The Ugly Real Truth Of Remote Key Repair
How to Fix a Key Fob That isn't Working
If your key fob isn't working 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 vehicle, it is likely that the primary remote is not working. The most common causes for car remote key failure are circuitry or battery issues.
Battery
The battery inside the key fob could get worn out over the course of time. It is relatively easy to change out batteries, but it is important to ensure you select the correct one that you can refer to your owner's manual or contact the manufacturer's dealer to determine the type of battery you require. It is also essential to examine 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 fix the issue, there may be other issues requiring professional attention. For example, if buttons appear stuck or damaged it could be necessary to disassemble the remote and rebuild its components. You could also try reprogramming the vehicle to recognize the new key fob.
Buttons
From frequent use, key fobs may become worn and dirty. It is not unusual for buttons to stop working, or to require a long press to make them work. This can be extremely frustrating, especially if you are out of town and need to start your vehicle. Fortunately, even worn-out or broken remote key fob repair can usually be fixed with a little time and some of the materials you might already have in the home.
First, make sure the batteries are up correctly and that the indentation on the back of the button is filled. Then, open the remote with care and look over the circuit board. Examine for signs of rust or other signs that the buttons are worn out or damaged, like missing the conductive paint. Use a Q-tip that has been dipped in rubbing alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Don't rub too hard in order to damage the conductive paint and prevent the button from firing when it is pressed.
Also, carefully check the battery connector's terminals to ensure an unattached solder connection. Soldering them back in place will allow the button to function again If this is the situation. You can follow the same method to restore functionality to any other loose connection within the fob.
If any of the rubber buttons on the front of the keyfob isn't working or need to be press extremely hard, the graphite disks at the back of the button could have worn out and will require replacement. This can usually be done by rubbing a pencil across the disks. This should bring the button back to life.
If none of this is useful, or if the button doesn't respond to a hard press, then it may be the case that the circuit board itself is damaged. It is possible to fix this issue by cleaning and re-soldering the fob, but you should have a spare in case it does not work.
Circuitry
The circuit board in the remote control could be dirty, regardless of whether the buttons on the key fob function or not. A thorough examination is usually enough to fix this problem. Water and broken cases are the most common causes of boards that are dirty. A damaged case allows water and other debris to pass through and short circuit the electronics. Water can also destroy pins and small connectors on the board called via's.
If you're skilled enough to open your key fob, and don't mind making a mess, we can take the buttons out of their sockets and put in new ones. Also, you should check the connections between battery terminals. If they are loose, the buttons may not function or get stuck in their down position. Soldering the terminals, and putting the button back in place is usually all that's required to return a non-working key fob to functioning condition.
Non-Remote transponder chips
Sealed non-remote transponder chips are more durable than the remote fobs that contain them but they can still be damaged by a hole that is drilled into them or run over by a lawnmowers blade or door handle for a car. The failure of the fuse is usually to blame for non-remote chip failures.
If you're able to remove the sealed key fob and are willing to put up with the mess, you can remove the circuit board and check the fuse using an instrument to verify diode function. If you're unsure about doing this, head to your local hardware store or Oreilly's and they will usually have an radio frequency tester that can let you know if the key fob is sending a signal.
Programming
Key fobs aren't impervious to destruction and can be damaged through a variety of causes. They may lose their connection to the car's receiver because of shock or a low battery, requiring the reprogramming. remote key fob repair or main dealer can reprogram your key fob and get it working again. In the event that resetting or repairing your key fob doesn't work it could be the time to replace it completely.