How to Fix a Key Fob That isn't Working

If your key fob doesn't work There are a few simple steps that can fix it. First, make sure that it's not your backup remote.

If the backup can lock and unlock your car door, then there's a likely issue with the primary remote. https://articlescad.com/are-you-responsible-for-the-remote-key-repair-budget-12-best-ways-to-spend-your-money-485298.html of key malfunctions for car remotes are circuitry or battery issues.

Battery

The battery in the key fob could wear out over time. It is easy to replace a battery. However it is crucial that you choose the right type. You can consult the owner's manual or contact the manufacturer to inquire about the right type. It's also a good idea to examine the battery compartment thoroughly, as dead batteries sometimes leak caustic chemicals that can harm the remote. If replacing the batteries doesn't solve the issue it could be because there are other issues that require attention from a professional. For instance, if the buttons seem to be stuck or broken it could be necessary to disassemble the remote and rework its parts. You can also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs may become dirty and worn-out from frequent use. This is not atypical however, it can cause buttons to stop functioning or require a long press to function. This can be very frustrating, especially when you are away from your home and you need to start your car. Even malfunctioning or worn-out buttons can be fixed with a bit of time and materials 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 the remote and inspect the circuit board. Check for evidence of rust, or other indications that the buttons have been worn or damaged. For instance the paint that conducts electricity could be missing. Use a Q-tip dipped in rubbing alcohol, gently clean any membrane contacts that have worn or where conductive paint is missing. Don't rub too hard, as this could erode the conductive paint and prevent the button from firing when it is pressed.

Check the battery connector terminals carefully for any loose solder connections. Soldering them back to their original position will restore the button's functionality if this is the situation. You can use the same process 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 stop working or require a very hard press to work it is likely that the graphite disks at the back of the button are deteriorating and require replacement. It is usually done by rubbing a pen over the disks. This will bring the button back to life.

If all of this doesn't help, or if the button still doesn't respond to a firm press It could be the case that the circuit board has gone bad. 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 does not work for you.

Circuitry

The circuit board in your remote control may be dirty regardless of whether the buttons on the key fob are working or not. This problem can be resolved through a thorough examination. The most common causes of dirty circuit boards are water and broken cases. A damaged case can allow water and other debris to enter the circuit board, which can cause it to short out. Water can also eat away at pins and small connectors on the board called via's.

If you're able to remove your key fob and aren't afraid of some mess, we can remove the solder from the buttons and then solder new ones in their place. It's also worth checking the battery terminal connections. If they're loose, the buttons may not function properly or become stuck in their down position. Soldering the terminals and button's back into place is typically all that's required to return 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 have them but they can still be broken by a hole being made in them or pushed over by a lawnmowers blade or car door handle. The majority of non-remote transponder chip failures can be blamed on blowing fuses.

If you're not comfortable opening the key fob, you can remove the circuitboard and use a multimeter to check that the diode is operating correctly. If you're not comfortable doing this, visit your local hardware store or Oreilly's and they'll usually have an RFID frequency tester that can tell you whether the key fob sending signals.

Programming

Key fobs take a lot of abuse and aren't indestructible. They may lose their connection to the receiver in your car due to shock or low battery, which requires the reprogramming. A professional auto locksmith, or main dealer can reprogram the keyfob and get it up and running again. In the rarer case that resetting or repairing your key fob isn't working it may be time to replace it all over again.