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How to Fix a Key Fob That isn't Working

If your key fob doesn't work, a few easy steps can fix it. First, ensure that it's not the backup remote.

If the backup remote is able to lock and unlock your mobile car key repair near me door, it is most likely an issue with the primary remote. The most common causes for key malfunctions for repair car key remote remotes are issues with the circuitry or battery.

Battery

The battery inside the key fob could wear out over time. It is easy to replace a battery. However it is crucial that you choose the right kind. You can consult your owner's guide or contact the manufacturer to find out the right kind. It is also crucial to inspect the battery compartment as dead batteries can leak caustic chemicals that can harm the remote. If changing the battery doesn't fix the problem there could be other issues that require attention from a professional. If buttons are damaged or stuck, for example it could be necessary to take the remote apart and rework each component. You can also try reprogramming the vehicle to recognize the new key fob.

Buttons

From repeated use, key fobs could get dirty and worn. It is not uncommon for buttons to cease functioning, or require a hefty push to make them work. This can be very frustrating especially if you're out of town and need to start your mobile car key repair near me. Fortunately, even worn out or damaged buttons can be fixed with a little time and a few materials you have in the home.

First, verify that the batteries are properly inserted and that the indentation on the back of the button is filled. Open the remote carefully and examine the circuit board. Examine for signs of rust or other indications that the buttons are worn out or damaged, such as missing conductive paint. Then, using a Q-tip that has been dipped in alcohol to gently clean any membrane contacts that have worn or Where to repair car key remote conductive paint is missing. Avoid rubbing too hard because this could damage the conductive painting and prevent the button from firing when pressed.

Also, make sure to inspect the battery connector's terminals to ensure any loose solder connections. 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 within the fob.

If, for instance, any of the buttons made of rubber on the front of the key fob have stopped working or require a very long press to function it is likely that the graphite disks at the back of the button are wearing down and need to be replaced. It is usually done by rubbing a pen across 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 you press it hard, it is possible that the circuitry is failing. It is possible to fix this by a quick clean, and re-soldering, but it is ideal to have a spare fob on hand in the event that this method doesn't work for you.

Circuitry

The circuit board inside your remote control may be dirty regardless of whether the buttons on the key fob are working or not. This problem can be resolved by a thorough inspection. The most common causes for dirty circuit boards is water and broken cases. A damaged case allows water and other debris to enter and short out the electronic components. Water can also eat through pins and vias, which are the tiny connectors on the board.

If you're handy enough to open up your key fob, and you're not afraid of some mess, we can remove the solder from the buttons and put new ones in their place. Also, it's worth checking the connections between battery terminals. If they are loose, the buttons might not function properly or become stuck in their down position. Soldering the terminals, and putting the button back in their place is generally all that's needed to return a non-working key fob to functioning condition.

Non-Remote transponder chips

The non-remote chips sealed in a sealed case are more durable than their remote fobs. However, they can be cracked when a hole is made into them or if a car key immobiliser repair door handle or lawnmower runs over them. Fuse failures are usually to blame for non-remote chips failures.

If you're not comfortable opening the key fob, you may remove the circuitboard and use a multimeter to determine if the diode is operating correctly. If you're not comfortable with this, go to your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob is sending signals.

Programming

Key fobs take many abuses and aren't indestructible. They may lose their connection to the receiver in your car remote key repair because of shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or a dealer in the main can reprogram your key fob and get it back up and running again. If, in the unlikely event that resetting and fixing your key fob doesn't work, it could be time to replace it entirely.