How to Fix a Key Fob That isn't Working
If your key fob won't work and you're not sure why, you can fix it with a few simple steps. The first step is to make sure that it's not the backup remote.
If your backup remote is unable to unlock and lock the doors of your car, it is likely that the main remote is not working. Most car remote key failures are caused by battery or circuitry problems.
Battery
It is not unusual to find a battery on a car key fob to degrade. It is simple to replace the battery. However it is essential to select the right type. You can check the owner's manual or contact the manufacturer to determine the right kind. It is recommended to inspect the battery compartment thoroughly since dead batteries may release caustic chemicals that could damage the remote. If changing the battery doesn't solve the issue there may be additional issues that require professional attention. If the buttons are stuck or broken for instance it might be necessary to remove the remote and rebuild each component. You can also try reprogramming your car to recognize the new key fob.
Buttons
From repeated use, key fobs can become worn and dirty. This is not unusual however it can cause buttons to cease functioning or require a difficult press to get them to function. This can be a huge hassle especially if you're away from home and need to start your vehicle. Even malfunctioning or worn-out buttons can be fixed with a bit of time and tools you already have at home.
First, check that the batteries are properly inserted and that the indentation at the back of the button has been filled. Then, carefully remove car keys repair near me and examine the circuit board. Look for signs of rust or other indications that the buttons have been damaged or worn out. For example the paint that conducts electricity could be missing. Use a Q-tip that has been dipped in rubbing alcohol to gently clean any membrane contact that has damaged or has conductive paint missing. Do not rub too vigorously, as this could erode the conductive paint and stop the button from firing when you press it.
Check the battery connector's terminals carefully for any loose solder connections. Soldering them back to their original position can restore the button's functionality in the event that this is the case. You can apply the same procedure to restore functionality to any other loose connection inside the fob.
If any of the rubber buttons on the front of the keyfob isn't working or need to be pressed very hard, the graphite disks at the back of the button might have worn out and will require replacement. This can usually be done by rubbing a pencil across the disks, which will bring the button back to life.
If none of this is useful, or if the button still doesn't respond to a hard push, then it may be because the circuit board itself is damaged. It is possible to fix this by a quick clean and replacing the solder, but it is best to have an extra fob on hand in the event that this method fails for you.
Circuitry
If the key fob buttons are working the circuit board that is inside your remote might be dirty. A thorough inspection is often enough to resolve this issue. The most common causes of dirty circuit boards is water and damaged cases. A damaged case can allow water and other debris into the circuit board, causing it to short. Water can also destroy pins and small connectors on the board, referred to as via's.
If you are handy enough to open your key fob and don't mind making an mess, you can take the buttons out of their sockets and then solder new ones. It's also worth looking at the battery terminal connections. If they are loose, the buttons could not function or get stuck in their down position. Soldering the terminals and buttons to their original positions is often enough to return a malfunctioning fob to a working condition.
Non-Remote Transponder Chips
Sealed non-remote transponder chips are much more durable than the remote fobs they are contained in, but they can still be damaged by a hole that is that is drilled into them or over by a lawnmower or car door handle. car key and repair of the fuse is usually to blame for non-remote chips failures.
If you're not confident opening the key fob, you can remove the circuitboard and utilize a multimeter to determine if the diode is operating properly. If you're not confident doing this, head to your local hardware store or Oreilly's and they usually have a radio frequency tester that can determine whether the key fob is transmitting a signal.
Programming
Key fobs endure a lot of abuse and aren't indestructible. They may lose their connection with the receiver inside your vehicle due to shocks or a low battery, which calls for changing the program. A professional auto locksmith or main dealer can reprogram your key fob and get it working again. If resetting or fixing your keyfob does not work it is possible to replace it.