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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 be taken to fix it. First, make sure that it's not your backup remote.

If your backup remote is unable to lock and unlock the doors of your vehicle, it is likely that the main remote is not working. The most common causes of car remote key failure are battery or circuitry issues.

Battery

It is not unusual for the battery inside a key fob for cars to wear out. It is easy to replace the battery. However it is essential that you choose the right type. You can check your owner's guide or contact the manufacturer to determine the right kind. It is also essential to inspect the battery compartment, since batteries that are not working properly can release toxic chemicals that could damage the remote. If changing the battery doesn't fix the problem there could be other issues that require attention from a professional. For example, if buttons appear stuck or broken It may be necessary to take the remote apart and Repair Key rebuild its components. You can also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs can get filthy and worn out due to repeated use. It is not uncommon for buttons to cease functioning, or require a hard press to get them working. This can be frustrating especially when you're away from home and have to switch on your car. Fortunately, even worn-out or malfunctioning buttons can often be fixed with just a bit of time and some of the materials you may already have around the home.

First, check that the batteries have been correctly placed and that the indentation at the back of the button has been filled. Open the remote key repair carefully and examine the circuit board. Check 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 have become damaged or where conductive paint is missing. Be careful not to rub too hard, as this can erode the conductive painting and prevent the button from firing when it is pressed.

Also, carefully check the battery connector terminals for any loose solder connections. Soldering them back to their original position will allow the button to function again If this is the case. The same method can be used to restore functionality to any other loose connections in the fob.

If any of the rubber buttons at the front of the keyfob isn't working or require being pressed extremely hard, the graphite disks at the back of the button may have worn out and require replacement. This can usually be done by rubbing a pencil over the disks. This should bring the button back to life.

If all of this doesn't help or if the button does not respond to a firm press, then it may be because the circuit board itself has become damaged. This can be fixed with a quick clean and re-soldering, but it is recommended to have an additional fob on hand in the event that this method does not 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. A thorough examination will usually resolve this problem. The most frequent causes of dirty circuit boards is water and damaged cases. A broken case can let water and other debris to enter the circuit board, causing it to short out. Water can also get through pins and vias, which are small connectors that are found on the board.

If you're able to open up your key fob and don't mind making a mess, we can de-solder the buttons and solder new ones in their place. It's also worth examining the battery terminal connections. They can become extremely dirty and if they're loose, the buttons may not work or even stick in their down position. Soldering terminals and buttons back to their proper positions is usually enough to bring a non-working fob to working.

Non-Remote transponder chips

Sealed non-remote transponder chips are much more durable than the remote fobs they are contained in, however they are still susceptible to being broken by a hole being that is drilled into them or over by a lawnmower or car door remote Key Repair handle. Fuse failures are usually to blame for non-remote chip failures.

If you are not comfortable opening the key fob, take the circuit board off and use a multimeter to verify that the diode is operating properly. If you're not sure with this, visit your local Oreilly or hardware store and use their RF frequency tester. This will let you know whether the key fob sends a signal.

Programming

Key fobs endure lots of abuse and aren't indestructible. They can lose their pairing with the receiver inside your vehicle because of shocks or a low battery, which calls for reprogramming. A professional auto locksmith or a dealer in the main can reprogram your keyfob and get it functioning again. If resetting or replacing your keyfob does not work it is possible to replace it.