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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 a few simple steps. The first step is to be sure it's not the backup remote.

If the backup remote is able to lock and unlock your car doors then there's a likely issue with the main remote. The most common causes for car remote key lock repair near me failure are issues with the circuitry or battery.

Battery

The battery in the key fob may be worn out over time. It is fairly easy to replace batteries, but it is important to ensure you select the correct one and you can consult the owner's manual or talk to the dealer for the manufacturer to determine the type of battery you require. It's recommended to inspect the battery compartment carefully since dead batteries may leak caustic chemicals that can damage 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 rebuild its components. It is also possible to reprogramme the vehicle to recognize the new remote.

Buttons

From frequent use, key fobs could become worn and dirty. This is not uncommon, but it can cause buttons to stop functioning or require a long press to work. This can be very frustrating especially if you're away from home and need to start your vehicle. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and a few materials you may already have around the house.

First, verify that the batteries are properly installed and that the indentation at the back of the button has been filled. Then, carefully open the remote and look at the circuit board. Look for signs of corrosion or other indications that the buttons are worn out or damaged, like missing conductive paint. Use a Q-tip that has been dipped in rubbing alcohol to gently clean any membrane contact that has become damaged or has conductive paint missing. Don't rub too hard as this can damage the conductive paint and prevent the button from firing when you press it.

Examine the battery connector's terminals carefully for any loose solder connections. Soldering them back to their original position can restore the button's functionality if this is the case. The same process can be used to restore functionality to any other loose connections within the fob.

If, for instance, any of the rubber buttons on the front of the key fob aren't working or require a very long press to function it is likely that the graphite disks that are on the back of the button are wearing out and require replacement. This is usually done by rubbing a pencil on the disks, which will bring the button back to life.

If none of this is helpful or if the button still does not respond to a hard press It could be the case that the circuit board has become damaged. This can sometimes be repaired by a quick clean and replacing the solder, but it is recommended to have an additional 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 may be dirty. This problem can be resolved through a thorough examination. The most common causes for dirty circuit boards are water and broken car key repair near me cases. A broken case allows water and other debris to enter and short out the electronic components. Water can also destroy pins and small connectors on the board called via's.

If you're able to open your key fob, and you're not afraid of a little mess, we can de-solder the buttons and solder new ones in their place. Also, you should check the connections between the battery terminals. They can get very filthy and if they're not tight enough, the buttons might not function or may even remain in their down position. Soldering the terminals back to their original positions is often enough to restore a non-working fob to working.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are much more durable than remote fobs they are contained in, remote however they are still susceptible to being damaged by a hole that is drilled into them or run over by a lawnmower or door handle for a car. Most of the time non-remote transponder chip malfunctions can be blamed on an exploded fuse.

If you're able to open up a sealed non-remote key fob and are able to bear the mess, you can take off the circuit board and examine the fuse using a multimeter for proper diode function. If you're not comfortable with this, you can visit your local Oreilly or hardware store and utilize their RF frequency tester. This will let you know whether the key fob is sending a signal.

Programming

Key fobs aren't indestructible and are susceptible to damage through a variety of causes. They can break their connection with the receiver in your vehicle due to shocks or low battery, which calls for reprogramming. A professional auto locksmith or a main dealer can reprogram your key fob and get it back up and running. If resetting or fixing the keyfob is not working it is possible to replace it.