How to Fix a Key Fob That isn't Working

If your key fob doesn't work There are a few simple steps that can fix it. The first step is to be sure that it's not the backup remote.

If your backup remote cannot unlock and lock the doors of your car key repair company, it is likely that the main remote is not working. The majority of car remote key malfunctions result from circuitry or battery problems.

Battery

It is not uncommon for the battery inside a key car repair fob for cars to get worn out. It is easy to replace a battery. However, it is important that you choose the right type. You can consult the owner's manual or contact the manufacturer to determine the correct type. It is also essential to check the battery compartment, since dead batteries can leak caustic chemicals which can damage the remote. If replacing the batteries doesn't solve the issue, it may be that there are other issues that require attention from a professional. For instance, if the buttons seem stuck or broken It may be necessary to disassemble the remote and rework its parts. You can also try reprogramming the vehicle to recognize the new fob.

Buttons

Key fobs can get dirty and worn out from frequent use. It is not unusual for buttons to cease working, or to require a hard press to make them work. This can be a hassle, especially when you are away from home and need to switch on your car. Fortunately, even worn out or broken buttons can usually be fixed with just a bit of time and a few items you have in the house.

First, make sure that the batteries are properly inserted and that the indentation at the back of the button has been filled. Then, open the remote with care and inspect the circuit board. Examine for signs of rust or other indications that the buttons are worn or damaged, like missing the conductive paint. Use a Q-tip that has been dipped in alcohol to gently clean any membrane contact that has worn-out or where conductive paint is missing. Do not rub too vigorously as this can damage the conductive paint, and block the button from firing when you press it.

Also, be sure to check the battery connector's terminals to ensure a loose solder connection. Soldering them back into place will restore the button's functionality if this is the case. The same process can be used to restore function to any loose connections in the fob.

If any of the rubber buttons at the front of the keyfob isn't functioning or require to be pressed very hard, the graphite disks at the back of the button may have worn out and will require replacement. You can usually do this by rubbing a pen across the disks. This should bring the button to life.

If all of this doesn't help or if the button still doesn't respond to a firm press It could be because the circuit board itself has become damaged. It is possible to fix the issue by cleaning and re-soldering the fob but you should also have a spare in case it doesn't work.

Circuitry

The circuit board in your remote control may be dirty, regardless of whether the buttons on the key fob are working or not. A very thorough inspection is often enough to resolve this issue. The most common causes of dirty circuit boards is water and broken cases. A broken case allows water and other debris to pass through and short out the electronic components. Water can also destroy pins and connectors that are small on the board, referred to as via's.

If you're handy enough to open your key fob and aren't 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. If they are loose, the buttons could not function properly or become stuck in their down position. Soldering the terminals, and putting the button back in their place is generally all it takes to restore the key fob that is not working to working condition.

Non-Remote transponder chips

Sealed non-remote transponder chip are more durable than remote fobs that have them however they are still susceptible to being broken by a hole being drilled into them or run over by a lawnmowers or car door handle. The failure of the fuse is usually to blame for non-remote chips failures.

If you're not confident opening the key fob, you can take the circuit board off and use a multimeter to verify that the diode is operating correctly. If you don't feel comfortable with this, go to your local Oreilly or hardware store and utilize their RF frequency tester. This will let you know whether the key fob transmits a signal.

Programming

Key fobs are subject to lots of abuse and aren't impervious to damage. They can lose their pairing to the receiver in your car due to shock or a low battery, requiring the reprogramming. A professional auto locksmith, or a dealer in the main, can reprogram your key fob and get it back functioning again. If resetting or fixing your keyfob does not work, you may need to replace it.