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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 your backup remote.

If your backup remote cannot lock and unlock the doors of your vehicle, it is most likely that the primary remote isn't functioning. Most problems with car remote keys are caused by circuitry or battery issues.

Battery

The battery inside a key fob can get worn out over the course of time. It is simple to replace the battery. However it is crucial that you choose the right kind. You can consult your owner's manual or call the manufacturer to determine the right kind. It is also important to examine the battery compartment as dead batteries can leak caustic chemicals which can damage the remote key repair. If changing the batteries does not solve the problem it could be because there are other issues that require professional attention. For instance, if buttons seem stuck or damaged it could be necessary to take the remote apart and rework its parts. You can also try reprogramming your vehicle to recognize the new key repair shop near me fob.

Buttons

From frequent use, key fobs could get dirty and worn. This is not unusual, but it can cause buttons to stop working or require a very long press to function. This can be very frustrating especially when you're away from home and need to start your car. Fortunately, even worn-out or damaged buttons can be fixed with a little time and a few materials you have in the house.

First, verify that the batteries are correctly inserted and that the indentation at the back of the button has been filled. Then, carefully open the remote and inspect the circuit board. Check for signs of corrosion or other signs that the buttons are worn or damaged, like missing paint that is conductive. Use a Q-tip, dipped in rubbing alcohol to gently clean any membrane contact that is damaged or where conductive paint is missing. Be careful not to rub too hard, since this could cause damage to the conductive paint and block the button from firing when pressed.

Also, carefully check the battery connector's terminals to ensure any loose solder connections. Soldering them back to their original position can restore the button's functionality if this is the situation. The same method can be used to restore function to any other loose connections within the fob.

Finally, if any of the rubber buttons on the front of the key fob stop working or require a difficult press to function it is likely that the graphite disks at the back of the button are wearing down and need to be replaced. You can do this by rubbing a pen over the disks. This should bring the button back to life.

If none of this is helpful or if the button still doesn't respond to a firm press, then it may be because the circuit board itself has become damaged. It is possible to fix this issue by cleaning and re-soldering the button but you should also have a spare in case it does not work.

Circuitry

The circuit board of your remote control may be dirty, regardless of whether the buttons on the key fob work or not. A thorough inspection is often enough to resolve this problem. Water and broken cases are the most common causes of boards that are dirty. A damaged case can allow water and other debris to pass through and short circuit the electronic components. Water can also eat away at pins and small connectors on the board called via's.

If you are handy enough to open your key fob, and don't mind making some mess, we can take the buttons out of their sockets and then solder new ones. Also, you should check the connections between battery terminals. They can become very filthy and if they're not tight enough, the buttons may not work or even stay in their down position. Soldering the terminals back to their proper positions is usually enough to return a malfunctioning fob to working.

Non-Remote transponder chips

The non-remote chips that are sealed are more durable than their remote fobs, but they are susceptible to cracking when a hole is made in them, or if a car door handle or lawnmowers plows over them. The failure of the fuse is usually the cause of non-remote chip failures.

If you're able to remove a sealed non-remote key fob and are willing to put up with the mess, you can remove the circuit board and check the fuse with a multimeter for proper diode function. If you're not sure with this, you can go to your local Oreilly or hardware store and utilize their RF frequency tester. This will tell you whether the key fob is sending an RF signal.

Programming

Key fobs are not indestructible and are susceptible to damage through a variety of causes. They may lose their connection with the receiver inside your vehicle because of shocks or a low-battery, which requires reprogramming. A professional auto locksmith or main dealer can reprogram your key fob to get it functioning again. In the event that resetting and repairing your key fob isn't working, it could be time to replace it completely.