How to Fix a Key Fob That isn't Working
If your key fob won't work then you can fix it with a few 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 likely that the main remote isn't working. The majority of car remote key malfunctions are caused by battery or circuitry problems.
Battery
The battery in the key fob could wear out over time. It is easy to replace a battery. However, it is important to select the right kind. You can check your owner's guide or contact the manufacturer to find out the correct type. It is also important to check the battery compartment, since batteries that are not working properly can release caustic chemicals which can damage the remote. If changing the battery doesn't solve the issue, there may be other issues requiring professional attention. If the buttons are stuck or broken, for example it might be necessary to remove the remote and rebuild each component. You can also try reprogramming the vehicle to recognize the new key fob.
Buttons
Key fobs can become dirty and worn-out from frequent use. This is not unusual however, it can cause buttons to cease working or require a hard press for them to work. This can be extremely frustrating especially if you're away from home and you need to start your vehicle. Fortunately, even worn-out or damaged buttons can be fixed with just a bit of time and a few materials you might already have in the house.
First, check that the batteries are properly placed and that the indentation at the back of the button has been filled. Open the remote carefully and look over the circuit board. Look for evidence of rust, or other indications that the buttons are damaged or worn. For example, conductive paint may be missing. Use a Q-tip dipped in alcohol to gently clean any membrane contacts that have damaged or where conductive paint is missing. Do not rub too vigorously in order to damage the conductive paint and prevent the button from firing when it is pressed.
Also, carefully check the battery connector terminals for any loose solder connections. Soldering them back into place will restore the button's functionality in the event that this is the situation. You can follow the same process to restore functionality to any other loose connection in the fob.
If any of the rubber buttons on the front of the keyfob isn't working or need to be pressed extremely hard the graphite disks at the back of the button may have worn out and will require replacement. You can do this by rubbing a pen over the disks. This will bring the button back to life.
If none of these solutions work, or if you still not be able to get the button respond when pressed hard, it is possible that the circuitry is failing. This can sometimes be repaired by a quick clean and replacing the solder, but it is recommended to have an additional fob available in the event this method does not work for you.
Circuitry
Whether or not the keys fob buttons are functioning, the circuit board inside your remote might be dirty. This issue can be fixed through a thorough examination. Broken cases and water are the most frequent causes of boards that are dirty. A damaged case can let water and other debris into the circuit board, which can cause it to short. Water can also get through pins and vias, which are the tiny connectors found on the board.
If car key fob repair near me to open your key fob, and you're not afraid of some mess, we can take off the buttons and then solder new ones in their place. It's also worth examining the battery terminal connections. They can become very filthy and if they're not tight enough, the buttons might not function or may even remain in their down position. Soldering the terminals and buttons to their original positions is often enough to return a malfunctioning fob back to working.
Non-Remote Transponder Chips
The sealed non-remote chips are more durable than remote fobs, but they can be cracked when a hole is made in them or when a door handle for a car or lawnmowers plows over them. Most of the time non-remote transponder chip malfunctions can be attributed to a blown fuse.
If you're handy enough to open up a sealed non-remote key fob and can tolerate the mess, you can easily remove the circuit board and examine the fuse using a multimeter to ensure that it is functioning as intended. function. If you're unsure about doing this, head to your local hardware store or the Oreilly's and they usually have a RF frequency tester that will let you know whether the key fob transmitting a signal.
Programming
Key fobs aren't indestructible and are susceptible to being damaged by a variety of factors. They can lose their pairing with the receiver in your vehicle due to shocks or a low-battery, which requires changing the program. A professional auto locksmith or dealer will be able to reprogram your key fob and get it functioning again. If resetting or fixing the keyfob is not working it is possible to replace it.