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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 by following some simple steps. First, ensure 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 isn't functioning. The most frequent causes of key problems with your car key lock repair near me remote are battery or circuitry issues.

Battery

It is not unusual for the battery inside the key fob for cars to degrade. It is simple to replace a battery. However, it is important that you use the correct kind. You can check your owner's guide or contact the manufacturer to determine the right type. It is recommended to examine the battery compartment carefully because dead batteries can leak caustic chemicals that can harm the remote. If replacing the batteries doesn't solve the issue it could be that there are other issues that require professional attention. For example, if buttons seem to be stuck or broken it could be necessary to take the remote apart and rebuild its components. You can also try reprogramming your vehicle to recognize the new key fob.

Buttons

mobile key repair fobs can become filthy and worn out due to frequent use. This is not atypical however, it can cause buttons to stop functioning or require a hard press for them to work. This can be frustrating particularly when you're away from home and need to switch on your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a bit of time and a few materials you have in the house.

First, check that the batteries are correctly inserted and that the indentation at the back of the button has been filled. Then, carefully remove the remote and inspect the circuit board. Look for signs of corrosion or other indications that buttons are worn out or damaged, such as missing the conductive paint. Then, using a Q-tip that has been dipped in rubbing alcohol, gently clean any membrane contacts that have worn 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, make sure to inspect the battery connector terminals for any loose solder connections. If this is the case, connecting them back can restore functionality to the button. You can use the same procedure to restore functionality to any other loose connection within the fob.

If any of the rubber buttons at the front of the keyfob isn't working or need to be press very hard, the graphite disks at the back of the button may have worn out and require replacement. You can do this by rubbing a pen across 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 hard press, then it may be that the circuit board itself has become damaged. This can be fixed by a quick clean and refitting, but it's best to have an extra fob on hand in the event that this method does not work for you.

Circuitry

Whether or not the keys fob buttons are functioning the circuit board that is inside your remote might be dirty. This problem can be resolved through a thorough examination. The most frequent causes of dirty circuit boards is water and broken cases. 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, which are known as via's.

If you're handy enough to open up your key fob and don't mind a little mess, we can take off the buttons and put new ones in their place. Also, you should check the connections between the battery terminals. If they're loose, the buttons might not function properly or become stuck in their down position. Soldering the terminals and buttons back into place is typically all it takes to restore a non-working key fob to functioning condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are much more durable than remote fobs they are contained in, but they can be damaged by a hole that is drilled into them or run over by a lawnmower or car door handle. The failure of the fuse is usually to blame for non-remote chips failures.

If you are not comfortable opening the key fob, remove the circuitboard and use a multimeter to check that the diode is functioning properly. If you're unsure about doing this, head to your local hardware store or Oreilly's, and they usually have an RF frequency tester that will determine whether the key fob sending signals.

Programming

Key fobs aren't impervious to destruction and are susceptible to damage through a variety of causes. They can lose their pairing to the receiver in your Car Remote Key Fob Repair due to shock or a low battery, which requires the reprogramming. A professional auto key fob repair locksmith or a dealer in the main can reprogram the key fob and get it back functioning again. If resetting or repairing your keyfob does not work it is possible to replace it.