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How to Fix a Key Fob That isn't Working

If your key fob isn't working, a few easy steps can fix it. First, make sure that it's not the backup remote.

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

Battery

It is not unusual for the battery inside a car Mobile Key Fob Repair fob to get worn out. It is simple to replace the battery. However, it is important that you use the correct kind. You can check your owner's manual or call the manufacturer to find out the right type. It is also essential to check the battery compartment as dead batteries can leak caustic chemicals that can harm the remote. If replacing the batteries doesn't solve the problem, it may be that there are other issues that require attention by a professional. For instance, if the buttons appear stuck or damaged, it may be necessary to take the remote apart and rework its components. You could also try reprogramming your car key fob repair service to recognize the new key fob.

Buttons

From repeated use, key fobs can get dirty and worn. This is not atypical, Motor but it can cause buttons to cease functioning or require a hard press for them to function. This can be extremely frustrating particularly if you're out of town and need to start your car. Fortunately, even worn out or broken buttons can usually be fixed with a little time and a few materials you have in the house.

First, check that the batteries are correctly placed and that the indentation on the back of the button has been filled. Open the remote carefully and look over the circuit board. Examine for indications of rust or other indications that the buttons are damaged or worn out. For instance there could be conductive paint missing. Then, using a Q-tip that has been dipped in alcohol, gently clean any membrane contacts that have become worn or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint and stop the button from firing when pressed.

Check the battery connector terminals for loose solder connections. Soldering them back in place will restore the button's functionality If this is the case. The same process can be used to restore functionality to any other loose connections inside the fob.

In the end, if any of the rubber buttons on the front of the key fob aren't functioning or require a difficult press to function, it is likely that the graphite disks at the back of the button are wearing out and require replacement. This is usually done by rubbing a pencil across the disks, which should bring the button back to its original state.

If none of these solutions work or you cannot get the button to respond when pressed hard, it could be that the circuitry has failed. 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

Whether or not the keys fob buttons are functioning the circuit board in the remote could be dirty. This problem can be resolved by a thorough inspection. The most common causes of dirty circuit boards are water and broken key repair cases. A damaged case allows water and other debris to enter and short circuit the electronic components. Water can also get through pins and mobile Key fob repair vias, which are small connectors on the board.

If you're handy enough to open your key fob and don't mind a little mess, we can remove the solder from the buttons and then solder new ones in their place. It's also worth looking at the battery terminal connections. If they are loose, the buttons could not work or even become stuck in their down position. Soldering the terminals and buttons to their proper positions is usually enough to restore a non-working fob to a working condition.

Non-Remote transponder chips

The sealed non-remote chips are more durable than their remote fobs, but they are susceptible to breaking in the event of a hole being drilled into them or in the event that a door key repair near me handle of a car key fob repair service or lawnmower runs over them. Failures of the fuse are typically 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 properly. If you don't feel comfortable with this, visit your local Oreilly or hardware store and use their RF frequency tester. This will inform you whether the key fob sends signals.

Programming

Key fobs endure many abuses and aren't completely indestructible. They may lose their connection with the receiver in your vehicle due to shocks or a low battery, which calls for changing the program. A professional auto locksmith or main dealer can reprogram your key fob and get it functioning again. If resetting or replacing your keyfob does not work it may be necessary to replace it.