There's Enough 15 Things About Remote Key Repair We're Fed Up Of Hearing

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 with a few simple steps. First, ensure that it's not your backup remote.

If your backup remote can lock and unlock the doors of your car, it is likely that the main remote is not working. Most problems with car remote keys result from circuitry or battery problems.

Battery

The battery inside the key fob may be worn out over time. It is quite simple to replace batteries, but it is essential to make sure that you use the right type that you can refer to your owner's manual, or contact the dealer for the manufacturer to find out the kind of battery you require. It is also a good idea to examine the battery compartment thoroughly since dead batteries may release caustic chemicals that could damage the remote. If replacing the battery does not fix the problem there could be other issues that require attention from a professional. For instance, if the buttons seem stuck or damaged, it may be necessary to disassemble the remote and rework its components. You can also try reprogramming your vehicle to recognize the new key fob.

Buttons

Key fobs can get dirty and worn-out from repeated use. This is not unusual, but it can cause buttons to cease working or require a very difficult press to get them to work. This can be a hassle especially when you're away from your home and need to switch on your car. Even malfunctioning or worn-out buttons can be fixed with a bit of time and tools you already have at home.

First, verify that the batteries have been correctly inserted and that the indentation on the back of the button is filled. Take the remote apart and inspect the circuit board. Examine for evidence of rust, or other indications that the buttons are worn or damaged. For instance there could be conductive paint missing. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has become damaged or where conductive paint is missing. Do not rub too vigorously, as this could erode the conductive paint, and block the button from firing when you press it.

Also, carefully check the battery connector's terminals to ensure any loose solder connections. Soldering them back into place can restore the button's functionality if this is the situation. The same procedure 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 to be pressed very hard the graphite disks at the back of the button may have worn out and need to replaced. It is usually done by rubbing a pen across the disks. This should bring the button back to life.


If repair broken car key of this doesn't help or if the button does not respond to a firm press It could be that the circuit board is damaged. It is possible to fix this issue by cleaning and re-soldering your fob but you should also have another spare in case it does not work.

Circuitry

If the key fob buttons function the circuit board that is inside your remote may be dirty. A thorough examination is usually enough to fix this problem. The most common causes for dirty circuit boards is water and damaged cases. A broken case allows water and other debris to pass through and short circuit the electronics. Water can also destroy pins and connectors that are small on the board called via's.

If you're able to open your key fob, and aren't afraid of making some mess, we can take the buttons out of their sockets and solder in new ones. It's also worth examining the battery terminal connections. If they are loose, the buttons could not function properly or become stuck in their down position. Soldering the terminals and buttons to their original positions is often enough to return a malfunctioning fob back to working.

Non-Remote transponder chips

Sealed non-remote transponder chips are more durable than remote fobs that have them however they are still susceptible to being cracked by a hole drilled into them or run over by a lawnmower or car door handle. Most of the time non-remote transponder chip malfunctions could be attributed to blowing fuses.

If you're able to open up a key fob that is sealed and can tolerate the mess, you can take off the circuit board and test the fuse with an instrument to verify diode function. If you're not confident doing this, head to your local hardware store or Oreilly's, and they'll usually have an RFID frequency tester that can let you know if the key fob is sending signals.

Programming

Key fobs endure lots of abuse and aren't impervious to damage. They can break their connection with the receiver inside your vehicle due to shocks or a low-battery, which requires reprogramming. A professional auto locksmith or a main dealer will be able to reprogram your key fob and get it working again. If resetting or repairing the keyfob is not working, you may need to replace it.

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Pub: 18 Jun 2024 01:54 UTC
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