It's Enough! 15 Things About Remote Key Repair We're Tired Of Hearing
How to Fix a Key Fob That isn't Working
If your key fob won't work then you can fix it with some simple steps. First, make sure that it's not the backup remote.
If the backup remote is able to lock and unlock your car doors it is most likely an issue with the primary remote. Most car remote key failures result from circuitry or battery problems.
Battery
The battery inside a key fob can wear out over time. It is easy to replace the battery. However it is crucial to select the right type. You can check the owner's manual or contact the manufacturer to determine the right type. It's recommended to examine the battery compartment with care since dead batteries may release caustic chemicals that could harm the remote. If replacing the battery does not solve the issue, there may be other issues that require professional attention. For instance, if the buttons appear stuck or broken it could be necessary to disassemble the remote and rework its components. You could also try reprogramming your car to recognize the new key fob.
Buttons
From frequent use, key fobs could become worn and dirty. This is not uncommon however it can cause buttons to stop functioning or require a hard press for them to work. This can be a hassle particularly when you're away from home and you need to start your car. Even malfunctioning or worn-out buttons are often fixable with a bit of time and the tools you already have at home.
First, verify that the batteries have been correctly installed and that the indentation at the back of the button is filled. Then, carefully open the remote and look at the circuit board. Look for signs of rust or other signs the buttons have been damaged or worn. For instance there could be conductive paint missing. Utilizing the Q-tip, dipped in rubbing alcohol, gently clean any membrane contacts that have damaged or where conductive paint is missing. Don't rub too hard as this can damage the conductive paint, and block the button from firing when you press it.
Also, carefully check the battery connector terminals for a loose solder connection. If this is the case, reconnecting them can restore function to the button. The same method can be used to restore function to any other loose connections in the fob.
Finally, 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 on the back of the button are deteriorating and require replacement. This can usually be done by rubbing a pencil on the disks, which will bring the button back to working.
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 has failed. www.g28carkeys.co.uk can be fixed by a quick clean and re-soldering, but it is best to have an extra fob available in the event this method doesn't work for you.
Circuitry
The circuit board of the remote control could be dirty regardless of whether the buttons on the key fob are working or not. A thorough examination is usually enough to fix this problem. The most common causes for dirty circuit boards is water and damaged cases. A damaged case can allow water and other debris to enter and short out the electronic components. Water can also damage pins and small connectors on the board, referred to as via's.
If you're able to open your key fob and aren't afraid of making a mess, we can remove the buttons from their sockets and solder in new ones. It's also worth looking at the battery terminal connections. If they're loose, the buttons may not function properly or become stuck in their down position. Soldering the terminals and buttons back in place is usually all it takes to restore keys that are not in working condition.
Non-Remote Transponder Chips
Sealed non-remote transponder chips are more durable than remote fobs they are contained in, but they can be broken by a hole being that is drilled into them or over by a lawnmowers blade or door handle for a car. Most of the time non-remote transponder chip failures can be blamed on a blown fuse.
If you're handy enough to remove the sealed key fob and are willing to put up with the mess, you can remove the circuit board and test the fuse with a multimeter for proper diode function. If you're not comfortable doing this, head to your local hardware store or Oreilly's and they'll usually have a RF frequency tester that will tell you whether the key fob is sending a signal.
Programming
Key fobs endure a lot of abuse and aren't completely indestructible. They may lose their connection to the receiver in your car due to shock or a low battery, which calls for them to be reprogrammed. A professional auto locksmith or a main dealer will be able to reprogram your key fob to get it back up and running. In the rarer case that resetting or repairing your key fob fails, it could be time to replace it completely.