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How to Fix a Key Fob That isn't Working

If your key fob won't work then you can fix it with some simple steps. The first step is to be sure that it's not your backup remote.

If your backup remote is unable to unlock and lock the doors of your car, then it is most likely that the primary remote car key repair is not working. Most car remote key failures are caused by circuitry or battery problems.

Battery

It is not unusual to find a battery on the car key fob to degrade. It is simple to replace batteries. However it is crucial that you choose the right kind. You can consult your owner's guide or contact the manufacturer to inquire about the right type. It is also important to check 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 could be other issues that require attention from a professional. For instance, if the buttons appear stuck or broken It may be necessary to disassemble the remote and rebuild its components. You could also try reprogramming the vehicle to recognize the new remote.

Buttons

Key fobs can get dirty and worn out from frequent use. It is not unusual for buttons to cease functioning, or require a long press to make them work. This can be a hassle, especially when you are away from home and you need to start your car. Fortunately, even worn out or damaged buttons can be fixed with just a bit of time and some of the materials you might already have in the home.

First, ensure that the batteries are up correctly and that the indentation on the back of the button is filled. Then, carefully open up the remote and inspect the circuit board. Check for indications of rust or other signs the buttons have been damaged or worn. For instance the paint that conducts electricity could be missing. Then, using the Q-tip, dipped in alcohol to gently clean any membrane contacts that are worn or have conductive paint missing. Be careful not to rub too hard, because this could damage the conductive paint and stop the button from firing when it is it is pressed.

Check the battery connector's terminals carefully for any loose solder connections. Soldering them back in place will restore the button's functionality if this is the case. You can apply the same method to restore functionality to any other loose connection within the fob.

In the end, if any of the buttons made of rubber that are on the front of the key fob have stopped working or require a long press to function, it is likely that the graphite disks on the back of the button are deteriorating and require replacement. It is usually done by rubbing a pencil over the disks. This will bring the button back to life.

If none of these solutions work, or if you still are unable to get the button to 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 the button however, you should have an extra in case it does not work.

Circuitry

Whether or not the key fob buttons function, the circuit board inside the remote key repair could be dirty. A thorough inspection will usually resolve this problem. Broken and damaged cases are the most common causes of dirty boards. A damaged case can allow water and other debris to pass through and short circuit the electronics. Water can also eat through pins and vias, remote Key Repair which are tiny connectors that are found on the board.

If you're able to open up your key fob and aren't afraid of making a mess, we can remove the solder from the buttons and then solder new ones in their place. Also, it's worth checking the connections between battery terminals. If they're loose, Remote Key repair the buttons could not function or get stuck in their down position. Soldering terminals and buttons back into place is usually enough to restore a non-working fob back to working.

Non-Remote Transponder Chips

The non-remote chips sealed in a sealed case are more durable than remote fobs, but they are susceptible to cracking when a hole is made in them or if a car door handle or lawnmowers is pushed over them. The failure of the fuse is usually to blame for non-remote chip failures.

If you're not comfortable opening the key fob, you may remove the circuitboard and utilize a multimeter to verify that the diode is functioning properly. If you're unsure about doing this, go to your local hardware store or the Oreilly's and they usually have a radio frequency tester that can tell you if the key fob is transmitting a signal.

Programming

Key fobs aren't impervious to destruction and are susceptible to damage through a variety of causes. They may lose their connection to the car's receiver due to shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or main dealer will be able to reprogram your key fob and get it functioning again. In the event that resetting and repairing your key fob doesn't work it may be time to replace it completely.