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How to Fix a Key Fob That isn't Working

If your key fob doesn't work, a few easy steps can fix it. First, check to make sure it's not your backup remote.

If your backup remote can lock and unlock the doors of your car keys repairs near me, then it is likely that the primary remote is not working. The most common causes for mobile car key repair near me remote key failure are issues with the circuitry or battery.

Battery

The battery inside a mobile key repair near me fob can get worn out over the course of time. It is relatively easy to replace batteries, but it is essential to ensure you use the right type that you can refer to your owner's manual or contact the manufacturer's dealer to determine the type of battery you require. It is also crucial to check the battery compartment, as batteries that are not working properly can release toxic chemicals that could damage the remote. If changing the batteries doesn't solve the issue it could be because there are other issues that require attention by a professional. If buttons are stuck or broken, for example it could be necessary to remove the remote and rebuild each component. You can also try reprogramming the vehicle to recognize the new remote.

Buttons

Key fobs can become dirty and worn-out from frequent use. It is not uncommon for buttons to cease functioning, or require a long push to make them work. This can be very frustrating particularly when you're away from home and you need to turn on your car. Fortunately, even worn-out or damaged buttons can be fixed with a little time and some of the materials you may already have around the home.

First, check that the batteries are correctly inserted and that the indentation on the back of the button has been filled. Take the remote apart and look over the circuit board. Check for signs of rust or other signs the buttons have been worn or damaged. For instance there could be conductive paint missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has become worn out or has conductive paint missing. Avoid rubbing too hard, since this could cause damage to the conductive painting and prevent the button from firing when it is it is pressed.

Check the battery connector terminals for loose solder connections. If this is the case, connecting them back can restore functionality to the button. The same procedure can be used to restore functionality to any other loose connections inside the fob.

If any of the rubber buttons located at the front of the keyfob isn't working or need to be pressed very hard the graphite disks at the back of the button could have worn out and need to replaced. You can do this by rubbing a pencil over the disks. This should bring the button to life.

If none of these solutions work, or if you still not be able to get the button respond when you press it hard, it could be that the circuitry is failing. It is possible to fix this issue by cleaning and re-soldering the fob but you should also have a spare in case it does not work.

Circuitry

Whether or not the key fob buttons function, the circuit board inside the remote could be dirty. The issue can be solved by a thorough inspection. Water and broken cases are the most common causes of dirty boards. A broken key repair near me case can let water and other debris to enter the circuit board, causing it to short out. Water can also eat through pins and vias, which are tiny connectors that are found on the board.

If you're able to open your key fob, and aren't afraid of making some mess, we can remove the buttons from their sockets and solder in new ones. It's also worth examining the battery terminal connections. They can become very dirty and if they're loose the buttons may not work or even stay in their down position. Soldering the terminals back into place is usually enough to return a malfunctioning fob back to working.

Non-Remote transponder chips

Sealed non-remote transponder chip are more durable than remote fobs that contain them but they can be damaged by a hole that is 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're not confident opening the key fob, you can take the circuit board off and use a multimeter to check that the diode is working correctly. If you're not comfortable with this, go to your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob transmits an RF signal.

Programming

Key fobs are not indestructible and are susceptible to being damaged through a variety of causes. They can lose their pairing with the receiver inside your vehicle due to shocks or a low battery, requiring reprogramming. A professional auto locksmith or dealer can reprogram your key fob to get it back up and running. If resetting or repairing the keyfob is not working it is possible to replace it.