board and test the fuse using a multimeter for proper diode function. If you're not sure with this, go to your local Oreilly or hardware store and test their RF frequency tester. This will let you know whether the key fob sends an RF signal.
Programming
Key fobs aren't indestructible and are susceptible to damage by a variety of factors. They can lose their pairing to the receiver in your car due to shock or low battery, which calls for them to be reprogrammed. A professional auto locksmith or a dealer in the main, can reprogram your keyfob to get it up and running again. If resetting or replacing your key fob fails it may be necessary to replace it.