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How to Fix a Key Fob That isn't Working

If your key fob doesn't work and you're not sure why, you can fix it by following just a few steps. First, ensure that it's not the backup remote.

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

Battery

The battery in a key fob can be worn out over time. It is fairly easy to replace the battery, however it is crucial to make sure that you use the right type; you can look in your owner's manual or contact the dealer of the manufacturer to find out the kind of battery you require. It's recommended to inspect the battery compartment with care, as dead batteries sometimes leak caustic chemicals that can harm the remote. If changing the batteries does not solve the issue it could be that there are other issues that require attention from a professional. If the buttons are damaged or stuck for instance it could be necessary to disassemble the remote and rework each component. You could also try reprogramming your vehicle to recognize the new key fob.

Buttons

From repeated use, key fobs could get dirty and worn. It is not common for buttons to stop working, or to require a long push to make them work. This can be very frustrating especially if you're out of town and need to start your car. Fortunately, even worn-out or malfunctioning buttons can often be fixed with a little time and a few materials you have in the home.

First, make sure that the batteries have been correctly installed and that the indentation on the back of the button has been filled. Then, carefully open up the remote and examine the circuit board. Examine for indications of rust or other signs the buttons have been damaged or worn out. For example, conductive paint may be missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contacts that have become damaged or have conductive paint missing. Don't rub too hard in order to damage the conductive paint and prevent the button from firing when you press it.

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

If any of the rubber buttons at the front of the keyfob are not working or need where to repair car key and repair key remote - please click the next post, be pressing very hard the graphite disks on the back of the button may have worn out and will require replacement. You can usually do this by rubbing a pen over the disks. This should bring the button to life.

If all of this doesn't help or if the button still does not respond to a hard press, then it may be that the circuit board has gone bad. It is possible to fix this issue by cleaning and re-soldering the fob, but you should have another spare in case it does not work.

Circuitry

Whether or not the key fob buttons function the circuit board in your remote may be dirty. This issue can be fixed through a thorough examination. The most frequent causes of dirty circuit boards are water and broken car key repair cases. A damaged case allows water and other debris to get in and short out the electronic components. Water can also get through pins and vias, which are small connectors found on the board.

If you're handy enough to open your key fob and aren't afraid of making a mess, we can remove the solder from the buttons and put new ones in their place. It's also worth checking the connections between the battery terminals. If they are loose, the buttons could not function or get stuck in their down position. Soldering the terminals back to their original positions is often enough to return a malfunctioning fob to working.

Non-remote control car key repairs Transponder Chips

The non-remote chips sealed in a sealed case are more durable than remote fobs. However, they can be cracked in the event of a hole being drilled in them or in the event that a door handle of a car or lawnmowers plows over them. Failures of the fuse are typically to blame for non-remote chips failures.

If you are not comfortable opening the key fob, you can remove the circuitboard and utilize a multimeter to check that the diode is working correctly. If you're not comfortable with this, visit your local Oreilly or hardware store and use their RF frequency tester. This will tell you whether the key fob sends an RF signal.

Programming

Key fobs are not indestructible and are susceptible to damage by a variety of factors. They can lose their pairing with the receiver inside your vehicle due to shocks or low battery, which calls for changing the program. A professional auto locksmith or a main dealer can reprogram your key fob and get it working again. If resetting or fixing your key fob fails it may be necessary to replace it.