How to Fix a Key Fob That isn't Working
If your key fob isn't working A few easy steps can be taken to fix it. The first step is to be sure it's not the backup remote.
If the backup can lock and unlock your car doors, then there is likely an issue with the primary remote. The most common causes for car remote key failure are circuitry or battery issues.
Battery
It is not unusual for the battery in the key fob for cars to wear out. It is easy to replace a battery. However remote key fob repair is essential that you use the correct type. You can check your owner's manual or call the manufacturer to inquire about the right type. It is also a good idea to inspect the battery compartment thoroughly since dead batteries may leak harmful chemicals that can harm the remote. If changing the batteries does not solve the problem it could be that there are other issues that require attention by a professional. If buttons are damaged or stuck, for example, it may be necessary disassemble the remote and rework each component. You could also try reprogramming the vehicle to recognize the new remote.
Buttons
Key fobs can become dirty and worn out from repeated use. It is not uncommon to have buttons stop functioning, or require a long press to get them working. This can be extremely frustrating, especially if you are away from home and need to start your vehicle. Even worn-out or malfunctioning buttons can be fixed with a bit of time and the tools you already have at home.
First, check that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully open up the remote and examine the circuit board. Examine for signs of rust or other indications that buttons are worn out or damaged, like missing conductive paint. Utilizing the Q-tip, dipped in alcohol to gently clean any membrane contacts that are worn or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint, and block the button from firing when it is pressed.
Also, make sure to inspect the battery connector terminals for any loose solder connections. Soldering them back in place can restore the button's functionality in the event that this is the case. The same process can be used to restore function to any other loose connections in the fob.
In the end, if any of the rubber buttons on the front of the key fob stop functioning or require a difficult press to function it is likely that the graphite disks at the back of the button are wearing down and need to be replaced. This can usually be done by rubbing a pencil across the disks, which should bring the button back to life.
If none of these solutions work or you not be able to get the button respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix this by a quick clean, and refitting, but it's recommended to have an additional fob on hand in the event that this method fails for you.
Circuitry
If the keys fob buttons are functioning, the circuit board inside your remote may be dirty. The issue can be solved through a thorough examination. The most frequent causes of dirty circuit boards is water and broken cases. A damaged case allows water and other debris to get in and short circuit the electronics. 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 don't mind making some mess, we can remove the buttons from their sockets and solder in new ones. It's also worth checking the battery terminal connections. If they're loose, the buttons might not function or get stuck in their down position. Soldering the terminals, and putting the button back in place is usually all it takes to restore the key fob that is not working to working order.
Non-Remote transponder chips
Sealed non-remote transponder chips are more durable than remote fobs that contain them however they are still susceptible to being damaged by a hole that is made in them or pushed over by a lawnmowers or car door handle. The failure of the fuse is usually the cause of non-remote chip failures.
If you're able to remove a key fob that is sealed and can tolerate the mess, you can take off the circuit board and test the fuse using an instrument to verify diode function. If you're not comfortable doing this, visit your local hardware store or the Oreilly's and they will usually have a radio frequency tester that can tell you if the key fob is transmitting a signal.
Programming
Key fobs aren't indestructible and can be damaged by a lot of things. They can lose their pairing with the receiver in your vehicle because of shocks or a low-battery, which requires the reprogramming. A professional auto locksmith, or a dealer in the main, can reprogram your keyfob and get it working again. In just click the next article that resetting and repairing your key fob isn't working, it could be time to replace it all over again.