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How to Fix a Key Fob That isn't Working

If your key fob does not work, you can fix it with some simple steps. First, make sure that it's not the backup remote.

If your backup remote can unlock and lock the doors of your vehicle, 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

The battery inside the key fob may wear out over time. It is simple to replace the battery. However it is crucial that you choose the right kind. You can consult the owner's manual or contact the manufacturer to find out the correct type. It's also a good idea to examine the battery compartment thoroughly because dead batteries can leak harmful chemicals that can cause damage to the remote. If changing the battery doesn't solve the issue there may be additional issues that require attention from a professional. For instance, if buttons appear stuck or broken, it may be necessary to take the remote apart and rework its components. It is also possible to reprogramme the vehicle to recognize the new remote.

Buttons

Through repeated use, key fobs could get dirty and worn. It is not unusual for buttons to stop working, or to require a hard push to make them work. This can be extremely frustrating particularly if you're away from home and need to start your vehicle. Even worn-out or malfunctioning buttons are often fixable with a little time and tools you already have at home.

First, ensure that the batteries are properly charged and that the indentation on the back of the button is filled. Then, carefully open the remote and look at the circuit board. Look for indications of rust or other signs the buttons have been damaged or worn. For instance the paint that conducts electricity could be missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contacts that have become damaged or have conductive paint missing. Be careful not to rub too hard, as this can erode the conductive paint and block the button from firing when pressed.

Also, carefully check the battery connector terminals for an unattached solder connection. If this is the case, simply connecting them back can restore function to the button. You can apply the same method to restore functionality to any other loose connection in the fob.

If, for instance, any of the buttons made of rubber that are on the front of the key fob stop working or require a hard press to work it is likely the graphite disks that are on the back of the button are deteriorating and need to be replaced. This is usually done by rubbing a pencil across the disks. This should 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 pressed hard, it is possible that the circuitry is failing. It is possible to fix this by cleaning and re-soldering the fob, but you should have an extra in case it does not work.

Circuitry

If the key fob buttons function, mobile car key Repair the circuit board inside the remote could be dirty. A very thorough inspection is usually enough to fix this problem. Water and broken cases are the most frequent causes of dirty boards. A broken case allows water and other debris to get in and short circuit the electronic components. Water can also damage pins and connectors that are small on the board called via's.

If you're able to remove your key fob key repair and don't mind some mess, we can de-solder the buttons and put new ones in their place. It's also worth checking the battery terminal connections. If they are loose, the buttons might not work or even become stuck in their down position. Soldering the terminals and buttons back in their place is generally all that's required to return the key fob that is not working to functioning condition.

Non-Remote transponder chips

Sealed non-remote transponder chip are more durable than the remote fobs they are contained in, but they can still be damaged by a hole that is drilled into them or run over by a lawnmowers blade or mobile car key repair (sneak a peek here) door handle. The majority of non-remote transponder chip failures can be blamed on blowing fuses.

If you're handy enough to remove a key fob that is sealed and can tolerate the mess, you can take off the circuit board and examine the fuse using a multimeter to ensure that it is functioning as intended. function. If you're not sure with this, go to your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob sends signals.

Programming

Key fobs are subject to many abuses and aren't completely indestructible. They can lose their pairing with the receiver in your vehicle due to shocks or a low battery, which calls for the reprogramming. A professional auto locksmith or dealer can reprogram your key fob to get it back up and running. In the rarer case that resetting and repairing your key fob fails, it could be time to replace it entirely.