How to Fix a Key Fob That isn't Working
If your key fob won't work then you can fix it by following a few simple steps. The first step is to be sure it's not the backup remote.
If car remote key repair near me is unable to unlock and lock the doors of your car, it is likely that the primary remote isn't functioning. The most common causes for car remote key failure are circuitry or battery issues.
Battery
It is not uncommon for the battery in the car key fob to wear out. It is simple to replace batteries. However it is essential to select the right type. You can consult the owner's manual or contact the manufacturer to determine the correct type. It's recommended to inspect the battery compartment with care because dead batteries can release caustic chemicals that could cause damage to the remote. If replacing the battery does not fix the problem there could be other issues that require attention from a professional. For instance, if buttons appear stuck or damaged It may be necessary to take the remote apart and rework its components. It is also possible to reprogramme the vehicle to recognize the new device.
Buttons
Through repeated use, key fobs may become worn and dirty. This is not atypical, but it can cause buttons to stop functioning or require a hard press for them to function. This can be a hassle, especially when you are away from your home and you need to switch on your car. Fortunately, even worn-out or malfunctioning buttons can often be fixed with a little time and a few materials you might already have in the home.
First, verify that the batteries have been correctly installed and that the indentation on the back of the button has been filled. Then, carefully open up the remote and inspect the circuit board. Check for signs of rust or other indications that the buttons have been damaged or worn. For example the paint that conducts electricity could be missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has become damaged or has conductive paint missing. Avoid rubbing too hard as this can erode the conductive paint and block the button from firing when it is pressed.
Also, carefully check the battery connector terminals for an unattached solder connection. Soldering them back into place will restore the button's functionality in the event that this is the case. You can follow the same method to restore functionality to any other loose connection within the fob.
If, for instance, any of the buttons made of rubber on the front of the key fob have stopped working or require a hard press to work, it is likely that the graphite disks at the back of the button are wearing down and require replacement. This is usually done by rubbing a pencil on the disks, which should bring the button back to its original state.
If none of these solutions work or you cannot get the button to respond when you press it hard, it is possible that the circuitry has failed. It is possible to fix the issue by cleaning and re-soldering the button however, you should have a spare in case it does not work.
Circuitry
The circuit board in your remote control may be dirty regardless of whether the buttons on the key fob work or not. This issue can be fixed through a thorough examination. Broken and damaged cases are the most common causes of dirty boards. A broken case can let water and other debris to enter the circuit board, which can cause it to short. Water can also damage pins and vias, which are the tiny connectors found on the board.
If you're able to open your key fob, and you're not afraid of a little mess, we can take off the buttons and solder new ones in their place. It's also worth checking the battery terminal connections. If they're loose, the buttons could not function properly or become stuck in their down position. Soldering the terminals and button's back into place is typically all that's needed 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 they are contained in, but they can still be cracked by a hole made in them or pushed over by a lawnmower or car door handle. Fuse failures are usually to blame for non-remote chips failures.
If you are not comfortable opening the key fob, take the circuit board off and use a multimeter to check that the diode is operating properly. If you don't feel comfortable with this, go to your local Oreilly or hardware store and test their RF frequency tester. This will tell you whether the key fob is sending signals.
Programming
Key fobs aren't impervious to destruction and can be damaged through a variety of causes. They can break their connection with the receiver in your vehicle due to shocks or a low battery, which calls for the reprogramming. A professional auto locksmith or the main dealer can reprogram the key fob and get it back working again. If resetting or fixing your key fob fails it may be necessary to replace it.