How to Fix a Key Fob That isn't Working

If your key fob isn't functioning There are a few simple steps that can be taken to fix it. First, check to make sure it's not the backup remote.

If your backup remote cannot lock and unlock the doors of your car, then it is likely that the main remote is not working. Most car remote key failures result from battery or circuitry problems.

Battery

It is not uncommon for the battery inside a car key fob to get worn out. It is fairly easy to replace batteries, but it is important to make sure that you select the correct one; you can look in your owner's manual, or contact the manufacturer's dealer to find out the kind of battery you require. It's recommended to inspect the battery compartment thoroughly since dead batteries may release caustic chemicals that could cause damage to the remote. If replacing the battery does not solve the issue there may be additional issues that require professional attention. For instance, if buttons seem stuck or broken, it may be necessary to take the remote apart and rework its components. You could also try reprogramming the vehicle to recognize the new key fob.

Buttons

From repeated use, key fobs can wear out and become dirty. It is not uncommon to have buttons stop working, or to require a hefty push to make them work. This can be frustrating, especially when you are away from home and you need to turn on your car. Even worn-out or malfunctioning buttons are often fixable with a bit of time and tools 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. Take the remote apart and examine the circuit board. Check for signs of corrosion or other signs that the buttons are worn out or damaged, like missing the conductive paint. Then, using a Q-tip dipped in rubbing alcohol, gently clean any membrane contacts that have become worn or where conductive paint is missing. Do not rub too vigorously in order to damage the conductive paint and prevent the button from firing when pressed.

Check the battery connector's terminals for loose solder connections. Soldering them back into place can restore the button's functionality in the event that this is the case. The same method can be used to restore function to any loose connections within the fob.

If any of the rubber buttons on the front of the keyfob aren't functioning or require to be press extremely hard, the graphite disks at the back of the button may have worn out and require replacement. You can usually do this by rubbing a pen across the disks. This should bring the button to life.

If none of these solutions work or you not be able to get the button respond when pressed hard, it is possible that the circuitry has failed. This can sometimes be repaired by a quick clean, and replacing the solder, but it is ideal to have a spare fob in case this method doesn't work for you.

Circuitry

Whether or not the keys fob buttons are functioning the circuit board in your remote might be dirty. This problem can be resolved through a thorough examination. The most common causes of dirty circuit boards are water and broken key repair cases. A damaged case can allow water and other debris to pass through and short circuit the electronic components. Water can also damage pins and vias, which are tiny connectors on the board.

If you're skilled enough to open your key fob and you don't mind making a mess, we can remove the buttons from their sockets and then solder new ones. Also, you should check the connections between the battery terminals. They can become extremely dirty and if they're loose the buttons might not work or even stick in their down position. Soldering the terminals and buttons back in their place is generally all it takes to restore the mobile Key Repair fob that is not working to functioning condition.

Non-Remote Transponder Chips

The non-remote chips that are sealed are more durable than their remote fobs. However, they are susceptible to cracking if a hole is drilled into them or in the event that a door mobile Key Repair handle of a car or lawnmowers plows over them. Fuse failures are usually the cause of non-remote chip failures.

If you're able to open a key fob that is sealed and can tolerate the mess, you can easily remove the circuit board and examine the fuse with an instrument to verify diode function. If you're not comfortable with this, visit your local Oreilly or hardware store and test their RF frequency tester. This will let you know whether the key fob sends a signal.

Programming

Key fobs take a lot of abuse and aren't indestructible. They may lose their connection to the car's receiver due to shock or low battery, which requires them to be reprogrammed. A professional auto locksmith, or main dealer can reprogram your keyfob to get it functioning again. If resetting or repairing your key fob fails, you may need to replace it.