How to Fix a Key Fob That isn't Working
If your key fob doesn't work, you can fix it with just a few steps. First, check to make 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. Most problems with car remote keys are caused by circuitry or battery issues.
Battery
The battery in a key fob can be worn out over time. It is simple to replace the battery. However it is essential to select the right kind. You can refer to the owner's manual or contact the manufacturer to find out the correct type. It is also essential to examine the battery compartment, since batteries that are not working properly can release caustic chemicals that can harm the remote. If changing the batteries does not solve the issue, it may be that there are other issues that require attention from a professional. If the buttons are stuck or broken for instance it could be necessary to take the remote apart and rework each component. You can also try reprogramming the vehicle to recognize the new key fob.
Buttons
Key fobs can become dirty and worn out from repeated use. It is not common to have buttons stop working, or to require a long push to make them work. This can be very frustrating especially if you're away from home and need to start your vehicle. Even broken or damaged buttons are often fixable with a bit of time and the tools you already have at home.
First, check that the batteries have been correctly placed and that the indentation at the back of the button is filled. Then, carefully open up the remote and look at the circuit board. Look for signs of corrosion or other indications that the buttons are worn or damaged, like missing paint that is conductive. Then, using the Q-tip, dipped in alcohol, gently clean any membrane contacts that are worn or where conductive paint is missing. Be careful not to rub too hard, because this could damage the conductive paint and stop the button firing when pressed.
Also, carefully check the battery connector terminals for any loose solder connections. If this is the case, simply connecting them back can restore functionality to the button. You can use the same method to restore functionality to any other loose connection in the fob.
Finally, if any of the buttons made of rubber on the front of the key fob have stopped working or require a very hard press to work it is likely that the graphite disks on the back of the button are deteriorating and require replacement. This can usually be done by rubbing a pencil across the disks. This should bring the button back to its original state.
If none of these solutions work, or if you still 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 replacing the solder, but it is recommended to have an additional fob on hand in the event that this method does not work for you.
Circuitry
The circuit board of your remote control could be dirty, regardless of whether the buttons on the key fob function or not. A thorough inspection is usually enough to fix this issue. The most common causes of dirty circuit boards are water and damaged cases. A damaged case could allow water and other debris to enter the circuit board, causing it to short out. car remote key repair can also eat through pins and vias, which are the tiny connectors that are found on the board.
If you're handy enough to remove your key fob and aren't afraid of a little mess, we can de-solder the buttons and put new ones in their place. It's also worth checking the battery terminal connections. If they're loose, the buttons may not function or get stuck in their down position. Soldering the terminals and buttons to their proper positions is usually enough to restore a non-working fob to a working condition.
Non-Remote transponder chips
The non-remote chips sealed in a sealed case are more durable than remote fobs. However, please click the next web page are susceptible to cracking if a hole is drilled in them, or if a car door handle or lawnmowers is pushed over them. Most of the time, non-remote transponder chips fail, and this could be attributed to an exploded fuse.
If you're handy enough to open up the sealed key fob and are willing to put up with the mess, you can take off the circuit board and check the fuse with an instrument to verify diode function. If you're unsure about doing this, go to your local hardware store or Oreilly's and they usually have a RFID frequency tester that can let you know whether the key fob is transmitting a signal.
Programming
Key fobs are not indestructible and are susceptible to being damaged by a lot of things. They can break their connection with the receiver in your vehicle due to shocks or low battery, which calls for reprogramming. A professional auto locksmith or a main dealer will be able to reprogram your key fob to get it working again. If resetting or repairing your keyfob does not work it is possible to replace it.