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How to Fix a Key Fob That isn't Working

If your key fob isn't functioning There are a few simple steps that can fix it. First, check to make sure it's not your backup remote.

If your backup remote can lock and unlock the doors of your car, then it is likely that the main remote isn't working. Most problems with emergency car key repair remote keys are caused by battery or circuitry problems.

Battery

The battery inside the key fob could wear out over time. It is relatively easy to change out the battery, however it is important to ensure you choose the correct type that you can refer to the owner's manual or talk to the dealer of the manufacturer to find out what kind of battery you require. It is recommended to inspect the battery compartment with care, as dead batteries sometimes leak harmful chemicals that can damage the remote. If replacing the battery does not fix the issue there could be other issues that require professional attention. If buttons are broken or stuck, for example, it may be necessary take the remote apart and rework each component. You could also try reprogramming your vehicle to recognize the new key fob.

Buttons

Key fobs can get filthy and worn out due to frequent use. It is not uncommon for buttons to stop working, or to require a long press to make them work. This can be a hassle, especially when you are away from your home and you need to switch on your car. Even broken or damaged buttons can be fixed with a little effort and tools you already have at home.

First, make sure that the batteries are correctly installed and that the indentation on the back of the button is filled. Take the remote apart and inspect the circuit board. Check for signs of corrosion or other indications that buttons are worn out or damaged, like missing the conductive paint. Use the Q-tip, dipped in rubbing alcohol, gently clean any membrane contacts that have become damaged or have conductive paint missing. Do not rub too vigorously, as this could erode the conductive paint and prevent the button from firing when you press it.

Also, make sure to inspect the battery connector's terminals to ensure an unattached solder connection. Soldering them back in place can restore the button's functionality in the event that this is the case. You can follow the same method to restore functionality to any other loose connection in the fob.

If any of the rubber buttons on the front of the keyfob aren't working or need to be pressed very hard the graphite disks at the back of the button could have worn out and will need to replaced. This can usually be done by rubbing a pencil on the disks, which should bring the button back to life.

If all of this doesn't help or if the button still does not respond to a firm press It could be that the circuit board itself is damaged. It is possible to fix this by a quick clean and refitting, but it's best to have an extra fob available in the event this method doesn't work for you.

Circuitry

Whether or not the keys fob buttons are functioning the circuit board in your remote might be dirty. A very thorough inspection is often enough to resolve this problem. The most common causes of dirty circuit boards are water and damaged cases. A damaged case can allow water and other debris to get into the circuit board, causing it to short. Water can also destroy pins and small connectors on the board, which are known as via's.

If you are handy enough to open your key fob, and you don't mind making a mess, we can take the buttons out of their sockets and put in new ones. Also, you should check the connections between battery terminals. If they're loose, the buttons may not work or even become stuck in their down position. Soldering the terminals, and putting the button back into place is typically all that's required to return keys repair that are not in working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are much more durable than remote fobs that contain them however they are still susceptible to being cracked by a hole made in them or pushed over by a lawnmowers blade or car door handle. The majority of non-remote transponder chip failures could be attributed to an exploded fuse.

If you are not comfortable opening the key fob, you can remove the circuitboard and use a multimeter to check that the diode is operating correctly. If you're not confident doing this, go to your local hardware store or Oreilly's, and they'll usually have an radio frequency tester that can let you know whether the key repairs near me fob is sending signals.

Programming

Key fobs aren't impervious to destruction and can be damaged by a variety of factors. They can lose their pairing to the receiver in your car because of shock or a low battery, which requires the reprogramming. A professional auto locksmith or main dealer can reprogram the keyfob to get it up and running again. If resetting or repairing the keyfob is not working it may be necessary to replace it.