20 Trailblazers Leading The Way In Remote Key Repair
How to Fix a Key Fob That isn't Working
If your key fob does not work, you can fix it by following some simple steps. First, check to make sure it's not your backup remote.
If the backup is able to lock and unlock your car doors it is most likely an issue with the main remote. The most common causes for key problems with your car remote are battery or circuitry issues.
Battery
The battery inside the key fob may be worn out over time. It is fairly easy to replace the battery, however it is important to ensure you choose the correct type and you can consult your owner's manual or contact the manufacturer's dealer to find out what kind of battery you need. It is also important to inspect the battery compartment, since batteries that are not working properly can release caustic chemicals which can damage the remote. If replacing G28 Car Keys doesn't solve the issue, it may be that there are other issues that require attention by a professional. For example, if buttons seem to be 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 device.
Buttons
Key fobs can get dirty and worn-out from repeated use. It is not common for buttons to stop working, or to require a hefty push to make them work. This can be frustrating particularly when you're away from home and you need to switch on your car. Fortunately, even worn-out or damaged buttons can be fixed with a little time and a few materials you may already have around the home.
First, ensure that the batteries are charged correctly and that the indentation on the back of the button is filled. Then, carefully remove the remote and look at the circuit board. Check for signs of rust or other signs the buttons have been damaged or worn. For example there could be conductive paint missing. Use a Q-tip, dipped in alcohol to gently clean any membrane contact that has become worn out or where conductive painting is missing. Do not rub too vigorously as this can damage the conductive paint and stop the button from firing when it is pressed.
Also, make sure to inspect the battery connector terminals for any loose solder connections. If this is the case, simply soldering them back in place could bring back function to the button. You can follow the same method to restore functionality to any other loose connection within the fob.
If any of the rubber buttons located at the front of the keyfob are not working or require being press extremely hard the graphite disks at the back of the button could have worn out and will need to replaced. This can usually be done by rubbing a pencil across the disks, which should bring the button back to its original state.
If none of this is helpful, or if the button doesn't respond to a hard press, then it may be because the circuit board itself has gone bad. It is possible to fix the issue by cleaning and re-soldering the button, but you should have an extra in case it doesn't work.
Circuitry
Whether or not the keys fob buttons are functioning, the circuit board inside your remote might be dirty. This problem can be resolved through a thorough examination. The most common causes of dirty circuit boards are water and broken cases. A damaged case allows water and other debris to enter and short circuit the electronic components. Water can also damage pins and connectors that are small on the board, referred to as via's.

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 battery terminal connections. They can get very dirty and if they're loose the buttons might not function or even stay in their down position. Soldering the terminals and buttons back in their place is generally all that's needed to return a non-working key fob to functioning condition.
Non-Remote transponder chips
The non-remote chips sealed in a sealed case are more durable than remote fobs, however they are susceptible to breaking in the event of a hole being drilled in them or when a door handle for a car or lawnmowers is pushed over them. The failure of the fuse is usually to blame for non-remote chips failures.
If you're not confident opening the key fob, remove the circuitboard and utilize a multimeter to verify that the diode is operating properly. If you don't feel comfortable with this, you can go to your local Oreilly or hardware store and test their RF frequency tester. This will inform you whether the key fob sends signals.
Programming
Key fobs aren't indestructible and can be damaged by a lot of things. They may lose their connection to the receiver in your car due to shock or a low battery, which calls for the reprogramming. A professional auto locksmith or a dealer in the main can reprogram your keyfob to get it up and running again. If resetting or repairing the keyfob is not working it may be necessary to replace it.