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How to Fix a Key Fob That isn't Working

If your key fob won't work and Keyless entry Repair you're not sure why, you can fix it by following a few simple steps. First, check to make sure it's not the backup remote.

If your backup remote cannot unlock and lock the doors of your car, then it is most likely that the primary remote is not working. The most common causes of key malfunctions for car remotes are battery or circuitry issues.

Battery

It is not uncommon for the battery inside the car key fob to get worn out. It is simple to replace the battery. However it is crucial that you choose the right kind. You can consult your owner's manual or call the manufacturer to inquire about the right type. It is also important to examine the battery compartment, as batteries that are not working properly can release caustic chemicals which can damage the remote. If replacing the battery does not solve the issue, there may be other issues that require professional attention. If buttons are damaged or stuck, for example it might be necessary to disassemble the remote and rework each component. It is also possible to reprogramme the vehicle to recognize the new remote.

Buttons

Key fobs may become dirty and worn-out from frequent use. It is not common to have buttons stop working, or to require a long press to make them work. This can be a huge hassle particularly if you're away from home and need to start 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 house.

First, verify that the batteries have been correctly placed 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 evidence of rust, or other indications that the buttons have been worn or damaged. For instance there could be conductive paint missing. Use a Q-tip dipped into alcohol to gently clean any membrane contact that is damaged or where conductive paint is missing. Do not rub too vigorously in order to damage the conductive paint, and block the button from firing when pressed.

Check the battery connector's terminals for loose solder connections. Soldering them back into place will allow the button to function again if this is the case. You can follow the same process to restore functionality to any other loose connection within the fob.

If any of the rubber buttons on the front of the keyfob are not working or need to be pressing extremely hard the graphite disks at the back of the button could have worn out and will require replacement. You can do this by rubbing a pencil over the disks. This should bring the button back to life.

If none of these solutions work, or if you still not be able to get the button respond when pressed hard, it could be that the circuitry has failed. This can sometimes be repaired by a quick clean and re-soldering, but it is recommended to have an additional fob key repair in case this method fails for you.

Circuitry

If the key fob buttons function the circuit board in your remote might be dirty. A thorough examination is often enough to resolve this problem. Broken cases and water are the most common causes of dirty boards. A broken car key repair case allows water and other debris to enter and short circuit the electronics. Water can also get through pins and vias, which are small connectors on the board.

If you're skilled enough to open your key fob, and don't mind making an mess, you can take the buttons out of their sockets and then solder new ones. Also, you should check the connections between the battery terminals. They can become extremely filthy and if they're not tight enough, the buttons might not work or even stay in their down position. Soldering the terminals back to their proper positions 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 still be broken by a hole being drilled into them or run over by a lawnmowers blade or Door Key Repair Near Me handle for a repair car keys. Most of the time, non-remote transponder chip malfunctions can be attributed to a blown fuse.

If you are not comfortable opening the key fob, you can take the circuit board off and use a multimeter to verify that the diode is working correctly. If you're unsure about doing this, visit your local hardware store or Oreilly's and they'll usually have a radio frequency tester that can tell you whether the key fob sending signals.

Programming

Key fobs aren't impervious to destruction and are susceptible to being damaged by a lot of things. They can break their connection with the receiver inside your vehicle because of shocks or a low-battery, which requires the reprogramming. A professional auto locksmith or dealer will be able to reprogram your key fob to get it working again. If resetting or repairing your key fob fails it may be necessary to replace it.