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How to Fix a Key Fob That isn't Working

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

If your backup remote is unable to unlock and lock the doors of your vehicle, it is likely that the main Remote key Repair isn't working. The majority of car remote key malfunctions are caused by circuitry or battery issues.

Battery

The battery in the key fob may get worn out over the course of time. It is relatively easy to replace a battery, although it is important to ensure that you choose the correct type and you can consult your owner's manual or contact the dealer of the manufacturer to determine the type of battery you require. It's also a good idea to inspect the battery compartment thoroughly, as dead batteries sometimes release caustic chemicals that could damage the remote. If replacing the batteries doesn't solve the problem it could be because there are other issues that require professional attention. For example, if buttons seem stuck or damaged it could be necessary to disassemble the remote and rework its parts. You can also try reprogramming your car to recognize the new key fob.

Buttons

Key fobs may become dirty and worn out from repeated use. This is not unusual however, it can cause buttons to stop working or require a very difficult press to get them to work. This can be extremely frustrating, especially if you are out of town and need to start your vehicle. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and a few items you might already have in the house.

First, check that the batteries are properly charged and that the indentation on the back of the button is filled. Then, open the remote with care and examine the circuit board. Check for signs of corrosion or other signs that buttons are worn out or damaged, such as missing conductive paint. Utilizing a Q-tip dipped in alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Avoid rubbing too hard, as this can erode the conductive painting and prevent the button from firing when pressed.

Check the battery connector terminals for loose solder connections. Soldering them back into place will allow the button to function again If this is the case. You can follow the same process to restore functionality to any other loose connection inside the fob.

In the end, if any of the rubber buttons on the front of the key fob have stopped working or require a long press to function, it is likely that the graphite disks at the back of the button are wearing out and require replacement. It is usually done 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 It could be that the circuit board has become damaged. It is possible to fix this by cleaning and re-soldering your fob, but you should have an extra in case it doesn't work.

Circuitry

The circuit board of your remote control could be dirty, regardless of whether the buttons on the key fob function or not. The issue can be solved by a thorough inspection. Water and broken cases are the most frequent causes of dirty boards. A broken case allows water and other debris to enter and short out the electronic components. Water can also destroy pins and connectors on the board, which are known as via's.

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

Non-Remote transponder chips

Sealed non-remote transponder chip are more durable than remote fobs that contain them however they are still susceptible to being damaged by a hole that is drilled into them or run over by a lawnmowers blade or door handle for a car key fob repair service. Most of the time non-remote transponder chip failures could be attributed to an exploded fuse.

If you are not comfortable opening the key fob, remove the circuitboard and use a multimeter to determine if the diode is operating correctly. If you're unsure about doing this, head to your local hardware store or Oreilly's and they will usually have an RF frequency tester that will let you know whether the key repair shops near me fob is sending a signal.

Programming

Key fobs endure lots of abuse and aren't indestructible. They may lose their connection to the receiver in your car key immobiliser repair due to shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or a main dealer can reprogram your key fob and get it working again. If, in the unlikely event that resetting and repairing your key fob fails, it could be time to replace it entirely.