How to Fix a Key Fob That isn't Working
If your key fob doesn't work, a few easy steps can be taken to fix it. The first step is to be sure that it's not the backup remote.
If the backup remote is able to lock and unlock your car door, then there is likely an issue with the primary remote. Most car remote key failures result from battery or circuitry problems.
view site… is not uncommon for the battery in the key fob for cars to wear out. It is easy to replace the battery. However, it is important that you choose the right kind. You can consult your owner's manual or call the manufacturer to determine the correct type. It is also a good idea to inspect the battery compartment with care since dead batteries may leak caustic chemicals that can harm the remote. If changing the batteries doesn't solve the problem it could be that there are other issues that require professional attention. For instance, if buttons appear stuck or broken it could be necessary to disassemble the remote and rework its components. You can also try reprogramming your car to recognize the new key fob.
Buttons
Key fobs may become dirty and worn-out from frequent use. This is not unusual however it can cause buttons to cease working or require a very long press to function. This can be very frustrating especially when you're away from home and you need to start your car. Fortunately, even worn out or broken buttons can usually be fixed with a bit of time and a few materials you might already have in the house.
First, make sure the batteries are properly charged 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 or damaged, such as missing the conductive paint. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has become damaged or where conductive paint is missing. Don't rub too hard in order to damage the conductive paint, and block the button from firing when it is pressed.
Examine the battery connector's terminals for loose solder connections. If key repair service is the case, simply connecting them back may bring back function to the button. You can use the same method to restore functionality to any other loose connection inside the fob.
If any of the rubber buttons located at the front of the keyfob aren't working or require being press very hard, the graphite disks at the back of the button may have worn out and need to replaced. You can usually do this by rubbing a pen over the disks. This should bring the button back to life.
If none of this is useful or if the button does not respond to a hard press, then it may be because the circuit board itself is damaged. This can be fixed 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 does not work for you.
Circuitry
The circuit board inside the remote control could be dirty regardless of whether the buttons on the key fob function or not. The issue can be solved by a thorough inspection. Water and broken cases are the most common causes of boards that are dirty. ignition key repair near me broken case can allow water and other debris into the circuit board, which can cause it to short. Water can also eat away at pins and connectors that are small on the board, referred to as via's.
If you're able to open your key fob, and you don't mind making some mess, we can remove the buttons from their sockets and solder in new ones. Also, it's worth checking the connections between battery terminals. They can get very dirty and if they're loose the buttons might not work or may even remain in their down position. Soldering the terminals and buttons back in place is usually all it takes to restore the key fob that is not working to working order.
Non-Remote Transponder Chips
The non-remote chips sealed in a sealed case are more durable than their remote fobs, but they are susceptible to cracking in the event of a hole being drilled in them, or when a door handle for a car or lawnmowers is pushed over them. The failure of the fuse is usually to blame for non-remote chip failures.
If you're not confident opening the key fob, remove the circuitboard and utilize a multimeter to verify that the diode is working correctly. If you're not confident doing this, go to your local hardware store or the Oreilly's and they'll usually have a RFID frequency tester that can let you know whether the key fob sending a signal.
Programming
Key fobs take a lot of abuse and aren't impervious to damage. They can break their connection with the receiver inside your vehicle because of shocks or a low-battery, which requires the reprogramming. A professional auto locksmith or a main dealer can reprogram your key fob and get it working again. If resetting or replacing your key fob fails it is possible to replace it.