How to Fix a Key Fob That isn't Working

If your key fob does not work and you're not sure why, you can fix it with some simple steps. The first step is to make sure that it's not your backup remote.

If the backup remote is able to lock and unlock your car keys repair doors, it is most likely an issue with the main remote. The most frequent causes of car remote key failure are issues with the circuitry or battery.

Battery

The battery inside the key fob may wear out over time. It is easy to replace a battery. However, it is important that you use the correct kind. You can refer to your owner's guide or contact the manufacturer to determine the right type. It is recommended to inspect the battery compartment thoroughly because dead batteries can leak caustic chemicals that can harm the remote. If changing the battery doesn't solve the issue, there may be other issues requiring professional attention. For instance, if buttons appear stuck or damaged It may be necessary to take the remote apart and rework its parts. You could also try reprogramming the vehicle to recognize the new remote.

Buttons

Key fobs may become dirty and worn out from repeated use. It is not common for buttons to cease functioning, or require a hefty push to make them work. This can be very frustrating especially if you're away from home and need to start your car. Fortunately, even worn out or damaged buttons can be fixed with a bit of time and some of the materials you have in the 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. Examine for signs of rust or other indications that the buttons have been damaged or worn out. For instance, conductive paint may be missing. Use a Q-tip dipped in alcohol to gently clean any membrane contacts that are damaged or have conductive paint missing. Avoid rubbing too hard as this can erode the conductive painting and prevent the button from firing when it is it is pressed.

Also, carefully check the battery connector's terminals to ensure an unattached solder connection. If this is the case, soldering them back in place can bring back function to the button. You can use the same procedure to restore functionality to any other loose connection inside the fob.

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

If none of these solutions work or you not be able to get the button respond when you press it hard, it is possible that the circuitry is failing. It is possible to fix this issue by cleaning and re-soldering your fob however, you should have an extra in case it doesn't work.

Circuitry

Whether or not the key fob buttons function, the circuit board inside your remote may be dirty. A thorough inspection is usually enough to fix this problem. Broken cases and water are the most frequent causes of dirty boards. A damaged case can allow water and other debris to get in and short circuit the electronic components. Water can also damage pins and vias, which are small connectors on the board.

If you're able to open your key fob and don't mind making an mess, you can remove the buttons from their sockets and then solder new ones. It's also worth examining the battery terminal connections. They can become extremely filthy and if they're not tight enough, the buttons may not work or even stick in their down position. Soldering the terminals and button's back in place is usually all it takes to restore the mobile key fob repair fob that is not working to working order.

Non-Remote Transponder Chips

Sealed non-remote key fob repairs transponder chips are much more durable than remote fobs that contain them however they are still susceptible to being cracked by a hole that is drilled into them or over by a lawnmowers or door handle for a car. Most of the time non-remote transponder chip malfunctions could be attributed to an exploded fuse.

If you're able to open a sealed non-remote key fob and are able to bear the mess, you can take off the circuit board and examine the fuse with a multimeter to ensure that it is functioning as intended. function. If you're not confident doing this, visit your local hardware store or Oreilly's, and they will usually have an radio frequency tester that can determine whether the key fob is sending a signal.

Programming

Key fobs aren't impervious to destruction and are susceptible to being damaged through a variety of causes. They may lose their connection with the receiver in your vehicle because of shocks or a low-battery, which requires reprogramming. A professional auto locksmith or a main dealer can reprogram your key fob to get it working again. If resetting or repairing your key fob fails it is possible to replace it.